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-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
section 4.4
(Type is String)
-
coordinates:
latitude longitude
(Type is String)
-
origname:
delta_time
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/delta_time
(Type is String)
gt3r_residual_histogram_delta_time[
/gt3r_residual_histogram_delta_time=
0..5838]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Elapsed GPS seconds
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
section 4.4
(Type is String)
-
coordinates:
lat_mean lon_mean
(Type is String)
-
origname:
delta_time
(Type is String)
-
fullnamepath:
/gt3r/residual_histogram/delta_time
(Type is String)
gt3r_residual_histogram_dh[
/gt3r_residual_histogram_dh=
0..999]
(Type is Float32)
-
attributes
-
units:
meters
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Height Differences
(Type is String)
-
description:
Height differences between vertical bin centers and the segment height (heights for the histogram)
(Type is String)
-
source:
Section 4.11
(Type is String)
-
coordinates:
delta_time lat_mean lon_mean
(Type is String)
-
origname:
dh
(Type is String)
-
fullnamepath:
/gt3r/residual_histogram/dh
(Type is String)
gt3r_residual_histogram_ds_segment_id[
/gt3r_residual_histogram_ds_segment_id=
0..9]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Segment ID Index
(Type is String)
-
description:
Relative index of each segment_id used in the derivation of the histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
1
(Type is Int8)
-
valid_max:
10
(Type is Int8)
-
origname:
ds_segment_id
(Type is String)
-
fullnamepath:
/gt3r/residual_histogram/ds_segment_id
(Type is String)
gt3r_segment_quality_delta_time[
/gt3r_segment_quality_delta_time=
0..62757]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Elapsed GPS seconds
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Number of GPS seconds since the ATLAS SDP epoch. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
ATL03
(Type is String)
-
coordinates:
reference_pt_lat reference_pt_lon
(Type is String)
-
origname:
delta_time
(Type is String)
-
fullnamepath:
/gt3r/segment_quality/delta_time
(Type is String)
orbit_info_crossing_time[
/orbit_info_crossing_time=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Ascending Node Crossing Time
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
The time, in seconds since the ATLAS SDP GPS Epoch, at which the ascending node crosses the equator. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
POD/PPD
(Type is String)
-
origname:
crossing_time
(Type is String)
-
fullnamepath:
/orbit_info/crossing_time
(Type is String)
orbit_info_sc_orient_time[
/orbit_info_sc_orient_time=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Time of Last Spacecraft Orientation Change
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
The time of the last spacecraft orientation change between forward, backward and transitional flight modes, expressed in seconds since the ATLAS SDP GPS Epoch. ICESat-2 is considered to be flying forward when the weak beams are leading the strong beams; and backward when the strong beams are leading the weak beams. ICESat-2 is considered to be in transition while it is maneuvering between the two orientations. Science quality is potentially degraded while in transition mode. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
POD/PPD
(Type is String)
-
origname:
sc_orient_time
(Type is String)
-
fullnamepath:
/orbit_info/sc_orient_time
(Type is String)
quality_assessment_gt1l_delta_time[
/quality_assessment_gt1l_delta_time=
0..125]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Elapsed GPS seconds
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Mean number of GPS seconds since the ATLAS SDP epoch for the 10km segment. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
ATL03
(Type is String)
-
coordinates:
lat_mean lon_mean
(Type is String)
-
origname:
delta_time
(Type is String)
-
fullnamepath:
/quality_assessment/gt1l/delta_time
(Type is String)
quality_assessment_gt1r_delta_time[
/quality_assessment_gt1r_delta_time=
0..125]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Elapsed GPS seconds
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Mean number of GPS seconds since the ATLAS SDP epoch for the 10km segment. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
ATL03
(Type is String)
-
coordinates:
lat_mean lon_mean
(Type is String)
-
origname:
delta_time
(Type is String)
-
fullnamepath:
/quality_assessment/gt1r/delta_time
(Type is String)
quality_assessment_gt2l_delta_time[
/quality_assessment_gt2l_delta_time=
0..125]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Elapsed GPS seconds
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Mean number of GPS seconds since the ATLAS SDP epoch for the 10km segment. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
ATL03
(Type is String)
-
coordinates:
lat_mean lon_mean
(Type is String)
-
origname:
delta_time
(Type is String)
-
fullnamepath:
/quality_assessment/gt2l/delta_time
(Type is String)
quality_assessment_gt2r_delta_time[
/quality_assessment_gt2r_delta_time=
0..125]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Elapsed GPS seconds
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Mean number of GPS seconds since the ATLAS SDP epoch for the 10km segment. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
ATL03
(Type is String)
-
coordinates:
lat_mean lon_mean
(Type is String)
-
origname:
delta_time
(Type is String)
-
fullnamepath:
/quality_assessment/gt2r/delta_time
(Type is String)
quality_assessment_gt3l_delta_time[
/quality_assessment_gt3l_delta_time=
0..125]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Elapsed GPS seconds
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Mean number of GPS seconds since the ATLAS SDP epoch for the 10km segment. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
ATL03
(Type is String)
-
coordinates:
lat_mean lon_mean
(Type is String)
-
origname:
delta_time
(Type is String)
-
fullnamepath:
/quality_assessment/gt3l/delta_time
(Type is String)
quality_assessment_gt3r_delta_time[
/quality_assessment_gt3r_delta_time=
0..125]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Elapsed GPS seconds
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Mean number of GPS seconds since the ATLAS SDP epoch for the 10km segment. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
ATL03
(Type is String)
-
coordinates:
lat_mean lon_mean
(Type is String)
-
origname:
delta_time
(Type is String)
-
fullnamepath:
/quality_assessment/gt3r/delta_time
(Type is String)
FakeDim0[
/FakeDim0=
0..0]
(Type is Int32)
FakeDim1[
/FakeDim1=
0..1]
(Type is Int32)
orbit_info_cycle_number[
/orbit_info_crossing_time=
0..0]
(Type is Int8)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Cycle Number
(Type is String)
-
description:
Tracks the number of 91-day cycles in the mission, beginning with 01. A unique orbit number can be determined by subtracting 1 from the cycle_number, multiplying by 1387 and adding the rgt value.
(Type is String)
-
source:
POD/PPD
(Type is String)
-
valid_min:
0
(Type is Int8)
-
valid_max:
50
(Type is Int8)
-
origname:
cycle_number
(Type is String)
-
fullnamepath:
/orbit_info/cycle_number
(Type is String)
-
coordinates:
orbit_info_crossing_time
(Type is String)
orbit_info_orbit_number[
/orbit_info_crossing_time=
0..0]
(Type is UInt16)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Orbit Number
(Type is String)
-
description:
Unique identifying number for each planned ICESat-2 orbit.
(Type is String)
-
source:
Operations
(Type is String)
-
valid_min:
1
(Type is UInt16)
-
valid_max:
65000
(Type is UInt16)
-
origname:
orbit_number
(Type is String)
-
fullnamepath:
/orbit_info/orbit_number
(Type is String)
-
coordinates:
orbit_info_crossing_time
(Type is String)
orbit_info_lan[
/orbit_info_crossing_time=
0..0]
(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Ascending Node Longitude
(Type is String)
-
description:
Longitude at the ascending node crossing.
(Type is String)
-
source:
POD/PPD
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
lan
(Type is String)
-
fullnamepath:
/orbit_info/lan
(Type is String)
-
coordinates:
orbit_info_crossing_time
(Type is String)
orbit_info_sc_orient[
/orbit_info_sc_orient_time=
0..0]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Spacecraft Orientation
(Type is String)
-
description:
This parameter tracks the spacecraft orientation between forward, backward and transitional flight modes. ICESat-2 is considered to be flying forward when the weak beams are leading the strong beams; and backward when the strong beams are leading the weak beams. ICESat-2 is considered to be in transition while it is maneuvering between the two orientations. Science quality is potentially degraded while in transition mode.
(Type is String)
-
source:
POD/PPD
(Type is String)
-
flag_meanings:
backward forward transition
(Type is String)
-
flag_values:
0, 1, 2
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
2
(Type is Int8)
-
origname:
sc_orient
(Type is String)
-
fullnamepath:
/orbit_info/sc_orient
(Type is String)
-
coordinates:
orbit_info_sc_orient_time
(Type is String)
orbit_info_rgt[
/orbit_info_crossing_time=
0..0]
(Type is Int16)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Ground track
(Type is String)
-
description:
The reference ground track (RGT) is the track on the earth at which a specified unit vector within the observatory is pointed. Under nominal operating conditions, there will be no data collected along the RGT, as the RGT is spanned by GT2L and GT2R. During slews or off-pointing, it is possible that ground tracks may intersect the RGT. The ICESat-2 mission has 1387 RGTs.
(Type is String)
-
source:
POD/PPD
(Type is String)
-
valid_min:
1
(Type is Int16)
-
valid_max:
1387
(Type is Int16)
-
origname:
rgt
(Type is String)
-
fullnamepath:
/orbit_info/rgt
(Type is String)
-
coordinates:
orbit_info_crossing_time
(Type is String)
gt1r_land_ice_segments_sigma_geo_h[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Vertical Geolocation Error
(Type is String)
-
description:
Total vertical geolocation error due to PPD and POD, including the effects of horizontal geolocation error on the segment vertical error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
origname:
sigma_geo_h
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/sigma_geo_h
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_h_li_sigma[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Expected RMS segment misfit
(Type is String)
-
description:
Propagated error due to sampling error and FPB correction from the land ice algorithm
(Type is String)
-
source:
section 4.4
(Type is String)
-
origname:
h_li_sigma
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/h_li_sigma
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_fit_statistics_h_mean[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Height Mean
(Type is String)
-
description:
Mean surface height, not corrected for first-photon bias or pulse truncation.
(Type is String)
-
source:
ATL06 ATBD
(Type is String)
-
origname:
h_mean
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/fit_statistics/h_mean
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_fit_statistics_signal_selection_source[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/fit_statistics/signal_selection_source
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_fit_statistics_snr[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
SNR
(Type is String)
-
description:
Signal-to-noise ratio in the final refined window
(Type is String)
-
source:
section 3.6.2
(Type is String)
-
origname:
snr
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/fit_statistics/snr
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_fit_statistics_h_robust_sprd[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Robust Spread
(Type is String)
-
description:
RDE of misfit between PE heights and the along-track segment fit.
(Type is String)
-
source:
section 3.6.3
(Type is String)
-
origname:
h_robust_sprd
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/fit_statistics/h_robust_sprd
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_fit_statistics_n_seg_pulses[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Int32)
-
attributes
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Number potential segment pulses
(Type is String)
-
description:
The number of pulses potentially included in the segment
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-
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Propagated error in the along-track segment slope
(Type is String)
-
source:
section 3.6.4
(Type is String)
-
origname:
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long_name:
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Probability that signal-finding routine would converge to at least the observed SNR for a random-noise input. Small values indicate a small likelihood of a surface-detection blunder.
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-
source:
section 3.6.2
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Expected RMS misfit between PE heights and along-track segment fit
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source:
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Across track slope from segment fits to weak and strong beam; the same slope is reported for both laser beams in each pair
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-
source:
section 3.7
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Propagated height error due to PE-height sampling error for height from the along-track fit, not including geolocation-induced error
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-
source:
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(Type is String)
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origname:
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source:
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(Type is String)
-
source:
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(Type is String)
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Along-track slope from along-track segment fit
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source:
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Number of PEs used in determining h_li, after editing
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source:
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(Type is String)
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Surface Window Width
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Width of the surface window, top to bottom
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-
source:
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(Type is String)
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Longitude of segment center, , WGS84, East=+
(Type is String)
-
source:
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(Type is String)
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(Type is Float64)
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Latitude of segment center, WGS84, North=+,
(Type is String)
-
source:
section 3.10
(Type is String)
-
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Standard land-ice segment height determined by land ice algorithm, corrected for first-photon bias, representing the median- based height of the selected PEs
(Type is String)
-
source:
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(Type is String)
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-
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The direction, eastwards from north, of the laser beam vector as seen by an observer at the laser ground spot viewing toward the spacecraft (i.e., the vector from the ground to the spacecraft).
(Type is String)
-
source:
ATL03g, Section 3.3
(Type is String)
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Azimuth of the pair-track, east of local north.
(Type is String)
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source:
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(Type is String)
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Along-track component of the geolocation error.
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Across-track component of the geolocation error.
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Coelevation (CE) is direction from vertical of the laser beam as seen by an observer located at the laser ground spot.
(Type is String)
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(Type is String)
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The along-track x-coordinate of the segment, measured parallel to the RGT, measured from the ascending node of the equatorial crossing of a given RGT.
(Type is String)
-
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(Type is String)
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-
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Along-track y coordinate of the segment, relative to the RGT, measured along the perpendicular to the RGT, positive to the right of the RGT.
(Type is String)
-
source:
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(Type is String)
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-
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Height of the DEM, interpolated by cubic-spline interpolation in the DEM coordinate system to the PE location.
(Type is String)
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(Type is String)
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(Type is String)
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Geoid Height
(Type is String)
-
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Geoid height above WGS-84 reference ellipsoid (range -107 to 86m),
(Type is String)
-
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EGM2008
(Type is String)
-
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(Type is String)
-
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-
description:
Combined flag indicating the risks of severe multiple scattering. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight.
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5
(Type is String)
-
flag_values:
-1, 0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
-1
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
origname:
msw_flag
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/msw_flag
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_bsnow_conf[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow confidence
(Type is String)
-
description:
Confidence flag for presence of blowing snow
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_conf
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/bsnow_conf
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_bsnow_h[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow Layer Top Height
(Type is String)
-
description:
Blowing snow layer top height
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_h
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/bsnow_h
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_tide_ocean[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Ocean Tide
(Type is String)
-
description:
Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.1
(Type is String)
-
origname:
tide_ocean
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/tide_ocean
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_tide_earth[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Earth Tide
(Type is String)
-
description:
Solid Earth Tides
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.3
(Type is String)
-
origname:
tide_earth
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/tide_earth
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_solar_azimuth[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar azimuth
(Type is String)
-
description:
The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
(Type is String)
-
source:
ATL03
(Type is String)
-
origname:
solar_azimuth
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/solar_azimuth
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_r_eff[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Effective uncorrected reflectance
(Type is String)
-
description:
Effective reflectance, uncorrected for atmospheric effects.
(Type is String)
-
source:
section 3.1.5.4
(Type is String)
-
origname:
r_eff
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/r_eff
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_dac[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Dynamic Atmosphere Correction
(Type is String)
-
description:
Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect.
(Type is String)
-
source:
ATL03, 6.3.2
(Type is String)
-
origname:
dac
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/dac
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_tide_load[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Load Tide
(Type is String)
-
description:
Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.4
(Type is String)
-
origname:
tide_load
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/tide_load
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_bsnow_od[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Blowing snow OD
(Type is String)
-
description:
Optical thickness of blowing snow layer.
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_od
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/bsnow_od
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_cloud_flg_atm[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Cloud flag
(Type is String)
-
description:
Indicates the probability of clouds based on backscatter measurements
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
no yes
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
cloud_flg_atm
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/cloud_flg_atm
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_solar_elevation[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar elevation
(Type is String)
-
description:
Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low-precision value, with approximately TBD degree accuracy.
(Type is String)
-
source:
ATL03
(Type is String)
-
valid_min:
-90.00000000
(Type is Float32)
-
valid_max:
90.00000000
(Type is Float32)
-
origname:
solar_elevation
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/solar_elevation
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_tide_pole[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Solid Earth Pole Tide
(Type is String)
-
description:
Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.5
(Type is String)
-
origname:
tide_pole
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/tide_pole
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_e_bckgrd[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Expected background count rate
(Type is String)
-
description:
Expected background count rate based on sun angle, surface slope, for unit surface reflectance
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
e_bckgrd
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/e_bckgrd
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_cloud_flg_asr[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
cloud flag confidence
(Type is String)
-
description:
Indicates cloud attenuation as calculated from the apparent surface reflectance, assuming a white snow surface
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence
(Type is String)
-
flag_values:
0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
origname:
cloud_flg_asr
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/cloud_flg_asr
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_bckgrd[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Background count rate
(Type is String)
-
description:
Background count rate, derived from the ATL03 50-shot-average, interpolated to the segment center.
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
bckgrd
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/bckgrd
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_geophysical_neutat_delay_total[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Total Neutral Atmospheric Delay
(Type is String)
-
description:
Total neutral atmosphere delay correction (wet+dry).
(Type is String)
-
source:
ATL03a ATBD
(Type is String)
-
origname:
neutat_delay_total
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/geophysical/neutat_delay_total
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_atl06_quality_summary[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
ATL06_Quality_Summary
(Type is String)
-
description:
The ATL06_quality_summary parameter indicates the best-quality subset of all ATL06 data. A zero in this parameter implies that no data-quality tests have found a problem with the segment, a one implies that some potential problem has been found. Users who select only segments with zero values for this flag can be relatively certain of obtaining high-quality data, but will likely miss a significant fraction of usable data, particularly in cloudy, rough, or low-surface-reflectance conditions.
(Type is String)
-
source:
section 4.3
(Type is String)
-
flag_meanings:
best_quality potential_problem
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
atl06_quality_summary
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/atl06_quality_summary
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_segment_id[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Int32)
-
attributes
-
_FillValue:
0
(Type is Int32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number, counting from the equator. Equal to the segment_id for the second of the two 20m ATL03 segments included in the 40m ATL06 segment
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/segment_id
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_bias_correction_fpb_mean_corr[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
first photon bias mean correction
(Type is String)
-
description:
Estimated first-photon bias (fpb) correction to mean segment height
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/bias_correction/fpb_mean_corr
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_bias_correction_fpb_mean_corr_sigma[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb mean corr sigma
(Type is String)
-
description:
Estimated error in fpb_mean_corr
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr_sigma
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/bias_correction/fpb_mean_corr_sigma
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_bias_correction_fpb_med_corr[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr
(Type is String)
-
description:
First-photon-bias correction giving the difference between the mean segment height and the corrected median height
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/bias_correction/fpb_med_corr
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_bias_correction_fpb_med_corr_sigma[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr sigma
(Type is String)
-
description:
Estimated error in fpb_med_corr
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr_sigma
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/bias_correction/fpb_med_corr_sigma
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_bias_correction_fpb_n_corr[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
counts
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb number photons corr
(Type is String)
-
description:
Estimated window photon count after first-photon-bias correction
(Type is String)
-
source:
section 4.3.3.3
(Type is String)
-
origname:
fpb_n_corr
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/bias_correction/fpb_n_corr
(Type is String)
-
coordinates:
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(Type is String)
gt1r_land_ice_segments_bias_correction_tx_mean_corr[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape mean correction
(Type is String)
-
description:
Estimate of the difference between the mean of the full-waveform transmit-pulse and the mean of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_mean_corr
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/bias_correction/tx_mean_corr
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_bias_correction_med_r_fit[
/gt1r_land_ice_segments_delta_time=
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(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
mean median residual
(Type is String)
-
description:
Difference between uncorrected mean and median of linear fit residuals
(Type is String)
-
source:
section 3.3.5
(Type is String)
-
origname:
med_r_fit
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/bias_correction/med_r_fit
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_land_ice_segments_bias_correction_tx_med_corr[
/gt1r_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape median correction
(Type is String)
-
description:
Estimate of the difference between the median of the full-waveform transmit-pulse mean and the median of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_med_corr
(Type is String)
-
fullnamepath:
/gt1r/land_ice_segments/bias_correction/tx_med_corr
(Type is String)
-
coordinates:
gt1r_land_ice_segments_delta_time gt1r_land_ice_segments_latitude gt1r_land_ice_segments_longitude
(Type is String)
gt1r_residual_histogram_count[
/gt1r_residual_histogram_delta_time=
0..5861]
[
/gt1r_residual_histogram_dh=
0..999]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Bin Counts
(Type is String)
-
description:
Residual count in 1-cm bins, for PE within 10 (horizontal) m of segment centers for each histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
count
(Type is String)
-
fullnamepath:
/gt1r/residual_histogram/count
(Type is String)
-
coordinates:
gt1r_residual_histogram_delta_time gt1r_residual_histogram_lat_mean gt1r_residual_histogram_lon_mean
(Type is String)
gt1r_residual_histogram_lat_mean[
/gt1r_residual_histogram_delta_time=
0..5861]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Latitude Mean
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Mean latitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
origname:
lat_mean
(Type is String)
-
fullnamepath:
/gt1r/residual_histogram/lat_mean
(Type is String)
-
coordinates:
gt1r_residual_histogram_delta_time gt1r_residual_histogram_lon_mean
(Type is String)
gt1r_residual_histogram_bckgrd_per_bin[
/gt1r_residual_histogram_delta_time=
0..5861]
(Type is Float32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Expected background PEs
(Type is String)
-
description:
Number of background PE expected for the bins in each column of the histogram based on the observed background rate (bckgrd).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
bckgrd_per_bin
(Type is String)
-
fullnamepath:
/gt1r/residual_histogram/bckgrd_per_bin
(Type is String)
-
coordinates:
gt1r_residual_histogram_delta_time gt1r_residual_histogram_lat_mean gt1r_residual_histogram_lon_mean
(Type is String)
gt1r_residual_histogram_x_atc_mean[
/gt1r_residual_histogram_delta_time=
0..5861]
(Type is Float64)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Along Track Coordinate Mean
(Type is String)
-
description:
Mean along-track coordinate of the segments included in the histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
x_atc_mean
(Type is String)
-
fullnamepath:
/gt1r/residual_histogram/x_atc_mean
(Type is String)
-
coordinates:
gt1r_residual_histogram_delta_time gt1r_residual_histogram_lat_mean gt1r_residual_histogram_lon_mean
(Type is String)
gt1r_residual_histogram_segment_id_list[
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0..5861]
[
/gt1r_residual_histogram_ds_segment_id=
0..9]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Segment ID List
(Type is String)
-
description:
Segments ids included in each column of the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
_FillValue:
2147483647
(Type is Int32)
-
origname:
segment_id_list
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt1r_residual_histogram_pulse_count[
/gt1r_residual_histogram_delta_time=
0..5861]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Number of Histogram Segment Pulses
(Type is String)
-
description:
Number of pulses potentially included in the histogram (pulses are counted if they are in the central 20 m of each segment, even if no PE from the pulse are selected).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
pulse_count
(Type is String)
-
fullnamepath:
/gt1r/residual_histogram/pulse_count
(Type is String)
-
coordinates:
gt1r_residual_histogram_delta_time gt1r_residual_histogram_lat_mean gt1r_residual_histogram_lon_mean
(Type is String)
gt1r_residual_histogram_lon_mean[
/gt1r_residual_histogram_delta_time=
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(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude Mean
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Mean longitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
lon_mean
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
gt1r_residual_histogram_delta_time gt1r_residual_histogram_lat_mean
(Type is String)
gt1r_segment_quality_record_number[
/gt1r_segment_quality_delta_time=
0..62800]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
long_name:
Land Ice Height Index
(Type is String)
-
description:
For those segments that have adequate signal strength, this parameter gives the record for the pair within the other groups in the granule.
(Type is String)
-
source:
section 4.2
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
origname:
record_number
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt1r_segment_quality_reference_pt_lat[
/gt1r_segment_quality_delta_time=
0..62800]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
long_name:
Latitude
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Latitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
contentType:
referenceInformation
(Type is String)
-
origname:
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(Type is String)
-
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(Type is String)
-
coordinates:
gt1r_segment_quality_delta_time gt1r_segment_quality_reference_pt_lon
(Type is String)
gt1r_segment_quality_reference_pt_lon[
/gt1r_segment_quality_delta_time=
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(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Longitude
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Longitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
reference_pt_lon
(Type is String)
-
fullnamepath:
/gt1r/segment_quality/reference_pt_lon
(Type is String)
-
coordinates:
gt1r_segment_quality_delta_time gt1r_segment_quality_reference_pt_lat
(Type is String)
gt1r_segment_quality_segment_id[
/gt1r_segment_quality_delta_time=
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(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number corresponding to the second of two ATL03 segments in the ATL06 segment, counted from the RGT equator crossing
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt1r/segment_quality/segment_id
(Type is String)
-
coordinates:
gt1r_segment_quality_delta_time gt1r_segment_quality_reference_pt_lat gt1r_segment_quality_reference_pt_lon
(Type is String)
gt1r_segment_quality_signal_selection_source[
/gt1r_segment_quality_delta_time=
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(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
fullnamepath:
/gt1r/segment_quality/signal_selection_source
(Type is String)
-
coordinates:
gt1r_segment_quality_delta_time gt1r_segment_quality_reference_pt_lat gt1r_segment_quality_reference_pt_lon
(Type is String)
gt1r_segment_quality_signal_selection_status_signal_selection_status_all[
/gt1r_segment_quality_delta_time=
0..62800]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Status Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using all ATL03-flagged PEs. 0=Signal selection succeeded using all ATL03-flagged PEs (or algorthm not attempted); 1=Signal selection using all ATL03-flagged PEs failed the 20-meter-spread test; 2=Signal selection using all ATL03-flagged PEs failed the 10-photon-count test; 3=Signal selection using all ATL03-flagged PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_all
(Type is String)
-
fullnamepath:
/gt1r/segment_quality/signal_selection_status/signal_selection_status_all
(Type is String)
-
coordinates:
gt1r_segment_quality_delta_time gt1r_segment_quality_reference_pt_lat gt1r_segment_quality_reference_pt_lon
(Type is String)
gt1r_segment_quality_signal_selection_status_signal_selection_status_backup[
/gt1r_segment_quality_delta_time=
0..62800]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Backup Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using the backup signal finder. 0=Signal selection succeeded using the backup signal finder after centering the window on flagged PE (or backup signal finder not attempted); 1=Signal selection succeeded using the backup signal finder after searching for the strongest-signal window using four adjacent ATL03 segments; 2=Signal selection using the backup signal finder failed the 20-meter spread test; 3=Signal selection using the backup signal finder failed the 10-photon count test; 4=Signal selection using the backup signal finder failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_widen failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3, 4
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
4
(Type is Int8)
-
origname:
signal_selection_status_backup
(Type is String)
-
fullnamepath:
/gt1r/segment_quality/signal_selection_status/signal_selection_status_backup
(Type is String)
-
coordinates:
gt1r_segment_quality_delta_time gt1r_segment_quality_reference_pt_lat gt1r_segment_quality_reference_pt_lon
(Type is String)
gt1r_segment_quality_signal_selection_status_signal_selection_status_confident[
/gt1r_segment_quality_delta_time=
0..62800]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Confident Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using low or better PEs. 0=Signal selection succeeded using ATL03 low-or-better confidence PEs; 1=Signal selection using ATL03 low-or-better confidence PEs failed the 20-meter-spread test; 2=Signal selection using ATL03 low-or-better confidence PEs failed the 10-photon-count test; 3=Signal selection using ATL03 low-or-better confidence PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_confident
(Type is String)
-
fullnamepath:
/gt1r/segment_quality/signal_selection_status/signal_selection_status_confident
(Type is String)
-
coordinates:
gt1r_segment_quality_delta_time gt1r_segment_quality_reference_pt_lat gt1r_segment_quality_reference_pt_lon
(Type is String)
gt2r_land_ice_segments_sigma_geo_h[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Vertical Geolocation Error
(Type is String)
-
description:
Total vertical geolocation error due to PPD and POD, including the effects of horizontal geolocation error on the segment vertical error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
origname:
sigma_geo_h
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/sigma_geo_h
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_h_li_sigma[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Expected RMS segment misfit
(Type is String)
-
description:
Propagated error due to sampling error and FPB correction from the land ice algorithm
(Type is String)
-
source:
section 4.4
(Type is String)
-
origname:
h_li_sigma
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/h_li_sigma
(Type is String)
-
coordinates:
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(Type is String)
gt2r_land_ice_segments_fit_statistics_h_mean[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Height Mean
(Type is String)
-
description:
Mean surface height, not corrected for first-photon bias or pulse truncation.
(Type is String)
-
source:
ATL06 ATBD
(Type is String)
-
origname:
h_mean
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/fit_statistics/h_mean
(Type is String)
-
coordinates:
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(Type is String)
gt2r_land_ice_segments_fit_statistics_signal_selection_source[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/fit_statistics/signal_selection_source
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_fit_statistics_snr[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
SNR
(Type is String)
-
description:
Signal-to-noise ratio in the final refined window
(Type is String)
-
source:
section 3.6.2
(Type is String)
-
origname:
snr
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/fit_statistics/snr
(Type is String)
-
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RDE of misfit between PE heights and the along-track segment fit.
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source:
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Propagated error in the along-track segment slope
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-
source:
section 3.6.4
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-
origname:
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source:
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Expected RMS misfit between PE heights and along-track segment fit
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Across track slope from segment fits to weak and strong beam; the same slope is reported for both laser beams in each pair
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-
source:
section 3.7
(Type is String)
-
origname:
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Propagated height error due to PE-height sampling error for height from the along-track fit, not including geolocation-induced error
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source:
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Along-track slope from along-track segment fit
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source:
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Number of PEs used in determining h_li, after editing
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source:
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Width of the surface window, top to bottom
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Longitude of segment center, , WGS84, East=+
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Latitude of segment center, WGS84, North=+,
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Standard land-ice segment height determined by land ice algorithm, corrected for first-photon bias, representing the median- based height of the selected PEs
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The direction, eastwards from north, of the laser beam vector as seen by an observer at the laser ground spot viewing toward the spacecraft (i.e., the vector from the ground to the spacecraft).
(Type is String)
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source:
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Azimuth of the pair-track, east of local north.
(Type is String)
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Along-track component of the geolocation error.
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Across-track component of the geolocation error.
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The along-track x-coordinate of the segment, measured parallel to the RGT, measured from the ascending node of the equatorial crossing of a given RGT.
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-
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Along-track y coordinate of the segment, relative to the RGT, measured along the perpendicular to the RGT, positive to the right of the RGT.
(Type is String)
-
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(Type is String)
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Height of the DEM, interpolated by cubic-spline interpolation in the DEM coordinate system to the PE location.
(Type is String)
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-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Geoid Height
(Type is String)
-
description:
Geoid height above WGS-84 reference ellipsoid (range -107 to 86m),
(Type is String)
-
source:
EGM2008
(Type is String)
-
origname:
geoid_h
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/dem/geoid_h
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_msw_flag[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Multiple Scattering Warning Flag
(Type is String)
-
description:
Combined flag indicating the risks of severe multiple scattering. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight.
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5
(Type is String)
-
flag_values:
-1, 0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
-1
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
origname:
msw_flag
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/msw_flag
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_bsnow_conf[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow confidence
(Type is String)
-
description:
Confidence flag for presence of blowing snow
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_conf
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/bsnow_conf
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_bsnow_h[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow Layer Top Height
(Type is String)
-
description:
Blowing snow layer top height
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_h
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/bsnow_h
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_tide_ocean[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Ocean Tide
(Type is String)
-
description:
Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.1
(Type is String)
-
origname:
tide_ocean
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/tide_ocean
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_tide_earth[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Earth Tide
(Type is String)
-
description:
Solid Earth Tides
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.3
(Type is String)
-
origname:
tide_earth
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/tide_earth
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_solar_azimuth[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar azimuth
(Type is String)
-
description:
The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
(Type is String)
-
source:
ATL03
(Type is String)
-
origname:
solar_azimuth
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/solar_azimuth
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_r_eff[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Effective uncorrected reflectance
(Type is String)
-
description:
Effective reflectance, uncorrected for atmospheric effects.
(Type is String)
-
source:
section 3.1.5.4
(Type is String)
-
origname:
r_eff
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/r_eff
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_dac[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Dynamic Atmosphere Correction
(Type is String)
-
description:
Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect.
(Type is String)
-
source:
ATL03, 6.3.2
(Type is String)
-
origname:
dac
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/dac
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_tide_load[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Load Tide
(Type is String)
-
description:
Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.4
(Type is String)
-
origname:
tide_load
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/tide_load
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_bsnow_od[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Blowing snow OD
(Type is String)
-
description:
Optical thickness of blowing snow layer.
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_od
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/bsnow_od
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_cloud_flg_atm[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Cloud flag
(Type is String)
-
description:
Indicates the probability of clouds based on backscatter measurements
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
no yes
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
cloud_flg_atm
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/cloud_flg_atm
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_solar_elevation[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar elevation
(Type is String)
-
description:
Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low-precision value, with approximately TBD degree accuracy.
(Type is String)
-
source:
ATL03
(Type is String)
-
valid_min:
-90.00000000
(Type is Float32)
-
valid_max:
90.00000000
(Type is Float32)
-
origname:
solar_elevation
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/solar_elevation
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_tide_pole[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Solid Earth Pole Tide
(Type is String)
-
description:
Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.5
(Type is String)
-
origname:
tide_pole
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/tide_pole
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_e_bckgrd[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Expected background count rate
(Type is String)
-
description:
Expected background count rate based on sun angle, surface slope, for unit surface reflectance
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
e_bckgrd
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/e_bckgrd
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_cloud_flg_asr[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
cloud flag confidence
(Type is String)
-
description:
Indicates cloud attenuation as calculated from the apparent surface reflectance, assuming a white snow surface
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence
(Type is String)
-
flag_values:
0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
origname:
cloud_flg_asr
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/cloud_flg_asr
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_bckgrd[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Background count rate
(Type is String)
-
description:
Background count rate, derived from the ATL03 50-shot-average, interpolated to the segment center.
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
bckgrd
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/bckgrd
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_geophysical_neutat_delay_total[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Total Neutral Atmospheric Delay
(Type is String)
-
description:
Total neutral atmosphere delay correction (wet+dry).
(Type is String)
-
source:
ATL03a ATBD
(Type is String)
-
origname:
neutat_delay_total
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/geophysical/neutat_delay_total
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_atl06_quality_summary[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
ATL06_Quality_Summary
(Type is String)
-
description:
The ATL06_quality_summary parameter indicates the best-quality subset of all ATL06 data. A zero in this parameter implies that no data-quality tests have found a problem with the segment, a one implies that some potential problem has been found. Users who select only segments with zero values for this flag can be relatively certain of obtaining high-quality data, but will likely miss a significant fraction of usable data, particularly in cloudy, rough, or low-surface-reflectance conditions.
(Type is String)
-
source:
section 4.3
(Type is String)
-
flag_meanings:
best_quality potential_problem
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
atl06_quality_summary
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/atl06_quality_summary
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_segment_id[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Int32)
-
attributes
-
_FillValue:
0
(Type is Int32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number, counting from the equator. Equal to the segment_id for the second of the two 20m ATL03 segments included in the 40m ATL06 segment
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/segment_id
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_bias_correction_fpb_mean_corr[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
first photon bias mean correction
(Type is String)
-
description:
Estimated first-photon bias (fpb) correction to mean segment height
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/bias_correction/fpb_mean_corr
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_bias_correction_fpb_mean_corr_sigma[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb mean corr sigma
(Type is String)
-
description:
Estimated error in fpb_mean_corr
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr_sigma
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/bias_correction/fpb_mean_corr_sigma
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_bias_correction_fpb_med_corr[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr
(Type is String)
-
description:
First-photon-bias correction giving the difference between the mean segment height and the corrected median height
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/bias_correction/fpb_med_corr
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_bias_correction_fpb_med_corr_sigma[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr sigma
(Type is String)
-
description:
Estimated error in fpb_med_corr
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr_sigma
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/bias_correction/fpb_med_corr_sigma
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_bias_correction_fpb_n_corr[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
counts
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb number photons corr
(Type is String)
-
description:
Estimated window photon count after first-photon-bias correction
(Type is String)
-
source:
section 4.3.3.3
(Type is String)
-
origname:
fpb_n_corr
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/bias_correction/fpb_n_corr
(Type is String)
-
coordinates:
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(Type is String)
gt2r_land_ice_segments_bias_correction_tx_mean_corr[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape mean correction
(Type is String)
-
description:
Estimate of the difference between the mean of the full-waveform transmit-pulse and the mean of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_mean_corr
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/bias_correction/tx_mean_corr
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_bias_correction_med_r_fit[
/gt2r_land_ice_segments_delta_time=
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(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
mean median residual
(Type is String)
-
description:
Difference between uncorrected mean and median of linear fit residuals
(Type is String)
-
source:
section 3.3.5
(Type is String)
-
origname:
med_r_fit
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/bias_correction/med_r_fit
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_land_ice_segments_bias_correction_tx_med_corr[
/gt2r_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape median correction
(Type is String)
-
description:
Estimate of the difference between the median of the full-waveform transmit-pulse mean and the median of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_med_corr
(Type is String)
-
fullnamepath:
/gt2r/land_ice_segments/bias_correction/tx_med_corr
(Type is String)
-
coordinates:
gt2r_land_ice_segments_delta_time gt2r_land_ice_segments_latitude gt2r_land_ice_segments_longitude
(Type is String)
gt2r_residual_histogram_count[
/gt2r_residual_histogram_delta_time=
0..5851]
[
/gt2r_residual_histogram_dh=
0..999]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Bin Counts
(Type is String)
-
description:
Residual count in 1-cm bins, for PE within 10 (horizontal) m of segment centers for each histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
count
(Type is String)
-
fullnamepath:
/gt2r/residual_histogram/count
(Type is String)
-
coordinates:
gt2r_residual_histogram_delta_time gt2r_residual_histogram_lat_mean gt2r_residual_histogram_lon_mean
(Type is String)
gt2r_residual_histogram_lat_mean[
/gt2r_residual_histogram_delta_time=
0..5851]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Latitude Mean
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Mean latitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
origname:
lat_mean
(Type is String)
-
fullnamepath:
/gt2r/residual_histogram/lat_mean
(Type is String)
-
coordinates:
gt2r_residual_histogram_delta_time gt2r_residual_histogram_lon_mean
(Type is String)
gt2r_residual_histogram_bckgrd_per_bin[
/gt2r_residual_histogram_delta_time=
0..5851]
(Type is Float32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Expected background PEs
(Type is String)
-
description:
Number of background PE expected for the bins in each column of the histogram based on the observed background rate (bckgrd).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
bckgrd_per_bin
(Type is String)
-
fullnamepath:
/gt2r/residual_histogram/bckgrd_per_bin
(Type is String)
-
coordinates:
gt2r_residual_histogram_delta_time gt2r_residual_histogram_lat_mean gt2r_residual_histogram_lon_mean
(Type is String)
gt2r_residual_histogram_x_atc_mean[
/gt2r_residual_histogram_delta_time=
0..5851]
(Type is Float64)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Along Track Coordinate Mean
(Type is String)
-
description:
Mean along-track coordinate of the segments included in the histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
x_atc_mean
(Type is String)
-
fullnamepath:
/gt2r/residual_histogram/x_atc_mean
(Type is String)
-
coordinates:
gt2r_residual_histogram_delta_time gt2r_residual_histogram_lat_mean gt2r_residual_histogram_lon_mean
(Type is String)
gt2r_residual_histogram_segment_id_list[
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0..5851]
[
/gt2r_residual_histogram_ds_segment_id=
0..9]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Segment ID List
(Type is String)
-
description:
Segments ids included in each column of the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
_FillValue:
2147483647
(Type is Int32)
-
origname:
segment_id_list
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
gt2r_residual_histogram_delta_time gt2r_residual_histogram_lat_mean gt2r_residual_histogram_lon_mean
(Type is String)
gt2r_residual_histogram_pulse_count[
/gt2r_residual_histogram_delta_time=
0..5851]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Number of Histogram Segment Pulses
(Type is String)
-
description:
Number of pulses potentially included in the histogram (pulses are counted if they are in the central 20 m of each segment, even if no PE from the pulse are selected).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
pulse_count
(Type is String)
-
fullnamepath:
/gt2r/residual_histogram/pulse_count
(Type is String)
-
coordinates:
gt2r_residual_histogram_delta_time gt2r_residual_histogram_lat_mean gt2r_residual_histogram_lon_mean
(Type is String)
gt2r_residual_histogram_lon_mean[
/gt2r_residual_histogram_delta_time=
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(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude Mean
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Mean longitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
lon_mean
(Type is String)
-
fullnamepath:
/gt2r/residual_histogram/lon_mean
(Type is String)
-
coordinates:
gt2r_residual_histogram_delta_time gt2r_residual_histogram_lat_mean
(Type is String)
gt2r_segment_quality_record_number[
/gt2r_segment_quality_delta_time=
0..62773]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
long_name:
Land Ice Height Index
(Type is String)
-
description:
For those segments that have adequate signal strength, this parameter gives the record for the pair within the other groups in the granule.
(Type is String)
-
source:
section 4.2
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
origname:
record_number
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
gt2r_segment_quality_delta_time gt2r_segment_quality_reference_pt_lat gt2r_segment_quality_reference_pt_lon
(Type is String)
gt2r_segment_quality_reference_pt_lat[
/gt2r_segment_quality_delta_time=
0..62773]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
long_name:
Latitude
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Latitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
contentType:
referenceInformation
(Type is String)
-
origname:
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(Type is String)
-
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(Type is String)
-
coordinates:
gt2r_segment_quality_delta_time gt2r_segment_quality_reference_pt_lon
(Type is String)
gt2r_segment_quality_reference_pt_lon[
/gt2r_segment_quality_delta_time=
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(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Longitude
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Longitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
reference_pt_lon
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
gt2r_segment_quality_delta_time gt2r_segment_quality_reference_pt_lat
(Type is String)
gt2r_segment_quality_segment_id[
/gt2r_segment_quality_delta_time=
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(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number corresponding to the second of two ATL03 segments in the ATL06 segment, counted from the RGT equator crossing
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt2r/segment_quality/segment_id
(Type is String)
-
coordinates:
gt2r_segment_quality_delta_time gt2r_segment_quality_reference_pt_lat gt2r_segment_quality_reference_pt_lon
(Type is String)
gt2r_segment_quality_signal_selection_source[
/gt2r_segment_quality_delta_time=
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(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
fullnamepath:
/gt2r/segment_quality/signal_selection_source
(Type is String)
-
coordinates:
gt2r_segment_quality_delta_time gt2r_segment_quality_reference_pt_lat gt2r_segment_quality_reference_pt_lon
(Type is String)
gt2r_segment_quality_signal_selection_status_signal_selection_status_all[
/gt2r_segment_quality_delta_time=
0..62773]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Status Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using all ATL03-flagged PEs. 0=Signal selection succeeded using all ATL03-flagged PEs (or algorthm not attempted); 1=Signal selection using all ATL03-flagged PEs failed the 20-meter-spread test; 2=Signal selection using all ATL03-flagged PEs failed the 10-photon-count test; 3=Signal selection using all ATL03-flagged PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_all
(Type is String)
-
fullnamepath:
/gt2r/segment_quality/signal_selection_status/signal_selection_status_all
(Type is String)
-
coordinates:
gt2r_segment_quality_delta_time gt2r_segment_quality_reference_pt_lat gt2r_segment_quality_reference_pt_lon
(Type is String)
gt2r_segment_quality_signal_selection_status_signal_selection_status_backup[
/gt2r_segment_quality_delta_time=
0..62773]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Backup Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using the backup signal finder. 0=Signal selection succeeded using the backup signal finder after centering the window on flagged PE (or backup signal finder not attempted); 1=Signal selection succeeded using the backup signal finder after searching for the strongest-signal window using four adjacent ATL03 segments; 2=Signal selection using the backup signal finder failed the 20-meter spread test; 3=Signal selection using the backup signal finder failed the 10-photon count test; 4=Signal selection using the backup signal finder failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_widen failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3, 4
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
4
(Type is Int8)
-
origname:
signal_selection_status_backup
(Type is String)
-
fullnamepath:
/gt2r/segment_quality/signal_selection_status/signal_selection_status_backup
(Type is String)
-
coordinates:
gt2r_segment_quality_delta_time gt2r_segment_quality_reference_pt_lat gt2r_segment_quality_reference_pt_lon
(Type is String)
gt2r_segment_quality_signal_selection_status_signal_selection_status_confident[
/gt2r_segment_quality_delta_time=
0..62773]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Confident Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using low or better PEs. 0=Signal selection succeeded using ATL03 low-or-better confidence PEs; 1=Signal selection using ATL03 low-or-better confidence PEs failed the 20-meter-spread test; 2=Signal selection using ATL03 low-or-better confidence PEs failed the 10-photon-count test; 3=Signal selection using ATL03 low-or-better confidence PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_confident
(Type is String)
-
fullnamepath:
/gt2r/segment_quality/signal_selection_status/signal_selection_status_confident
(Type is String)
-
coordinates:
gt2r_segment_quality_delta_time gt2r_segment_quality_reference_pt_lat gt2r_segment_quality_reference_pt_lon
(Type is String)
gt1l_land_ice_segments_sigma_geo_h[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Vertical Geolocation Error
(Type is String)
-
description:
Total vertical geolocation error due to PPD and POD, including the effects of horizontal geolocation error on the segment vertical error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
origname:
sigma_geo_h
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/sigma_geo_h
(Type is String)
-
coordinates:
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(Type is String)
gt1l_land_ice_segments_h_li_sigma[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Expected RMS segment misfit
(Type is String)
-
description:
Propagated error due to sampling error and FPB correction from the land ice algorithm
(Type is String)
-
source:
section 4.4
(Type is String)
-
origname:
h_li_sigma
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/h_li_sigma
(Type is String)
-
coordinates:
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(Type is String)
gt1l_land_ice_segments_fit_statistics_h_mean[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Height Mean
(Type is String)
-
description:
Mean surface height, not corrected for first-photon bias or pulse truncation.
(Type is String)
-
source:
ATL06 ATBD
(Type is String)
-
origname:
h_mean
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/fit_statistics/h_mean
(Type is String)
-
coordinates:
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(Type is String)
gt1l_land_ice_segments_fit_statistics_signal_selection_source[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
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RDE of misfit between PE heights and the along-track segment fit.
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source:
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source:
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Width of the surface window, top to bottom
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Longitude of segment center, , WGS84, East=+
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Standard land-ice segment height determined by land ice algorithm, corrected for first-photon bias, representing the median- based height of the selected PEs
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The direction, eastwards from north, of the laser beam vector as seen by an observer at the laser ground spot viewing toward the spacecraft (i.e., the vector from the ground to the spacecraft).
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Azimuth of the pair-track, east of local north.
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Along-track component of the geolocation error.
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Along-track y coordinate of the segment, relative to the RGT, measured along the perpendicular to the RGT, positive to the right of the RGT.
(Type is String)
-
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(Type is Float32)
-
attributes
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
DEM Height
(Type is String)
-
description:
Height of the DEM, interpolated by cubic-spline interpolation in the DEM coordinate system to the PE location.
(Type is String)
-
source:
DTU10/GMTED/GIMP
(Type is String)
-
origname:
dem_h
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/dem/dem_h
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_dem_geoid_h[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Geoid Height
(Type is String)
-
description:
Geoid height above WGS-84 reference ellipsoid (range -107 to 86m),
(Type is String)
-
source:
EGM2008
(Type is String)
-
origname:
geoid_h
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/dem/geoid_h
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_msw_flag[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Multiple Scattering Warning Flag
(Type is String)
-
description:
Combined flag indicating the risks of severe multiple scattering. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight.
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5
(Type is String)
-
flag_values:
-1, 0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
-1
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
origname:
msw_flag
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/msw_flag
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_bsnow_conf[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow confidence
(Type is String)
-
description:
Confidence flag for presence of blowing snow
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_conf
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/bsnow_conf
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_bsnow_h[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow Layer Top Height
(Type is String)
-
description:
Blowing snow layer top height
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_h
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/bsnow_h
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_tide_ocean[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Ocean Tide
(Type is String)
-
description:
Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.1
(Type is String)
-
origname:
tide_ocean
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/tide_ocean
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_tide_earth[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Earth Tide
(Type is String)
-
description:
Solid Earth Tides
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.3
(Type is String)
-
origname:
tide_earth
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/tide_earth
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_solar_azimuth[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar azimuth
(Type is String)
-
description:
The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
(Type is String)
-
source:
ATL03
(Type is String)
-
origname:
solar_azimuth
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/solar_azimuth
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_r_eff[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Effective uncorrected reflectance
(Type is String)
-
description:
Effective reflectance, uncorrected for atmospheric effects.
(Type is String)
-
source:
section 3.1.5.4
(Type is String)
-
origname:
r_eff
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/r_eff
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_dac[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Dynamic Atmosphere Correction
(Type is String)
-
description:
Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect.
(Type is String)
-
source:
ATL03, 6.3.2
(Type is String)
-
origname:
dac
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/dac
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_tide_load[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Load Tide
(Type is String)
-
description:
Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.4
(Type is String)
-
origname:
tide_load
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/tide_load
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_bsnow_od[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Blowing snow OD
(Type is String)
-
description:
Optical thickness of blowing snow layer.
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_od
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/bsnow_od
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_cloud_flg_atm[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Cloud flag
(Type is String)
-
description:
Indicates the probability of clouds based on backscatter measurements
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
no yes
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
cloud_flg_atm
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/cloud_flg_atm
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_solar_elevation[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar elevation
(Type is String)
-
description:
Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low-precision value, with approximately TBD degree accuracy.
(Type is String)
-
source:
ATL03
(Type is String)
-
valid_min:
-90.00000000
(Type is Float32)
-
valid_max:
90.00000000
(Type is Float32)
-
origname:
solar_elevation
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/solar_elevation
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_tide_pole[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Solid Earth Pole Tide
(Type is String)
-
description:
Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.5
(Type is String)
-
origname:
tide_pole
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/tide_pole
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_e_bckgrd[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Expected background count rate
(Type is String)
-
description:
Expected background count rate based on sun angle, surface slope, for unit surface reflectance
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
e_bckgrd
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/e_bckgrd
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_cloud_flg_asr[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
cloud flag confidence
(Type is String)
-
description:
Indicates cloud attenuation as calculated from the apparent surface reflectance, assuming a white snow surface
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence
(Type is String)
-
flag_values:
0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
origname:
cloud_flg_asr
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/cloud_flg_asr
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_bckgrd[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Background count rate
(Type is String)
-
description:
Background count rate, derived from the ATL03 50-shot-average, interpolated to the segment center.
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
bckgrd
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/bckgrd
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_geophysical_neutat_delay_total[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Total Neutral Atmospheric Delay
(Type is String)
-
description:
Total neutral atmosphere delay correction (wet+dry).
(Type is String)
-
source:
ATL03a ATBD
(Type is String)
-
origname:
neutat_delay_total
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/geophysical/neutat_delay_total
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_atl06_quality_summary[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
ATL06_Quality_Summary
(Type is String)
-
description:
The ATL06_quality_summary parameter indicates the best-quality subset of all ATL06 data. A zero in this parameter implies that no data-quality tests have found a problem with the segment, a one implies that some potential problem has been found. Users who select only segments with zero values for this flag can be relatively certain of obtaining high-quality data, but will likely miss a significant fraction of usable data, particularly in cloudy, rough, or low-surface-reflectance conditions.
(Type is String)
-
source:
section 4.3
(Type is String)
-
flag_meanings:
best_quality potential_problem
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
atl06_quality_summary
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/atl06_quality_summary
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_segment_id[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Int32)
-
attributes
-
_FillValue:
0
(Type is Int32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number, counting from the equator. Equal to the segment_id for the second of the two 20m ATL03 segments included in the 40m ATL06 segment
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/segment_id
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_bias_correction_fpb_mean_corr[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
first photon bias mean correction
(Type is String)
-
description:
Estimated first-photon bias (fpb) correction to mean segment height
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/bias_correction/fpb_mean_corr
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_bias_correction_fpb_mean_corr_sigma[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb mean corr sigma
(Type is String)
-
description:
Estimated error in fpb_mean_corr
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr_sigma
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/bias_correction/fpb_mean_corr_sigma
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_bias_correction_fpb_med_corr[
/gt1l_land_ice_segments_delta_time=
0..58696]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr
(Type is String)
-
description:
First-photon-bias correction giving the difference between the mean segment height and the corrected median height
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/bias_correction/fpb_med_corr
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_bias_correction_fpb_med_corr_sigma[
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(Type is Float32)
-
attributes
-
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3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr sigma
(Type is String)
-
description:
Estimated error in fpb_med_corr
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr_sigma
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/bias_correction/fpb_med_corr_sigma
(Type is String)
-
coordinates:
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(Type is String)
gt1l_land_ice_segments_bias_correction_fpb_n_corr[
/gt1l_land_ice_segments_delta_time=
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(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
counts
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb number photons corr
(Type is String)
-
description:
Estimated window photon count after first-photon-bias correction
(Type is String)
-
source:
section 4.3.3.3
(Type is String)
-
origname:
fpb_n_corr
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/bias_correction/fpb_n_corr
(Type is String)
-
coordinates:
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(Type is String)
gt1l_land_ice_segments_bias_correction_tx_mean_corr[
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(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape mean correction
(Type is String)
-
description:
Estimate of the difference between the mean of the full-waveform transmit-pulse and the mean of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_mean_corr
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/bias_correction/tx_mean_corr
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_bias_correction_med_r_fit[
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(Type is Float32)
-
attributes
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3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
mean median residual
(Type is String)
-
description:
Difference between uncorrected mean and median of linear fit residuals
(Type is String)
-
source:
section 3.3.5
(Type is String)
-
origname:
med_r_fit
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/bias_correction/med_r_fit
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_land_ice_segments_bias_correction_tx_med_corr[
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(Type is Float32)
-
attributes
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3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape median correction
(Type is String)
-
description:
Estimate of the difference between the median of the full-waveform transmit-pulse mean and the median of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_med_corr
(Type is String)
-
fullnamepath:
/gt1l/land_ice_segments/bias_correction/tx_med_corr
(Type is String)
-
coordinates:
gt1l_land_ice_segments_delta_time gt1l_land_ice_segments_latitude gt1l_land_ice_segments_longitude
(Type is String)
gt1l_residual_histogram_count[
/gt1l_residual_histogram_delta_time=
0..5861]
[
/gt1l_residual_histogram_dh=
0..999]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Bin Counts
(Type is String)
-
description:
Residual count in 1-cm bins, for PE within 10 (horizontal) m of segment centers for each histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
count
(Type is String)
-
fullnamepath:
/gt1l/residual_histogram/count
(Type is String)
-
coordinates:
gt1l_residual_histogram_delta_time gt1l_residual_histogram_lat_mean gt1l_residual_histogram_lon_mean
(Type is String)
gt1l_residual_histogram_lat_mean[
/gt1l_residual_histogram_delta_time=
0..5861]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Latitude Mean
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Mean latitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
origname:
lat_mean
(Type is String)
-
fullnamepath:
/gt1l/residual_histogram/lat_mean
(Type is String)
-
coordinates:
gt1l_residual_histogram_delta_time gt1l_residual_histogram_lon_mean
(Type is String)
gt1l_residual_histogram_bckgrd_per_bin[
/gt1l_residual_histogram_delta_time=
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(Type is Float32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Expected background PEs
(Type is String)
-
description:
Number of background PE expected for the bins in each column of the histogram based on the observed background rate (bckgrd).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
bckgrd_per_bin
(Type is String)
-
fullnamepath:
/gt1l/residual_histogram/bckgrd_per_bin
(Type is String)
-
coordinates:
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(Type is String)
gt1l_residual_histogram_x_atc_mean[
/gt1l_residual_histogram_delta_time=
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(Type is Float64)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Along Track Coordinate Mean
(Type is String)
-
description:
Mean along-track coordinate of the segments included in the histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
x_atc_mean
(Type is String)
-
fullnamepath:
/gt1l/residual_histogram/x_atc_mean
(Type is String)
-
coordinates:
gt1l_residual_histogram_delta_time gt1l_residual_histogram_lat_mean gt1l_residual_histogram_lon_mean
(Type is String)
gt1l_residual_histogram_segment_id_list[
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[
/gt1l_residual_histogram_ds_segment_id=
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(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Segment ID List
(Type is String)
-
description:
Segments ids included in each column of the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
_FillValue:
2147483647
(Type is Int32)
-
origname:
segment_id_list
(Type is String)
-
fullnamepath:
/gt1l/residual_histogram/segment_id_list
(Type is String)
-
coordinates:
gt1l_residual_histogram_delta_time gt1l_residual_histogram_lat_mean gt1l_residual_histogram_lon_mean
(Type is String)
gt1l_residual_histogram_pulse_count[
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(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Number of Histogram Segment Pulses
(Type is String)
-
description:
Number of pulses potentially included in the histogram (pulses are counted if they are in the central 20 m of each segment, even if no PE from the pulse are selected).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
pulse_count
(Type is String)
-
fullnamepath:
/gt1l/residual_histogram/pulse_count
(Type is String)
-
coordinates:
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(Type is String)
gt1l_residual_histogram_lon_mean[
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(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude Mean
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Mean longitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
lon_mean
(Type is String)
-
fullnamepath:
/gt1l/residual_histogram/lon_mean
(Type is String)
-
coordinates:
gt1l_residual_histogram_delta_time gt1l_residual_histogram_lat_mean
(Type is String)
gt1l_segment_quality_record_number[
/gt1l_segment_quality_delta_time=
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(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
long_name:
Land Ice Height Index
(Type is String)
-
description:
For those segments that have adequate signal strength, this parameter gives the record for the pair within the other groups in the granule.
(Type is String)
-
source:
section 4.2
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
origname:
record_number
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt1l_segment_quality_reference_pt_lat[
/gt1l_segment_quality_delta_time=
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(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
long_name:
Latitude
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Latitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
contentType:
referenceInformation
(Type is String)
-
origname:
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(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
gt1l_segment_quality_delta_time gt1l_segment_quality_reference_pt_lon
(Type is String)
gt1l_segment_quality_reference_pt_lon[
/gt1l_segment_quality_delta_time=
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(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Longitude
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Longitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
reference_pt_lon
(Type is String)
-
fullnamepath:
/gt1l/segment_quality/reference_pt_lon
(Type is String)
-
coordinates:
gt1l_segment_quality_delta_time gt1l_segment_quality_reference_pt_lat
(Type is String)
gt1l_segment_quality_segment_id[
/gt1l_segment_quality_delta_time=
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(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number corresponding to the second of two ATL03 segments in the ATL06 segment, counted from the RGT equator crossing
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt1l/segment_quality/segment_id
(Type is String)
-
coordinates:
gt1l_segment_quality_delta_time gt1l_segment_quality_reference_pt_lat gt1l_segment_quality_reference_pt_lon
(Type is String)
gt1l_segment_quality_signal_selection_source[
/gt1l_segment_quality_delta_time=
0..62800]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
fullnamepath:
/gt1l/segment_quality/signal_selection_source
(Type is String)
-
coordinates:
gt1l_segment_quality_delta_time gt1l_segment_quality_reference_pt_lat gt1l_segment_quality_reference_pt_lon
(Type is String)
gt1l_segment_quality_signal_selection_status_signal_selection_status_all[
/gt1l_segment_quality_delta_time=
0..62800]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Status Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using all ATL03-flagged PEs. 0=Signal selection succeeded using all ATL03-flagged PEs (or algorthm not attempted); 1=Signal selection using all ATL03-flagged PEs failed the 20-meter-spread test; 2=Signal selection using all ATL03-flagged PEs failed the 10-photon-count test; 3=Signal selection using all ATL03-flagged PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_all
(Type is String)
-
fullnamepath:
/gt1l/segment_quality/signal_selection_status/signal_selection_status_all
(Type is String)
-
coordinates:
gt1l_segment_quality_delta_time gt1l_segment_quality_reference_pt_lat gt1l_segment_quality_reference_pt_lon
(Type is String)
gt1l_segment_quality_signal_selection_status_signal_selection_status_backup[
/gt1l_segment_quality_delta_time=
0..62800]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Backup Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using the backup signal finder. 0=Signal selection succeeded using the backup signal finder after centering the window on flagged PE (or backup signal finder not attempted); 1=Signal selection succeeded using the backup signal finder after searching for the strongest-signal window using four adjacent ATL03 segments; 2=Signal selection using the backup signal finder failed the 20-meter spread test; 3=Signal selection using the backup signal finder failed the 10-photon count test; 4=Signal selection using the backup signal finder failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_widen failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3, 4
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
4
(Type is Int8)
-
origname:
signal_selection_status_backup
(Type is String)
-
fullnamepath:
/gt1l/segment_quality/signal_selection_status/signal_selection_status_backup
(Type is String)
-
coordinates:
gt1l_segment_quality_delta_time gt1l_segment_quality_reference_pt_lat gt1l_segment_quality_reference_pt_lon
(Type is String)
gt1l_segment_quality_signal_selection_status_signal_selection_status_confident[
/gt1l_segment_quality_delta_time=
0..62800]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Confident Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using low or better PEs. 0=Signal selection succeeded using ATL03 low-or-better confidence PEs; 1=Signal selection using ATL03 low-or-better confidence PEs failed the 20-meter-spread test; 2=Signal selection using ATL03 low-or-better confidence PEs failed the 10-photon-count test; 3=Signal selection using ATL03 low-or-better confidence PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_confident
(Type is String)
-
fullnamepath:
/gt1l/segment_quality/signal_selection_status/signal_selection_status_confident
(Type is String)
-
coordinates:
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(Type is String)
quality_assessment_qa_granule_pass_fail[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Granule Pass Flag
(Type is String)
-
description:
Flag indicating granule quality. 0=granule passes automatic QA. 1=granule fails automatic QA.
(Type is String)
-
source:
Operations
(Type is String)
-
flag_meanings:
PASS FAIL
(Type is String)
-
flag_values:
0, 1
(Type is Int32)
-
valid_min:
0
(Type is Int32)
-
valid_max:
1
(Type is Int32)
-
origname:
qa_granule_pass_fail
(Type is String)
-
fullnamepath:
/quality_assessment/qa_granule_pass_fail
(Type is String)
quality_assessment_gt1r_lon_mean[
/quality_assessment_gt1r_delta_time=
0..125]
(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude Mean
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Mean longitude of the 10km segment.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
lon_mean
(Type is String)
-
fullnamepath:
/quality_assessment/gt1r/lon_mean
(Type is String)
-
coordinates:
quality_assessment_gt1r_delta_time quality_assessment_gt1r_lat_mean
(Type is String)
quality_assessment_gt1r_signal_selection_source_fraction_0[
/quality_assessment_gt1r_delta_time=
0..125]
(Type is Float32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source Fraction 0
(Type is String)
-
description:
The fraction of 20m segments with signal_selection_source equal to zero.
(Type is String)
-
source:
section 7.2
(Type is String)
-
valid_min:
0.000000000
(Type is Float32)
-
valid_max:
1.000000000
(Type is Float32)
-
origname:
signal_selection_source_fraction_0
(Type is String)
-
fullnamepath:
/quality_assessment/gt1r/signal_selection_source_fraction_0
(Type is String)
-
coordinates:
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Mean surface height, not corrected for first-photon bias or pulse truncation.
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Signal-to-noise ratio in the final refined window
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RDE of misfit between PE heights and the along-track segment fit.
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(Type is String)
-
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(Type is String)
-
coordinates:
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(Type is String)
gt3l_land_ice_segments_fit_statistics_dh_fit_dx[
/gt3l_land_ice_segments_delta_time=
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(Type is Float32)
-
attributes
-
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(Type is Float32)
-
units:
meters/meters
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Along Track Slope
(Type is String)
-
description:
Along-track slope from along-track segment fit
(Type is String)
-
source:
section 3.3.5.1
(Type is String)
-
origname:
dh_fit_dx
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt3l_land_ice_segments_fit_statistics_n_fit_photons[
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(Type is Int32)
-
attributes
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(Type is Int32)
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units:
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(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Number of Photons in Fit
(Type is String)
-
description:
Number of PEs used in determining h_li, after editing
(Type is String)
-
source:
section 3.3.5.2
(Type is String)
-
origname:
n_fit_photons
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt3l_land_ice_segments_fit_statistics_w_surface_window_final[
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(Type is Float32)
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attributes
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(Type is Float32)
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(Type is String)
-
contentType:
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(Type is String)
-
long_name:
Surface Window Width
(Type is String)
-
description:
Width of the surface window, top to bottom
(Type is String)
-
source:
section 3.3.5.2
(Type is String)
-
origname:
w_surface_window_final
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt3l_land_ice_segments_longitude[
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(Type is Float64)
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attributes
-
units:
degrees_east
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Longitude of segment center, , WGS84, East=+
(Type is String)
-
source:
section 3.10
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
longitude
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude
(Type is String)
gt3l_land_ice_segments_latitude[
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(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Latitude
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Latitude of segment center, WGS84, North=+,
(Type is String)
-
source:
section 3.10
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
origname:
latitude
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/latitude
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_h_li[
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(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Land Ice height
(Type is String)
-
description:
Standard land-ice segment height determined by land ice algorithm, corrected for first-photon bias, representing the median- based height of the selected PEs
(Type is String)
-
source:
section 4.4
(Type is String)
-
origname:
h_li
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/h_li
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_ground_track_ref_azimuth[
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(Type is Float32)
-
attributes
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_FillValue:
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(Type is Float32)
-
units:
radians
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Azimuth
(Type is String)
-
description:
The direction, eastwards from north, of the laser beam vector as seen by an observer at the laser ground spot viewing toward the spacecraft (i.e., the vector from the ground to the spacecraft).
(Type is String)
-
source:
ATL03g, Section 3.3
(Type is String)
-
origname:
ref_azimuth
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/ground_track/ref_azimuth
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_ground_track_seg_azimuth[
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(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
degrees
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Segment Azimuth
(Type is String)
-
description:
Azimuth of the pair-track, east of local north.
(Type is String)
-
source:
section 3.1.2.2
(Type is String)
-
origname:
seg_azimuth
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/ground_track/seg_azimuth
(Type is String)
-
coordinates:
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(Type is String)
gt3l_land_ice_segments_ground_track_sigma_geo_at[
/gt3l_land_ice_segments_delta_time=
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(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Across Track Geolocation Error
(Type is String)
-
description:
Along-track component of the geolocation error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
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(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_ground_track_sigma_geo_xt[
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(Type is Float32)
-
attributes
-
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(Type is Float32)
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units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Along Track Geolocation Error
(Type is String)
-
description:
Across-track component of the geolocation error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
origname:
sigma_geo_xt
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/ground_track/sigma_geo_xt
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_ground_track_ref_coelv[
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(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
radians
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Co-elevation
(Type is String)
-
description:
Coelevation (CE) is direction from vertical of the laser beam as seen by an observer located at the laser ground spot.
(Type is String)
-
source:
ATL03g, Section 3.3
(Type is String)
-
origname:
ref_coelv
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/ground_track/ref_coelv
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_ground_track_x_atc[
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(Type is Float64)
-
attributes
-
_FillValue:
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(Type is Float64)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
X Along Track
(Type is String)
-
description:
The along-track x-coordinate of the segment, measured parallel to the RGT, measured from the ascending node of the equatorial crossing of a given RGT.
(Type is String)
-
source:
section 3.1.2.2
(Type is String)
-
origname:
x_atc
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/ground_track/x_atc
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_ground_track_y_atc[
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(Type is Float32)
-
attributes
-
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(Type is Float32)
-
units:
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(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Y Along Track
(Type is String)
-
description:
Along-track y coordinate of the segment, relative to the RGT, measured along the perpendicular to the RGT, positive to the right of the RGT.
(Type is String)
-
source:
section 3.1.2.2
(Type is String)
-
origname:
y_atc
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/ground_track/y_atc
(Type is String)
-
coordinates:
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(Type is String)
gt3l_land_ice_segments_dem_dem_flag[
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(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
DEM Source Flag
(Type is String)
-
description:
Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS, 4=Antarctic.
(Type is String)
-
source:
DTU10/GMTED/GIMP
(Type is String)
-
flag_meanings:
none gimp gmted mss antarctic
(Type is String)
-
flag_values:
0, 1, 2, 3, 4
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
4
(Type is Int8)
-
origname:
dem_flag
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt3l_land_ice_segments_dem_dem_h[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
DEM Height
(Type is String)
-
description:
Height of the DEM, interpolated by cubic-spline interpolation in the DEM coordinate system to the PE location.
(Type is String)
-
source:
DTU10/GMTED/GIMP
(Type is String)
-
origname:
dem_h
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/dem/dem_h
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_dem_geoid_h[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Geoid Height
(Type is String)
-
description:
Geoid height above WGS-84 reference ellipsoid (range -107 to 86m),
(Type is String)
-
source:
EGM2008
(Type is String)
-
origname:
geoid_h
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/dem/geoid_h
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_msw_flag[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Int8)
-
attributes
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Multiple Scattering Warning Flag
(Type is String)
-
description:
Combined flag indicating the risks of severe multiple scattering. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight.
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5
(Type is String)
-
flag_values:
-1, 0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
-1
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
origname:
msw_flag
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/msw_flag
(Type is String)
-
coordinates:
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(Type is String)
gt3l_land_ice_segments_geophysical_bsnow_conf[
/gt3l_land_ice_segments_delta_time=
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(Type is Int8)
-
attributes
-
_FillValue:
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(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow confidence
(Type is String)
-
description:
Confidence flag for presence of blowing snow
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_conf
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/bsnow_conf
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_bsnow_h[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow Layer Top Height
(Type is String)
-
description:
Blowing snow layer top height
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_h
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/bsnow_h
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_tide_ocean[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Ocean Tide
(Type is String)
-
description:
Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.1
(Type is String)
-
origname:
tide_ocean
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/tide_ocean
(Type is String)
-
coordinates:
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(Type is String)
gt3l_land_ice_segments_geophysical_tide_earth[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Earth Tide
(Type is String)
-
description:
Solid Earth Tides
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.3
(Type is String)
-
origname:
tide_earth
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/tide_earth
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_solar_azimuth[
/gt3l_land_ice_segments_delta_time=
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(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar azimuth
(Type is String)
-
description:
The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
(Type is String)
-
source:
ATL03
(Type is String)
-
origname:
solar_azimuth
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/solar_azimuth
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_r_eff[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Effective uncorrected reflectance
(Type is String)
-
description:
Effective reflectance, uncorrected for atmospheric effects.
(Type is String)
-
source:
section 3.1.5.4
(Type is String)
-
origname:
r_eff
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/r_eff
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_dac[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Dynamic Atmosphere Correction
(Type is String)
-
description:
Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect.
(Type is String)
-
source:
ATL03, 6.3.2
(Type is String)
-
origname:
dac
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/dac
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_tide_load[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Load Tide
(Type is String)
-
description:
Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.4
(Type is String)
-
origname:
tide_load
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/tide_load
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_bsnow_od[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Blowing snow OD
(Type is String)
-
description:
Optical thickness of blowing snow layer.
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_od
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/bsnow_od
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_cloud_flg_atm[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Cloud flag
(Type is String)
-
description:
Indicates the probability of clouds based on backscatter measurements
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
no yes
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
cloud_flg_atm
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/cloud_flg_atm
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_solar_elevation[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar elevation
(Type is String)
-
description:
Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low-precision value, with approximately TBD degree accuracy.
(Type is String)
-
source:
ATL03
(Type is String)
-
valid_min:
-90.00000000
(Type is Float32)
-
valid_max:
90.00000000
(Type is Float32)
-
origname:
solar_elevation
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/solar_elevation
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_tide_pole[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Solid Earth Pole Tide
(Type is String)
-
description:
Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.5
(Type is String)
-
origname:
tide_pole
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/tide_pole
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_e_bckgrd[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Expected background count rate
(Type is String)
-
description:
Expected background count rate based on sun angle, surface slope, for unit surface reflectance
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
e_bckgrd
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/e_bckgrd
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_cloud_flg_asr[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
cloud flag confidence
(Type is String)
-
description:
Indicates cloud attenuation as calculated from the apparent surface reflectance, assuming a white snow surface
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence
(Type is String)
-
flag_values:
0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
origname:
cloud_flg_asr
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/cloud_flg_asr
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_bckgrd[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Background count rate
(Type is String)
-
description:
Background count rate, derived from the ATL03 50-shot-average, interpolated to the segment center.
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
bckgrd
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/bckgrd
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_geophysical_neutat_delay_total[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Total Neutral Atmospheric Delay
(Type is String)
-
description:
Total neutral atmosphere delay correction (wet+dry).
(Type is String)
-
source:
ATL03a ATBD
(Type is String)
-
origname:
neutat_delay_total
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/geophysical/neutat_delay_total
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_atl06_quality_summary[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
ATL06_Quality_Summary
(Type is String)
-
description:
The ATL06_quality_summary parameter indicates the best-quality subset of all ATL06 data. A zero in this parameter implies that no data-quality tests have found a problem with the segment, a one implies that some potential problem has been found. Users who select only segments with zero values for this flag can be relatively certain of obtaining high-quality data, but will likely miss a significant fraction of usable data, particularly in cloudy, rough, or low-surface-reflectance conditions.
(Type is String)
-
source:
section 4.3
(Type is String)
-
flag_meanings:
best_quality potential_problem
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
atl06_quality_summary
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/atl06_quality_summary
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_segment_id[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Int32)
-
attributes
-
_FillValue:
0
(Type is Int32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number, counting from the equator. Equal to the segment_id for the second of the two 20m ATL03 segments included in the 40m ATL06 segment
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/segment_id
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_bias_correction_fpb_mean_corr[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
first photon bias mean correction
(Type is String)
-
description:
Estimated first-photon bias (fpb) correction to mean segment height
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/bias_correction/fpb_mean_corr
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_bias_correction_fpb_mean_corr_sigma[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb mean corr sigma
(Type is String)
-
description:
Estimated error in fpb_mean_corr
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr_sigma
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/bias_correction/fpb_mean_corr_sigma
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_bias_correction_fpb_med_corr[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr
(Type is String)
-
description:
First-photon-bias correction giving the difference between the mean segment height and the corrected median height
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/bias_correction/fpb_med_corr
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_bias_correction_fpb_med_corr_sigma[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr sigma
(Type is String)
-
description:
Estimated error in fpb_med_corr
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr_sigma
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/bias_correction/fpb_med_corr_sigma
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_bias_correction_fpb_n_corr[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
counts
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb number photons corr
(Type is String)
-
description:
Estimated window photon count after first-photon-bias correction
(Type is String)
-
source:
section 4.3.3.3
(Type is String)
-
origname:
fpb_n_corr
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/bias_correction/fpb_n_corr
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_bias_correction_tx_mean_corr[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape mean correction
(Type is String)
-
description:
Estimate of the difference between the mean of the full-waveform transmit-pulse and the mean of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_mean_corr
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/bias_correction/tx_mean_corr
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_bias_correction_med_r_fit[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
mean median residual
(Type is String)
-
description:
Difference between uncorrected mean and median of linear fit residuals
(Type is String)
-
source:
section 3.3.5
(Type is String)
-
origname:
med_r_fit
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/bias_correction/med_r_fit
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_land_ice_segments_bias_correction_tx_med_corr[
/gt3l_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape median correction
(Type is String)
-
description:
Estimate of the difference between the median of the full-waveform transmit-pulse mean and the median of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_med_corr
(Type is String)
-
fullnamepath:
/gt3l/land_ice_segments/bias_correction/tx_med_corr
(Type is String)
-
coordinates:
gt3l_land_ice_segments_delta_time gt3l_land_ice_segments_latitude gt3l_land_ice_segments_longitude
(Type is String)
gt3l_residual_histogram_count[
/gt3l_residual_histogram_delta_time=
0..5838]
[
/gt3l_residual_histogram_dh=
0..999]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Bin Counts
(Type is String)
-
description:
Residual count in 1-cm bins, for PE within 10 (horizontal) m of segment centers for each histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
count
(Type is String)
-
fullnamepath:
/gt3l/residual_histogram/count
(Type is String)
-
coordinates:
gt3l_residual_histogram_delta_time gt3l_residual_histogram_lat_mean gt3l_residual_histogram_lon_mean
(Type is String)
gt3l_residual_histogram_lat_mean[
/gt3l_residual_histogram_delta_time=
0..5838]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Latitude Mean
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Mean latitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
origname:
lat_mean
(Type is String)
-
fullnamepath:
/gt3l/residual_histogram/lat_mean
(Type is String)
-
coordinates:
gt3l_residual_histogram_delta_time gt3l_residual_histogram_lon_mean
(Type is String)
gt3l_residual_histogram_bckgrd_per_bin[
/gt3l_residual_histogram_delta_time=
0..5838]
(Type is Float32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Expected background PEs
(Type is String)
-
description:
Number of background PE expected for the bins in each column of the histogram based on the observed background rate (bckgrd).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
bckgrd_per_bin
(Type is String)
-
fullnamepath:
/gt3l/residual_histogram/bckgrd_per_bin
(Type is String)
-
coordinates:
gt3l_residual_histogram_delta_time gt3l_residual_histogram_lat_mean gt3l_residual_histogram_lon_mean
(Type is String)
gt3l_residual_histogram_x_atc_mean[
/gt3l_residual_histogram_delta_time=
0..5838]
(Type is Float64)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Along Track Coordinate Mean
(Type is String)
-
description:
Mean along-track coordinate of the segments included in the histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
x_atc_mean
(Type is String)
-
fullnamepath:
/gt3l/residual_histogram/x_atc_mean
(Type is String)
-
coordinates:
gt3l_residual_histogram_delta_time gt3l_residual_histogram_lat_mean gt3l_residual_histogram_lon_mean
(Type is String)
gt3l_residual_histogram_segment_id_list[
/gt3l_residual_histogram_delta_time=
0..5838]
[
/gt3l_residual_histogram_ds_segment_id=
0..9]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Segment ID List
(Type is String)
-
description:
Segments ids included in each column of the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
_FillValue:
2147483647
(Type is Int32)
-
origname:
segment_id_list
(Type is String)
-
fullnamepath:
/gt3l/residual_histogram/segment_id_list
(Type is String)
-
coordinates:
gt3l_residual_histogram_delta_time gt3l_residual_histogram_lat_mean gt3l_residual_histogram_lon_mean
(Type is String)
gt3l_residual_histogram_pulse_count[
/gt3l_residual_histogram_delta_time=
0..5838]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Number of Histogram Segment Pulses
(Type is String)
-
description:
Number of pulses potentially included in the histogram (pulses are counted if they are in the central 20 m of each segment, even if no PE from the pulse are selected).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
pulse_count
(Type is String)
-
fullnamepath:
/gt3l/residual_histogram/pulse_count
(Type is String)
-
coordinates:
gt3l_residual_histogram_delta_time gt3l_residual_histogram_lat_mean gt3l_residual_histogram_lon_mean
(Type is String)
gt3l_residual_histogram_lon_mean[
/gt3l_residual_histogram_delta_time=
0..5838]
(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude Mean
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Mean longitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
lon_mean
(Type is String)
-
fullnamepath:
/gt3l/residual_histogram/lon_mean
(Type is String)
-
coordinates:
gt3l_residual_histogram_delta_time gt3l_residual_histogram_lat_mean
(Type is String)
gt3l_segment_quality_record_number[
/gt3l_segment_quality_delta_time=
0..62757]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
long_name:
Land Ice Height Index
(Type is String)
-
description:
For those segments that have adequate signal strength, this parameter gives the record for the pair within the other groups in the granule.
(Type is String)
-
source:
section 4.2
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
origname:
record_number
(Type is String)
-
fullnamepath:
/gt3l/segment_quality/record_number
(Type is String)
-
coordinates:
gt3l_segment_quality_delta_time gt3l_segment_quality_reference_pt_lat gt3l_segment_quality_reference_pt_lon
(Type is String)
gt3l_segment_quality_reference_pt_lat[
/gt3l_segment_quality_delta_time=
0..62757]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
long_name:
Latitude
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Latitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
contentType:
referenceInformation
(Type is String)
-
origname:
reference_pt_lat
(Type is String)
-
fullnamepath:
/gt3l/segment_quality/reference_pt_lat
(Type is String)
-
coordinates:
gt3l_segment_quality_delta_time gt3l_segment_quality_reference_pt_lon
(Type is String)
gt3l_segment_quality_reference_pt_lon[
/gt3l_segment_quality_delta_time=
0..62757]
(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Longitude
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Longitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
reference_pt_lon
(Type is String)
-
fullnamepath:
/gt3l/segment_quality/reference_pt_lon
(Type is String)
-
coordinates:
gt3l_segment_quality_delta_time gt3l_segment_quality_reference_pt_lat
(Type is String)
gt3l_segment_quality_segment_id[
/gt3l_segment_quality_delta_time=
0..62757]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number corresponding to the second of two ATL03 segments in the ATL06 segment, counted from the RGT equator crossing
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt3l/segment_quality/segment_id
(Type is String)
-
coordinates:
gt3l_segment_quality_delta_time gt3l_segment_quality_reference_pt_lat gt3l_segment_quality_reference_pt_lon
(Type is String)
gt3l_segment_quality_signal_selection_source[
/gt3l_segment_quality_delta_time=
0..62757]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
fullnamepath:
/gt3l/segment_quality/signal_selection_source
(Type is String)
-
coordinates:
gt3l_segment_quality_delta_time gt3l_segment_quality_reference_pt_lat gt3l_segment_quality_reference_pt_lon
(Type is String)
gt3l_segment_quality_signal_selection_status_signal_selection_status_all[
/gt3l_segment_quality_delta_time=
0..62757]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Status Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using all ATL03-flagged PEs. 0=Signal selection succeeded using all ATL03-flagged PEs (or algorthm not attempted); 1=Signal selection using all ATL03-flagged PEs failed the 20-meter-spread test; 2=Signal selection using all ATL03-flagged PEs failed the 10-photon-count test; 3=Signal selection using all ATL03-flagged PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_all
(Type is String)
-
fullnamepath:
/gt3l/segment_quality/signal_selection_status/signal_selection_status_all
(Type is String)
-
coordinates:
gt3l_segment_quality_delta_time gt3l_segment_quality_reference_pt_lat gt3l_segment_quality_reference_pt_lon
(Type is String)
gt3l_segment_quality_signal_selection_status_signal_selection_status_backup[
/gt3l_segment_quality_delta_time=
0..62757]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Backup Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using the backup signal finder. 0=Signal selection succeeded using the backup signal finder after centering the window on flagged PE (or backup signal finder not attempted); 1=Signal selection succeeded using the backup signal finder after searching for the strongest-signal window using four adjacent ATL03 segments; 2=Signal selection using the backup signal finder failed the 20-meter spread test; 3=Signal selection using the backup signal finder failed the 10-photon count test; 4=Signal selection using the backup signal finder failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_widen failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3, 4
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
4
(Type is Int8)
-
origname:
signal_selection_status_backup
(Type is String)
-
fullnamepath:
/gt3l/segment_quality/signal_selection_status/signal_selection_status_backup
(Type is String)
-
coordinates:
gt3l_segment_quality_delta_time gt3l_segment_quality_reference_pt_lat gt3l_segment_quality_reference_pt_lon
(Type is String)
gt3l_segment_quality_signal_selection_status_signal_selection_status_confident[
/gt3l_segment_quality_delta_time=
0..62757]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Confident Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using low or better PEs. 0=Signal selection succeeded using ATL03 low-or-better confidence PEs; 1=Signal selection using ATL03 low-or-better confidence PEs failed the 20-meter-spread test; 2=Signal selection using ATL03 low-or-better confidence PEs failed the 10-photon-count test; 3=Signal selection using ATL03 low-or-better confidence PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_confident
(Type is String)
-
fullnamepath:
/gt3l/segment_quality/signal_selection_status/signal_selection_status_confident
(Type is String)
-
coordinates:
gt3l_segment_quality_delta_time gt3l_segment_quality_reference_pt_lat gt3l_segment_quality_reference_pt_lon
(Type is String)
gt2l_land_ice_segments_sigma_geo_h[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Vertical Geolocation Error
(Type is String)
-
description:
Total vertical geolocation error due to PPD and POD, including the effects of horizontal geolocation error on the segment vertical error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
origname:
sigma_geo_h
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/sigma_geo_h
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_h_li_sigma[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Expected RMS segment misfit
(Type is String)
-
description:
Propagated error due to sampling error and FPB correction from the land ice algorithm
(Type is String)
-
source:
section 4.4
(Type is String)
-
origname:
h_li_sigma
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/h_li_sigma
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_h_mean[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Height Mean
(Type is String)
-
description:
Mean surface height, not corrected for first-photon bias or pulse truncation.
(Type is String)
-
source:
ATL06 ATBD
(Type is String)
-
origname:
h_mean
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/h_mean
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_signal_selection_source[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/signal_selection_source
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_snr[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
SNR
(Type is String)
-
description:
Signal-to-noise ratio in the final refined window
(Type is String)
-
source:
section 3.6.2
(Type is String)
-
origname:
snr
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/snr
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_h_robust_sprd[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Robust Spread
(Type is String)
-
description:
RDE of misfit between PE heights and the along-track segment fit.
(Type is String)
-
source:
section 3.6.3
(Type is String)
-
origname:
h_robust_sprd
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/h_robust_sprd
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_n_seg_pulses[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int32)
-
attributes
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Number potential segment pulses
(Type is String)
-
description:
The number of pulses potentially included in the segment
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
_FillValue:
2147483647
(Type is Int32)
-
units:
counts
(Type is String)
-
origname:
n_seg_pulses
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/n_seg_pulses
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_dh_fit_dx_sigma[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters/meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Sigma of Along Track Slope
(Type is String)
-
description:
Propagated error in the along-track segment slope
(Type is String)
-
source:
section 3.6.4
(Type is String)
-
origname:
dh_fit_dx_sigma
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/dh_fit_dx_sigma
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_snr_significance[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
SNR Significance
(Type is String)
-
description:
Probability that signal-finding routine would converge to at least the observed SNR for a random-noise input. Small values indicate a small likelihood of a surface-detection blunder.
(Type is String)
-
source:
section 3.6.2
(Type is String)
-
origname:
snr_significance
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/snr_significance
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_h_expected_rms[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Expected RMS misfit
(Type is String)
-
description:
Expected RMS misfit between PE heights and along-track segment fit
(Type is String)
-
source:
section 3.6.3
(Type is String)
-
origname:
h_expected_rms
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/h_expected_rms
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_dh_fit_dy[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters/meters
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Across Track Slope
(Type is String)
-
description:
Across track slope from segment fits to weak and strong beam; the same slope is reported for both laser beams in each pair
(Type is String)
-
source:
section 3.7
(Type is String)
-
origname:
dh_fit_dy
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/dh_fit_dy
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_sigma_h_mean[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Height Error
(Type is String)
-
description:
Propagated height error due to PE-height sampling error for height from the along-track fit, not including geolocation-induced error
(Type is String)
-
source:
section 3.6.4
(Type is String)
-
origname:
sigma_h_mean
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/sigma_h_mean
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_h_rms_misfit[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
RMS Misfit
(Type is String)
-
description:
RMS misfit between PE heights and along- track segment fit
(Type is String)
-
source:
section 3.6.3
(Type is String)
-
origname:
h_rms_misfit
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/h_rms_misfit
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_signal_selection_source_status[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source Status
(Type is String)
-
description:
Indicates the status of the last signal selection algorithm attempted (see signal_selection_source). The definition of flag is different for each source and are defined in eacoh of the signal_selection_status flags. (See Land Ice ATBD Table 3-2).
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
valid_min:
0
(Type is Int8)
-
valid_max:
4
(Type is Int8)
-
origname:
signal_selection_source_status
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/signal_selection_source_status
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_dh_fit_dx[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters/meters
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Along Track Slope
(Type is String)
-
description:
Along-track slope from along-track segment fit
(Type is String)
-
source:
section 3.3.5.1
(Type is String)
-
origname:
dh_fit_dx
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/dh_fit_dx
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_n_fit_photons[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int32)
-
attributes
-
_FillValue:
2147483647
(Type is Int32)
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Number of Photons in Fit
(Type is String)
-
description:
Number of PEs used in determining h_li, after editing
(Type is String)
-
source:
section 3.3.5.2
(Type is String)
-
origname:
n_fit_photons
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/n_fit_photons
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_fit_statistics_w_surface_window_final[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Surface Window Width
(Type is String)
-
description:
Width of the surface window, top to bottom
(Type is String)
-
source:
section 3.3.5.2
(Type is String)
-
origname:
w_surface_window_final
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/fit_statistics/w_surface_window_final
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_longitude[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Longitude of segment center, , WGS84, East=+
(Type is String)
-
source:
section 3.10
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
longitude
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/longitude
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude
(Type is String)
gt2l_land_ice_segments_latitude[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Latitude
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Latitude of segment center, WGS84, North=+,
(Type is String)
-
source:
section 3.10
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
origname:
latitude
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/latitude
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_h_li[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Land Ice height
(Type is String)
-
description:
Standard land-ice segment height determined by land ice algorithm, corrected for first-photon bias, representing the median- based height of the selected PEs
(Type is String)
-
source:
section 4.4
(Type is String)
-
origname:
h_li
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/h_li
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_ground_track_ref_azimuth[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
radians
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Azimuth
(Type is String)
-
description:
The direction, eastwards from north, of the laser beam vector as seen by an observer at the laser ground spot viewing toward the spacecraft (i.e., the vector from the ground to the spacecraft).
(Type is String)
-
source:
ATL03g, Section 3.3
(Type is String)
-
origname:
ref_azimuth
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/ground_track/ref_azimuth
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_ground_track_seg_azimuth[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Segment Azimuth
(Type is String)
-
description:
Azimuth of the pair-track, east of local north.
(Type is String)
-
source:
section 3.1.2.2
(Type is String)
-
origname:
seg_azimuth
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/ground_track/seg_azimuth
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_ground_track_sigma_geo_at[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Across Track Geolocation Error
(Type is String)
-
description:
Along-track component of the geolocation error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
sigma_geo_at
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/ground_track/sigma_geo_at
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_ground_track_sigma_geo_xt[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Along Track Geolocation Error
(Type is String)
-
description:
Across-track component of the geolocation error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
origname:
sigma_geo_xt
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/ground_track/sigma_geo_xt
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_ground_track_ref_coelv[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
radians
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Co-elevation
(Type is String)
-
description:
Coelevation (CE) is direction from vertical of the laser beam as seen by an observer located at the laser ground spot.
(Type is String)
-
source:
ATL03g, Section 3.3
(Type is String)
-
origname:
ref_coelv
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/ground_track/ref_coelv
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_ground_track_x_atc[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float64)
-
attributes
-
_FillValue:
1.7976931348623157e+308
(Type is Float64)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
X Along Track
(Type is String)
-
description:
The along-track x-coordinate of the segment, measured parallel to the RGT, measured from the ascending node of the equatorial crossing of a given RGT.
(Type is String)
-
source:
section 3.1.2.2
(Type is String)
-
origname:
x_atc
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/ground_track/x_atc
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_ground_track_y_atc[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
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(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Y Along Track
(Type is String)
-
description:
Along-track y coordinate of the segment, relative to the RGT, measured along the perpendicular to the RGT, positive to the right of the RGT.
(Type is String)
-
source:
section 3.1.2.2
(Type is String)
-
origname:
y_atc
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/ground_track/y_atc
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_dem_dem_flag[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
DEM Source Flag
(Type is String)
-
description:
Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS, 4=Antarctic.
(Type is String)
-
source:
DTU10/GMTED/GIMP
(Type is String)
-
flag_meanings:
none gimp gmted mss antarctic
(Type is String)
-
flag_values:
0, 1, 2, 3, 4
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
4
(Type is Int8)
-
origname:
dem_flag
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/dem/dem_flag
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_dem_dem_h[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
DEM Height
(Type is String)
-
description:
Height of the DEM, interpolated by cubic-spline interpolation in the DEM coordinate system to the PE location.
(Type is String)
-
source:
DTU10/GMTED/GIMP
(Type is String)
-
origname:
dem_h
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/dem/dem_h
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_dem_geoid_h[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Geoid Height
(Type is String)
-
description:
Geoid height above WGS-84 reference ellipsoid (range -107 to 86m),
(Type is String)
-
source:
EGM2008
(Type is String)
-
origname:
geoid_h
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/dem/geoid_h
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_msw_flag[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Multiple Scattering Warning Flag
(Type is String)
-
description:
Combined flag indicating the risks of severe multiple scattering. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight.
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5
(Type is String)
-
flag_values:
-1, 0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
-1
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
origname:
msw_flag
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/msw_flag
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_bsnow_conf[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow confidence
(Type is String)
-
description:
Confidence flag for presence of blowing snow
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_conf
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/bsnow_conf
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_bsnow_h[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow Layer Top Height
(Type is String)
-
description:
Blowing snow layer top height
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_h
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/bsnow_h
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_tide_ocean[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Ocean Tide
(Type is String)
-
description:
Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.1
(Type is String)
-
origname:
tide_ocean
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/tide_ocean
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_tide_earth[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Earth Tide
(Type is String)
-
description:
Solid Earth Tides
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.3
(Type is String)
-
origname:
tide_earth
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/tide_earth
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_solar_azimuth[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar azimuth
(Type is String)
-
description:
The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
(Type is String)
-
source:
ATL03
(Type is String)
-
origname:
solar_azimuth
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/solar_azimuth
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_r_eff[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Effective uncorrected reflectance
(Type is String)
-
description:
Effective reflectance, uncorrected for atmospheric effects.
(Type is String)
-
source:
section 3.1.5.4
(Type is String)
-
origname:
r_eff
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/r_eff
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_dac[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Dynamic Atmosphere Correction
(Type is String)
-
description:
Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect.
(Type is String)
-
source:
ATL03, 6.3.2
(Type is String)
-
origname:
dac
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/dac
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_tide_load[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Load Tide
(Type is String)
-
description:
Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.4
(Type is String)
-
origname:
tide_load
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/tide_load
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_bsnow_od[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Blowing snow OD
(Type is String)
-
description:
Optical thickness of blowing snow layer.
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_od
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/bsnow_od
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_cloud_flg_atm[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Cloud flag
(Type is String)
-
description:
Indicates the probability of clouds based on backscatter measurements
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
no yes
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
cloud_flg_atm
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/cloud_flg_atm
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_solar_elevation[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar elevation
(Type is String)
-
description:
Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low-precision value, with approximately TBD degree accuracy.
(Type is String)
-
source:
ATL03
(Type is String)
-
valid_min:
-90.00000000
(Type is Float32)
-
valid_max:
90.00000000
(Type is Float32)
-
origname:
solar_elevation
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/solar_elevation
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_tide_pole[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Solid Earth Pole Tide
(Type is String)
-
description:
Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.5
(Type is String)
-
origname:
tide_pole
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/tide_pole
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_e_bckgrd[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Expected background count rate
(Type is String)
-
description:
Expected background count rate based on sun angle, surface slope, for unit surface reflectance
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
e_bckgrd
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/e_bckgrd
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_cloud_flg_asr[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
cloud flag confidence
(Type is String)
-
description:
Indicates cloud attenuation as calculated from the apparent surface reflectance, assuming a white snow surface
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence
(Type is String)
-
flag_values:
0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
origname:
cloud_flg_asr
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/cloud_flg_asr
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_bckgrd[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Background count rate
(Type is String)
-
description:
Background count rate, derived from the ATL03 50-shot-average, interpolated to the segment center.
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
bckgrd
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/bckgrd
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_geophysical_neutat_delay_total[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Total Neutral Atmospheric Delay
(Type is String)
-
description:
Total neutral atmosphere delay correction (wet+dry).
(Type is String)
-
source:
ATL03a ATBD
(Type is String)
-
origname:
neutat_delay_total
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/geophysical/neutat_delay_total
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_atl06_quality_summary[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
ATL06_Quality_Summary
(Type is String)
-
description:
The ATL06_quality_summary parameter indicates the best-quality subset of all ATL06 data. A zero in this parameter implies that no data-quality tests have found a problem with the segment, a one implies that some potential problem has been found. Users who select only segments with zero values for this flag can be relatively certain of obtaining high-quality data, but will likely miss a significant fraction of usable data, particularly in cloudy, rough, or low-surface-reflectance conditions.
(Type is String)
-
source:
section 4.3
(Type is String)
-
flag_meanings:
best_quality potential_problem
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
atl06_quality_summary
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/atl06_quality_summary
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_segment_id[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Int32)
-
attributes
-
_FillValue:
0
(Type is Int32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number, counting from the equator. Equal to the segment_id for the second of the two 20m ATL03 segments included in the 40m ATL06 segment
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/segment_id
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_bias_correction_fpb_mean_corr[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
first photon bias mean correction
(Type is String)
-
description:
Estimated first-photon bias (fpb) correction to mean segment height
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/bias_correction/fpb_mean_corr
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_bias_correction_fpb_mean_corr_sigma[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb mean corr sigma
(Type is String)
-
description:
Estimated error in fpb_mean_corr
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr_sigma
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/bias_correction/fpb_mean_corr_sigma
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_bias_correction_fpb_med_corr[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr
(Type is String)
-
description:
First-photon-bias correction giving the difference between the mean segment height and the corrected median height
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/bias_correction/fpb_med_corr
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_bias_correction_fpb_med_corr_sigma[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr sigma
(Type is String)
-
description:
Estimated error in fpb_med_corr
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr_sigma
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/bias_correction/fpb_med_corr_sigma
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_bias_correction_fpb_n_corr[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
counts
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb number photons corr
(Type is String)
-
description:
Estimated window photon count after first-photon-bias correction
(Type is String)
-
source:
section 4.3.3.3
(Type is String)
-
origname:
fpb_n_corr
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/bias_correction/fpb_n_corr
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_bias_correction_tx_mean_corr[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape mean correction
(Type is String)
-
description:
Estimate of the difference between the mean of the full-waveform transmit-pulse and the mean of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_mean_corr
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/bias_correction/tx_mean_corr
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_bias_correction_med_r_fit[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
mean median residual
(Type is String)
-
description:
Difference between uncorrected mean and median of linear fit residuals
(Type is String)
-
source:
section 3.3.5
(Type is String)
-
origname:
med_r_fit
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/bias_correction/med_r_fit
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_land_ice_segments_bias_correction_tx_med_corr[
/gt2l_land_ice_segments_delta_time=
0..58592]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape median correction
(Type is String)
-
description:
Estimate of the difference between the median of the full-waveform transmit-pulse mean and the median of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_med_corr
(Type is String)
-
fullnamepath:
/gt2l/land_ice_segments/bias_correction/tx_med_corr
(Type is String)
-
coordinates:
gt2l_land_ice_segments_delta_time gt2l_land_ice_segments_latitude gt2l_land_ice_segments_longitude
(Type is String)
gt2l_residual_histogram_count[
/gt2l_residual_histogram_delta_time=
0..5851]
[
/gt2l_residual_histogram_dh=
0..999]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Bin Counts
(Type is String)
-
description:
Residual count in 1-cm bins, for PE within 10 (horizontal) m of segment centers for each histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
count
(Type is String)
-
fullnamepath:
/gt2l/residual_histogram/count
(Type is String)
-
coordinates:
gt2l_residual_histogram_delta_time gt2l_residual_histogram_lat_mean gt2l_residual_histogram_lon_mean
(Type is String)
gt2l_residual_histogram_lat_mean[
/gt2l_residual_histogram_delta_time=
0..5851]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Latitude Mean
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Mean latitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
origname:
lat_mean
(Type is String)
-
fullnamepath:
/gt2l/residual_histogram/lat_mean
(Type is String)
-
coordinates:
gt2l_residual_histogram_delta_time gt2l_residual_histogram_lon_mean
(Type is String)
gt2l_residual_histogram_bckgrd_per_bin[
/gt2l_residual_histogram_delta_time=
0..5851]
(Type is Float32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Expected background PEs
(Type is String)
-
description:
Number of background PE expected for the bins in each column of the histogram based on the observed background rate (bckgrd).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
bckgrd_per_bin
(Type is String)
-
fullnamepath:
/gt2l/residual_histogram/bckgrd_per_bin
(Type is String)
-
coordinates:
gt2l_residual_histogram_delta_time gt2l_residual_histogram_lat_mean gt2l_residual_histogram_lon_mean
(Type is String)
gt2l_residual_histogram_x_atc_mean[
/gt2l_residual_histogram_delta_time=
0..5851]
(Type is Float64)
-
attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Along Track Coordinate Mean
(Type is String)
-
description:
Mean along-track coordinate of the segments included in the histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
x_atc_mean
(Type is String)
-
fullnamepath:
/gt2l/residual_histogram/x_atc_mean
(Type is String)
-
coordinates:
gt2l_residual_histogram_delta_time gt2l_residual_histogram_lat_mean gt2l_residual_histogram_lon_mean
(Type is String)
gt2l_residual_histogram_segment_id_list[
/gt2l_residual_histogram_delta_time=
0..5851]
[
/gt2l_residual_histogram_ds_segment_id=
0..9]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Segment ID List
(Type is String)
-
description:
Segments ids included in each column of the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
_FillValue:
2147483647
(Type is Int32)
-
origname:
segment_id_list
(Type is String)
-
fullnamepath:
/gt2l/residual_histogram/segment_id_list
(Type is String)
-
coordinates:
gt2l_residual_histogram_delta_time gt2l_residual_histogram_lat_mean gt2l_residual_histogram_lon_mean
(Type is String)
gt2l_residual_histogram_pulse_count[
/gt2l_residual_histogram_delta_time=
0..5851]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Number of Histogram Segment Pulses
(Type is String)
-
description:
Number of pulses potentially included in the histogram (pulses are counted if they are in the central 20 m of each segment, even if no PE from the pulse are selected).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
pulse_count
(Type is String)
-
fullnamepath:
/gt2l/residual_histogram/pulse_count
(Type is String)
-
coordinates:
gt2l_residual_histogram_delta_time gt2l_residual_histogram_lat_mean gt2l_residual_histogram_lon_mean
(Type is String)
gt2l_residual_histogram_lon_mean[
/gt2l_residual_histogram_delta_time=
0..5851]
(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude Mean
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Mean longitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
lon_mean
(Type is String)
-
fullnamepath:
/gt2l/residual_histogram/lon_mean
(Type is String)
-
coordinates:
gt2l_residual_histogram_delta_time gt2l_residual_histogram_lat_mean
(Type is String)
gt2l_segment_quality_record_number[
/gt2l_segment_quality_delta_time=
0..62773]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
long_name:
Land Ice Height Index
(Type is String)
-
description:
For those segments that have adequate signal strength, this parameter gives the record for the pair within the other groups in the granule.
(Type is String)
-
source:
section 4.2
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
origname:
record_number
(Type is String)
-
fullnamepath:
/gt2l/segment_quality/record_number
(Type is String)
-
coordinates:
gt2l_segment_quality_delta_time gt2l_segment_quality_reference_pt_lat gt2l_segment_quality_reference_pt_lon
(Type is String)
gt2l_segment_quality_reference_pt_lat[
/gt2l_segment_quality_delta_time=
0..62773]
(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
long_name:
Latitude
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Latitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
contentType:
referenceInformation
(Type is String)
-
origname:
reference_pt_lat
(Type is String)
-
fullnamepath:
/gt2l/segment_quality/reference_pt_lat
(Type is String)
-
coordinates:
gt2l_segment_quality_delta_time gt2l_segment_quality_reference_pt_lon
(Type is String)
gt2l_segment_quality_reference_pt_lon[
/gt2l_segment_quality_delta_time=
0..62773]
(Type is Float64)
-
attributes
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Longitude
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Longitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
reference_pt_lon
(Type is String)
-
fullnamepath:
/gt2l/segment_quality/reference_pt_lon
(Type is String)
-
coordinates:
gt2l_segment_quality_delta_time gt2l_segment_quality_reference_pt_lat
(Type is String)
gt2l_segment_quality_segment_id[
/gt2l_segment_quality_delta_time=
0..62773]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number corresponding to the second of two ATL03 segments in the ATL06 segment, counted from the RGT equator crossing
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt2l/segment_quality/segment_id
(Type is String)
-
coordinates:
gt2l_segment_quality_delta_time gt2l_segment_quality_reference_pt_lat gt2l_segment_quality_reference_pt_lon
(Type is String)
gt2l_segment_quality_signal_selection_source[
/gt2l_segment_quality_delta_time=
0..62773]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
fullnamepath:
/gt2l/segment_quality/signal_selection_source
(Type is String)
-
coordinates:
gt2l_segment_quality_delta_time gt2l_segment_quality_reference_pt_lat gt2l_segment_quality_reference_pt_lon
(Type is String)
gt2l_segment_quality_signal_selection_status_signal_selection_status_all[
/gt2l_segment_quality_delta_time=
0..62773]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Status Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using all ATL03-flagged PEs. 0=Signal selection succeeded using all ATL03-flagged PEs (or algorthm not attempted); 1=Signal selection using all ATL03-flagged PEs failed the 20-meter-spread test; 2=Signal selection using all ATL03-flagged PEs failed the 10-photon-count test; 3=Signal selection using all ATL03-flagged PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_all
(Type is String)
-
fullnamepath:
/gt2l/segment_quality/signal_selection_status/signal_selection_status_all
(Type is String)
-
coordinates:
gt2l_segment_quality_delta_time gt2l_segment_quality_reference_pt_lat gt2l_segment_quality_reference_pt_lon
(Type is String)
gt2l_segment_quality_signal_selection_status_signal_selection_status_backup[
/gt2l_segment_quality_delta_time=
0..62773]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Backup Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using the backup signal finder. 0=Signal selection succeeded using the backup signal finder after centering the window on flagged PE (or backup signal finder not attempted); 1=Signal selection succeeded using the backup signal finder after searching for the strongest-signal window using four adjacent ATL03 segments; 2=Signal selection using the backup signal finder failed the 20-meter spread test; 3=Signal selection using the backup signal finder failed the 10-photon count test; 4=Signal selection using the backup signal finder failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_widen failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3, 4
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
4
(Type is Int8)
-
origname:
signal_selection_status_backup
(Type is String)
-
fullnamepath:
/gt2l/segment_quality/signal_selection_status/signal_selection_status_backup
(Type is String)
-
coordinates:
gt2l_segment_quality_delta_time gt2l_segment_quality_reference_pt_lat gt2l_segment_quality_reference_pt_lon
(Type is String)
gt2l_segment_quality_signal_selection_status_signal_selection_status_confident[
/gt2l_segment_quality_delta_time=
0..62773]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Confident Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using low or better PEs. 0=Signal selection succeeded using ATL03 low-or-better confidence PEs; 1=Signal selection using ATL03 low-or-better confidence PEs failed the 20-meter-spread test; 2=Signal selection using ATL03 low-or-better confidence PEs failed the 10-photon-count test; 3=Signal selection using ATL03 low-or-better confidence PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_confident
(Type is String)
-
fullnamepath:
/gt2l/segment_quality/signal_selection_status/signal_selection_status_confident
(Type is String)
-
coordinates:
gt2l_segment_quality_delta_time gt2l_segment_quality_reference_pt_lat gt2l_segment_quality_reference_pt_lon
(Type is String)
ancillary_data_release[
/FakeDim0=
0..0]
(Type is String)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Release Number
(Type is String)
-
description:
Release number of the granule. The release number is incremented when the software or ancillary data used to create the granule has been changed.
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
release
(Type is String)
-
fullnamepath:
/ancillary_data/release
(Type is String)
ancillary_data_end_geoseg[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Ending Geolocation Segment
(Type is String)
-
description:
The ending geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
end_geoseg
(Type is String)
-
fullnamepath:
/ancillary_data/end_geoseg
(Type is String)
ancillary_data_version[
/FakeDim0=
0..0]
(Type is String)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Version
(Type is String)
-
description:
Version number of this granule within the release. It is a sequential number corresponding to the number of times the granule has been reprocessed for the current release.
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
version
(Type is String)
-
fullnamepath:
/ancillary_data/version
(Type is String)
ancillary_data_end_region[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Ending Region
(Type is String)
-
description:
The ending product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
end_region
(Type is String)
-
fullnamepath:
/ancillary_data/end_region
(Type is String)
ancillary_data_atlas_sdp_gps_epoch[
/FakeDim0=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds since 1980-01-06T00:00:00.000000Z
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
ATLAS Epoch Offset
(Type is String)
-
description:
Number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS Standard Data Product (SDP) epoch (2018-01-01:T00.00.00.000000 UTC). Add this value to delta time parameters to compute full gps_seconds (relative to the GPS epoch) for each data point.
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
atlas_sdp_gps_epoch
(Type is String)
-
fullnamepath:
/ancillary_data/atlas_sdp_gps_epoch
(Type is String)
ancillary_data_end_rgt[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Ending Reference Groundtrack
(Type is String)
-
description:
The ending reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle.
(Type is String)
-
source:
Derived
(Type is String)
-
valid_min:
1
(Type is Int32)
-
valid_max:
1387
(Type is Int32)
-
origname:
end_rgt
(Type is String)
-
fullnamepath:
/ancillary_data/end_rgt
(Type is String)
ancillary_data_end_delta_time[
/FakeDim0=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
ATLAS End Time (Actual)
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Number of GPS seconds since the ATLAS SDP epoch at the last data point in the file. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
end_delta_time
(Type is String)
-
fullnamepath:
/ancillary_data/end_delta_time
(Type is String)
ancillary_data_end_orbit[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Ending Orbit Number
(Type is String)
-
description:
The ending orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
end_orbit
(Type is String)
-
fullnamepath:
/ancillary_data/end_orbit
(Type is String)
ancillary_data_start_cycle[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Starting Cycle
(Type is String)
-
description:
The starting cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission.
(Type is String)
-
source:
Derived
(Type is String)
-
valid_min:
0
(Type is Int32)
-
valid_max:
99
(Type is Int32)
-
origname:
start_cycle
(Type is String)
-
fullnamepath:
/ancillary_data/start_cycle
(Type is String)
ancillary_data_data_end_utc[
/FakeDim0=
0..0]
(Type is String)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
End UTC Time of Granule (CCSDS-A, Actual)
(Type is String)
-
description:
UTC (in CCSDS-A format) of the last data point within the granule.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
data_end_utc
(Type is String)
-
fullnamepath:
/ancillary_data/data_end_utc
(Type is String)
ancillary_data_control[
/FakeDim0=
0..0]
(Type is String)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Control File
(Type is String)
-
description:
PGE-specific control file used to generate this granule. To re-use, replace breaks (BR) with linefeeds.
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
control
(Type is String)
-
fullnamepath:
/ancillary_data/control
(Type is String)
ancillary_data_start_gpssow[
/FakeDim0=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Start GPS SOW of Granule (Actual)
(Type is String)
-
description:
GPS seconds-of-week of the first data point in the granule.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
start_gpssow
(Type is String)
-
fullnamepath:
/ancillary_data/start_gpssow
(Type is String)
ancillary_data_granule_end_utc[
/FakeDim0=
0..0]
(Type is String)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
End UTC Time of Granule (CCSDS-A, Requested)
(Type is String)
-
description:
Requested end time (in UTC CCSDS-A) of this granule.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
granule_end_utc
(Type is String)
-
fullnamepath:
/ancillary_data/granule_end_utc
(Type is String)
ancillary_data_end_cycle[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Ending Cycle
(Type is String)
-
description:
The ending cycle number associated with the data contained within this granule. The cycle number is the counter of the number of 91-day repeat cycles completed by the mission.
(Type is String)
-
source:
Derived
(Type is String)
-
valid_min:
0
(Type is Int32)
-
valid_max:
99
(Type is Int32)
-
origname:
end_cycle
(Type is String)
-
fullnamepath:
/ancillary_data/end_cycle
(Type is String)
ancillary_data_granule_start_utc[
/FakeDim0=
0..0]
(Type is String)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Start UTC Time of Granule (CCSDS-A, Requested)
(Type is String)
-
description:
Requested start time (in UTC CCSDS-A) of this granule.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
granule_start_utc
(Type is String)
-
fullnamepath:
/ancillary_data/granule_start_utc
(Type is String)
ancillary_data_start_delta_time[
/FakeDim0=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds since 2018-01-01
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
ATLAS Start Time (Actual)
(Type is String)
-
standard_name:
time
(Type is String)
-
description:
Number of GPS seconds since the ATLAS SDP epoch at the first data point in the file. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
start_delta_time
(Type is String)
-
fullnamepath:
/ancillary_data/start_delta_time
(Type is String)
ancillary_data_start_geoseg[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Starting Geolocation Segment
(Type is String)
-
description:
The starting geolocation segment number associated with the data contained within this granule. ICESat granule geographic regions are further refined by geolocation segments. During the geolocation process, a geolocation segment is created approximately every 20m from the start of the orbit to the end. The geolocation segments help align the ATLAS strong a weak beams and provide a common segment length for the L2 and higher products. The geolocation segment indices differ slightly from orbit-to-orbit because of the irregular shape of the Earth. The geolocation segment indices on ATL01 and ATL02 are only approximate because beams have not been aligned at the time of their creation.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
start_geoseg
(Type is String)
-
fullnamepath:
/ancillary_data/start_geoseg
(Type is String)
ancillary_data_start_orbit[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Starting Orbit Number
(Type is String)
-
description:
The starting orbit number associated with the data contained within this granule. The orbit number increments each time the spacecraft completes a full orbit of the Earth.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
start_orbit
(Type is String)
-
fullnamepath:
/ancillary_data/start_orbit
(Type is String)
ancillary_data_data_start_utc[
/FakeDim0=
0..0]
(Type is String)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Start UTC Time of Granule (CCSDS-A, Actual)
(Type is String)
-
description:
UTC (in CCSDS-A format) of the first data point within the granule.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
data_start_utc
(Type is String)
-
fullnamepath:
/ancillary_data/data_start_utc
(Type is String)
ancillary_data_end_gpsweek[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
weeks from 1980-01-06
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Ending GPSWeek of Granule (Actual)
(Type is String)
-
description:
GPS week number of the last data point in the granule.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
end_gpsweek
(Type is String)
-
fullnamepath:
/ancillary_data/end_gpsweek
(Type is String)
ancillary_data_start_rgt[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Starting Reference Groundtrack
(Type is String)
-
description:
The starting reference groundtrack (RGT) number associated with the data contained within this granule. There are 1387 reference groundtrack in the ICESat-2 repeat orbit. The reference groundtrack increments each time the spacecraft completes a full orbit of the Earth and resets to 1 each time the spacecraft completes a full cycle.
(Type is String)
-
source:
Derived
(Type is String)
-
valid_min:
1
(Type is Int32)
-
valid_max:
1387
(Type is Int32)
-
origname:
start_rgt
(Type is String)
-
fullnamepath:
/ancillary_data/start_rgt
(Type is String)
ancillary_data_end_gpssow[
/FakeDim0=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Ending GPS SOW of Granule (Actual)
(Type is String)
-
description:
GPS seconds-of-week of the last data point in the granule.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
end_gpssow
(Type is String)
-
fullnamepath:
/ancillary_data/end_gpssow
(Type is String)
ancillary_data_land_ice_rbin_width[
/FakeDim0=
0..0]
(Type is Float32)
-
attributes
-
units:
meters
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Bin Size
(Type is String)
-
description:
Residual histogram bin size
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
rbin_width
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/rbin_width
(Type is String)
ancillary_data_land_ice_sigma_beam[
/FakeDim0=
0..0]
(Type is Float32)
-
attributes
-
units:
meters
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Sigma of Gaussian Footprint
(Type is String)
-
description:
Spatial sigma of the Gaussian footprint (m)
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
sigma_beam
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/sigma_beam
(Type is String)
ancillary_data_land_ice_fit_maxiter[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Maximum Iterations of Fit
(Type is String)
-
description:
Maximum number of iterations in at_seg_fit
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
fit_maxiter
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/fit_maxiter
(Type is String)
ancillary_data_land_ice_n_hist[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Number of Histogram Bins
(Type is String)
-
description:
Number of bins in a histogram
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
n_hist
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/n_hist
(Type is String)
ancillary_data_land_ice_min_gain_th[
/FakeDim0=
0..0]
(Type is Float32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
description:
Minimum estimated gain threshold (3.1.6)
(Type is String)
-
source:
Operations
(Type is String)
-
long_name:
Minimum Gain Threshold
(Type is String)
-
origname:
min_gain_th
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/min_gain_th
(Type is String)
ancillary_data_land_ice_maxiter[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
counts
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Maximum Iterations
(Type is String)
-
description:
Maximum number of iterations in tx_shape_corr
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
maxiter
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/maxiter
(Type is String)
ancillary_data_land_ice_n_sigmas[
/FakeDim0=
0..0]
(Type is Float32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Number of Sigmas
(Type is String)
-
description:
Multiplied by sigma_expected to get h_win
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
n_sigmas
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/n_sigmas
(Type is String)
ancillary_data_land_ice_dt_hist[
/FakeDim0=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Histogram Bin Size
(Type is String)
-
description:
Bin size for histograms (sec)
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
dt_hist
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/dt_hist
(Type is String)
ancillary_data_land_ice_sigma_tx[
/FakeDim0=
0..0]
(Type is Float32)
-
attributes
-
units:
seconds
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Duration of Transmit Pulse
(Type is String)
-
description:
Temporal duration of the transmit pulse (sec), calculated from the FWHM of the TEP waveform
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
sigma_tx
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/sigma_tx
(Type is String)
ancillary_data_land_ice_min_signal_conf[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Minimum Signal Confidence
(Type is String)
-
description:
Minimum signal confidence level for a photon to be considered valid.
(Type is String)
-
source:
Operations
(Type is String)
-
valid_min:
0
(Type is Int32)
-
valid_max:
4
(Type is Int32)
-
origname:
min_signal_conf
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/min_signal_conf
(Type is String)
ancillary_data_land_ice_t_dead[
/FakeDim0=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Dead-time
(Type is String)
-
description:
Dead-time for any channel in the detector (sec)
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
t_dead
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/t_dead
(Type is String)
ancillary_data_land_ice_min_n_sel[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Mininum Number of Photons
(Type is String)
-
description:
Minimum number of selected PEs in pe_select
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
min_n_sel
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/min_n_sel
(Type is String)
ancillary_data_land_ice_max_res_ids[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Max Segments
(Type is String)
-
description:
Maximum number of segment ids in each residual_histogram
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
max_res_ids
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/max_res_ids
(Type is String)
ancillary_data_land_ice_proc_interval[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
seconds
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Processing Interval
(Type is String)
-
description:
Processing interval in number of geolocation segments..
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
proc_interval
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/proc_interval
(Type is String)
ancillary_data_land_ice_fpb_maxiter[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Maximum Iterations for FPB
(Type is String)
-
description:
Maximum number of iterations in fpb_corr
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
fpb_maxiter
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/fpb_maxiter
(Type is String)
ancillary_data_land_ice_min_n_pe[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Minimum Photons
(Type is String)
-
description:
Minimum # PEs for fit
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
min_n_pe
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/min_n_pe
(Type is String)
ancillary_data_land_ice_win_nsig[
/FakeDim1=
0..1]
(Type is Float32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Sigma Est Multiplier
(Type is String)
-
description:
Multiplied by sigma_est to get dz_ph_win
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
win_nsig
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/win_nsig
(Type is String)
ancillary_data_land_ice_min_dist[
/FakeDim0=
0..0]
(Type is Float32)
-
attributes
-
units:
meters
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Minimum Distance
(Type is String)
-
description:
Min dist between first and last selected PEs
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
min_dist
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/min_dist
(Type is String)
ancillary_data_land_ice_nhist_bins[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Number of Bins
(Type is String)
-
description:
Number of bins in residual histogram
(Type is String)
-
source:
Operations
(Type is String)
-
origname:
nhist_bins
(Type is String)
-
fullnamepath:
/ancillary_data/land_ice/nhist_bins
(Type is String)
ancillary_data_qa_at_interval[
/FakeDim0=
0..0]
(Type is Float64)
-
attributes
-
units:
seconds/cell
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
QA Along-Track Interval
(Type is String)
-
description:
Statistics time interval for along-track QA data.
(Type is String)
-
source:
control
(Type is String)
-
origname:
qa_at_interval
(Type is String)
-
fullnamepath:
/ancillary_data/qa_at_interval
(Type is String)
ancillary_data_start_region[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Starting Region
(Type is String)
-
description:
The starting product-specific region number associated with the data contained within this granule. ICESat-2 data products are separated by geographic regions. The data contained within a specific region are the same for ATL01 and ATL02. ATL03 regions differ slightly because of different geolocation segment locations caused by the irregular shape of the Earth. The region indices for other products are completely independent.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
start_region
(Type is String)
-
fullnamepath:
/ancillary_data/start_region
(Type is String)
ancillary_data_start_gpsweek[
/FakeDim0=
0..0]
(Type is Int32)
-
attributes
-
units:
weeks from 1980-01-06
(Type is String)
-
contentType:
auxiliaryInformation
(Type is String)
-
long_name:
Start GPSWeek of Granule (Actual)
(Type is String)
-
description:
GPS week number of the first data point in the granule.
(Type is String)
-
source:
Derived
(Type is String)
-
origname:
start_gpsweek
(Type is String)
-
fullnamepath:
/ancillary_data/start_gpsweek
(Type is String)
gt3r_land_ice_segments_sigma_geo_h[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Vertical Geolocation Error
(Type is String)
-
description:
Total vertical geolocation error due to PPD and POD, including the effects of horizontal geolocation error on the segment vertical error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
origname:
sigma_geo_h
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/sigma_geo_h
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_h_li_sigma[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Expected RMS segment misfit
(Type is String)
-
description:
Propagated error due to sampling error and FPB correction from the land ice algorithm
(Type is String)
-
source:
section 4.4
(Type is String)
-
origname:
h_li_sigma
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/h_li_sigma
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_fit_statistics_h_mean[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Height Mean
(Type is String)
-
description:
Mean surface height, not corrected for first-photon bias or pulse truncation.
(Type is String)
-
source:
ATL06 ATBD
(Type is String)
-
origname:
h_mean
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/fit_statistics/h_mean
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_fit_statistics_signal_selection_source[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/fit_statistics/signal_selection_source
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_fit_statistics_snr[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
SNR
(Type is String)
-
description:
Signal-to-noise ratio in the final refined window
(Type is String)
-
source:
section 3.6.2
(Type is String)
-
origname:
snr
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/fit_statistics/snr
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_fit_statistics_h_robust_sprd[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Robust Spread
(Type is String)
-
description:
RDE of misfit between PE heights and the along-track segment fit.
(Type is String)
-
source:
section 3.6.3
(Type is String)
-
origname:
h_robust_sprd
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/fit_statistics/h_robust_sprd
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_fit_statistics_n_seg_pulses[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Int32)
-
attributes
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Number potential segment pulses
(Type is String)
-
description:
The number of pulses potentially included in the segment
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
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(Type is Int32)
-
units:
counts
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-
origname:
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(Type is String)
-
fullnamepath:
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(Type is String)
gt3r_land_ice_segments_fit_statistics_dh_fit_dx_sigma[
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attributes
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(Type is Float32)
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units:
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(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Sigma of Along Track Slope
(Type is String)
-
description:
Propagated error in the along-track segment slope
(Type is String)
-
source:
section 3.6.4
(Type is String)
-
origname:
dh_fit_dx_sigma
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt3r_land_ice_segments_fit_statistics_snr_significance[
/gt3r_land_ice_segments_delta_time=
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units:
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(Type is String)
-
contentType:
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-
long_name:
SNR Significance
(Type is String)
-
description:
Probability that signal-finding routine would converge to at least the observed SNR for a random-noise input. Small values indicate a small likelihood of a surface-detection blunder.
(Type is String)
-
source:
section 3.6.2
(Type is String)
-
origname:
snr_significance
(Type is String)
-
fullnamepath:
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-
contentType:
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long_name:
Expected RMS misfit
(Type is String)
-
description:
Expected RMS misfit between PE heights and along-track segment fit
(Type is String)
-
source:
section 3.6.3
(Type is String)
-
origname:
h_expected_rms
(Type is String)
-
fullnamepath:
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(Type is String)
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contentType:
physicalMeasurement
(Type is String)
-
long_name:
Across Track Slope
(Type is String)
-
description:
Across track slope from segment fits to weak and strong beam; the same slope is reported for both laser beams in each pair
(Type is String)
-
source:
section 3.7
(Type is String)
-
origname:
dh_fit_dy
(Type is String)
-
fullnamepath:
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contentType:
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long_name:
Height Error
(Type is String)
-
description:
Propagated height error due to PE-height sampling error for height from the along-track fit, not including geolocation-induced error
(Type is String)
-
source:
section 3.6.4
(Type is String)
-
origname:
sigma_h_mean
(Type is String)
-
fullnamepath:
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gt3r_land_ice_segments_fit_statistics_h_rms_misfit[
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contentType:
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long_name:
RMS Misfit
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-
description:
RMS misfit between PE heights and along- track segment fit
(Type is String)
-
source:
section 3.6.3
(Type is String)
-
origname:
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(Type is String)
-
fullnamepath:
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gt3r_land_ice_segments_fit_statistics_signal_selection_source_status[
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attributes
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(Type is String)
-
contentType:
qualityInformation
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long_name:
Signal Selection Source Status
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-
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Indicates the status of the last signal selection algorithm attempted (see signal_selection_source). The definition of flag is different for each source and are defined in eacoh of the signal_selection_status flags. (See Land Ice ATBD Table 3-2).
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
valid_min:
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(Type is Int8)
-
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(Type is Int8)
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origname:
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fullnamepath:
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(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Along Track Slope
(Type is String)
-
description:
Along-track slope from along-track segment fit
(Type is String)
-
source:
section 3.3.5.1
(Type is String)
-
origname:
dh_fit_dx
(Type is String)
-
fullnamepath:
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(Type is String)
gt3r_land_ice_segments_fit_statistics_n_fit_photons[
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(Type is String)
-
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physicalMeasurement
(Type is String)
-
long_name:
Number of Photons in Fit
(Type is String)
-
description:
Number of PEs used in determining h_li, after editing
(Type is String)
-
source:
section 3.3.5.2
(Type is String)
-
origname:
n_fit_photons
(Type is String)
-
fullnamepath:
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-
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(Type is String)
gt3r_land_ice_segments_fit_statistics_w_surface_window_final[
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attributes
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(Type is Float32)
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meters
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Surface Window Width
(Type is String)
-
description:
Width of the surface window, top to bottom
(Type is String)
-
source:
section 3.3.5.2
(Type is String)
-
origname:
w_surface_window_final
(Type is String)
-
fullnamepath:
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(Type is String)
-
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(Type is String)
gt3r_land_ice_segments_longitude[
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(Type is Float64)
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attributes
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units:
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(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Longitude of segment center, , WGS84, East=+
(Type is String)
-
source:
section 3.10
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
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(Type is Float64)
-
origname:
longitude
(Type is String)
-
fullnamepath:
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(Type is String)
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coordinates:
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(Type is String)
gt3r_land_ice_segments_latitude[
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(Type is Float64)
-
attributes
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units:
degrees_north
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Latitude
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Latitude of segment center, WGS84, North=+,
(Type is String)
-
source:
section 3.10
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
origname:
latitude
(Type is String)
-
fullnamepath:
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(Type is String)
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coordinates:
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(Type is String)
gt3r_land_ice_segments_h_li[
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attributes
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(Type is Float32)
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units:
meters
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Land Ice height
(Type is String)
-
description:
Standard land-ice segment height determined by land ice algorithm, corrected for first-photon bias, representing the median- based height of the selected PEs
(Type is String)
-
source:
section 4.4
(Type is String)
-
origname:
h_li
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt3r_land_ice_segments_ground_track_ref_azimuth[
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(Type is Float32)
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(Type is String)
-
contentType:
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(Type is String)
-
long_name:
Azimuth
(Type is String)
-
description:
The direction, eastwards from north, of the laser beam vector as seen by an observer at the laser ground spot viewing toward the spacecraft (i.e., the vector from the ground to the spacecraft).
(Type is String)
-
source:
ATL03g, Section 3.3
(Type is String)
-
origname:
ref_azimuth
(Type is String)
-
fullnamepath:
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(Type is String)
-
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(Type is String)
gt3r_land_ice_segments_ground_track_seg_azimuth[
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(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Segment Azimuth
(Type is String)
-
description:
Azimuth of the pair-track, east of local north.
(Type is String)
-
source:
section 3.1.2.2
(Type is String)
-
origname:
seg_azimuth
(Type is String)
-
fullnamepath:
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(Type is String)
gt3r_land_ice_segments_ground_track_sigma_geo_at[
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(Type is Float32)
-
attributes
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contentType:
qualityInformation
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-
long_name:
Across Track Geolocation Error
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-
description:
Along-track component of the geolocation error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
_FillValue:
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(Type is Float32)
-
units:
meters
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(Type is String)
gt3r_land_ice_segments_ground_track_sigma_geo_xt[
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-
contentType:
qualityInformation
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long_name:
Along Track Geolocation Error
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-
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Across-track component of the geolocation error.
(Type is String)
-
source:
section 3.10
(Type is String)
-
origname:
sigma_geo_xt
(Type is String)
-
fullnamepath:
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(Type is String)
gt3r_land_ice_segments_ground_track_ref_coelv[
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(Type is Float32)
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radians
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Co-elevation
(Type is String)
-
description:
Coelevation (CE) is direction from vertical of the laser beam as seen by an observer located at the laser ground spot.
(Type is String)
-
source:
ATL03g, Section 3.3
(Type is String)
-
origname:
ref_coelv
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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(Type is String)
gt3r_land_ice_segments_ground_track_x_atc[
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(Type is Float64)
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attributes
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(Type is String)
-
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referenceInformation
(Type is String)
-
long_name:
X Along Track
(Type is String)
-
description:
The along-track x-coordinate of the segment, measured parallel to the RGT, measured from the ascending node of the equatorial crossing of a given RGT.
(Type is String)
-
source:
section 3.1.2.2
(Type is String)
-
origname:
x_atc
(Type is String)
-
fullnamepath:
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(Type is String)
-
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(Type is String)
gt3r_land_ice_segments_ground_track_y_atc[
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(Type is Float32)
-
attributes
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(Type is Float32)
-
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(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Y Along Track
(Type is String)
-
description:
Along-track y coordinate of the segment, relative to the RGT, measured along the perpendicular to the RGT, positive to the right of the RGT.
(Type is String)
-
source:
section 3.1.2.2
(Type is String)
-
origname:
y_atc
(Type is String)
-
fullnamepath:
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(Type is String)
-
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(Type is String)
gt3r_land_ice_segments_dem_dem_flag[
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(Type is Int8)
-
attributes
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(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
DEM Source Flag
(Type is String)
-
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Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS, 4=Antarctic.
(Type is String)
-
source:
DTU10/GMTED/GIMP
(Type is String)
-
flag_meanings:
none gimp gmted mss antarctic
(Type is String)
-
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(Type is Int8)
-
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(Type is Int8)
-
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-
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(Type is String)
gt3r_land_ice_segments_dem_dem_h[
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(Type is Float32)
-
attributes
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(Type is String)
-
contentType:
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(Type is String)
-
long_name:
DEM Height
(Type is String)
-
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Height of the DEM, interpolated by cubic-spline interpolation in the DEM coordinate system to the PE location.
(Type is String)
-
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DTU10/GMTED/GIMP
(Type is String)
-
origname:
dem_h
(Type is String)
-
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(Type is String)
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(Type is String)
gt3r_land_ice_segments_dem_geoid_h[
/gt3r_land_ice_segments_delta_time=
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(Type is Float32)
-
attributes
-
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(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Geoid Height
(Type is String)
-
description:
Geoid height above WGS-84 reference ellipsoid (range -107 to 86m),
(Type is String)
-
source:
EGM2008
(Type is String)
-
origname:
geoid_h
(Type is String)
-
fullnamepath:
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(Type is String)
-
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(Type is String)
gt3r_land_ice_segments_geophysical_msw_flag[
/gt3r_land_ice_segments_delta_time=
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(Type is Int8)
-
attributes
-
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referenceInformation
(Type is String)
-
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Multiple Scattering Warning Flag
(Type is String)
-
description:
Combined flag indicating the risks of severe multiple scattering. The multiple scattering warning flag (ATL09 parameter msw_flag) has values from -1 to 5 where zero means no multiple scattering and 5 the greatest. If no layers were detected, then msw_flag = 0. If blowing snow is detected and its estimated optical depth is greater than or equal to 0.5, then msw_flag = 5. If the blowing snow optical depth is less than 0.5, then msw_flag = 4. If no blowing snow is detected but there are cloud or aerosol layers detected, the msw_flag assumes values of 1 to 3 based on the height of the bottom of the lowest layer: < 1 km, msw_flag = 3; 1-3 km, msw_flag = 2; > 3km, msw_flag = 1. A value of -1 indicates that the signal to noise of the data was too low to reliably ascertain the presence of cloud or blowing snow. We expect values of -1 to occur only during daylight.
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
cannot_determine no_layers layer_gt_3km layer_between_1_and_3_km layer_lt_1km blow_snow_od_lt_0.5 blow_snow_od_gt_0.5
(Type is String)
-
flag_values:
-1, 0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
-1
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
origname:
msw_flag
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/msw_flag
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_bsnow_conf[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow confidence
(Type is String)
-
description:
Confidence flag for presence of blowing snow
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_conf
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/bsnow_conf
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_bsnow_h[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Blowing Snow Layer Top Height
(Type is String)
-
description:
Blowing snow layer top height
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_h
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/bsnow_h
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_tide_ocean[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Ocean Tide
(Type is String)
-
description:
Ocean Tides including diurnal and semi-diurnal (harmonic analysis), and longer period tides (dynamic and self-consistent equilibrium).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.1
(Type is String)
-
origname:
tide_ocean
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/tide_ocean
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_tide_earth[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Earth Tide
(Type is String)
-
description:
Solid Earth Tides
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.3
(Type is String)
-
origname:
tide_earth
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/tide_earth
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_solar_azimuth[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees_east
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar azimuth
(Type is String)
-
description:
The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
(Type is String)
-
source:
ATL03
(Type is String)
-
origname:
solar_azimuth
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/solar_azimuth
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_r_eff[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Effective uncorrected reflectance
(Type is String)
-
description:
Effective reflectance, uncorrected for atmospheric effects.
(Type is String)
-
source:
section 3.1.5.4
(Type is String)
-
origname:
r_eff
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/r_eff
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_dac[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Dynamic Atmosphere Correction
(Type is String)
-
description:
Dynamic Atmospheric Correction (DAC) includes inverted barometer (IB) effect.
(Type is String)
-
source:
ATL03, 6.3.2
(Type is String)
-
origname:
dac
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/dac
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_tide_load[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Load Tide
(Type is String)
-
description:
Load Tide - Local displacement due to Ocean Loading (-6 to 0 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.4
(Type is String)
-
origname:
tide_load
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/tide_load
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_bsnow_od[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
1
(Type is String)
-
contentType:
modelResult
(Type is String)
-
long_name:
Blowing snow OD
(Type is String)
-
description:
Optical thickness of blowing snow layer.
(Type is String)
-
source:
ATL09
(Type is String)
-
origname:
bsnow_od
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/bsnow_od
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_cloud_flg_atm[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Cloud flag
(Type is String)
-
description:
Indicates the probability of clouds based on backscatter measurements
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
no yes
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
cloud_flg_atm
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/cloud_flg_atm
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_solar_elevation[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
degrees
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
solar elevation
(Type is String)
-
description:
Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low-precision value, with approximately TBD degree accuracy.
(Type is String)
-
source:
ATL03
(Type is String)
-
valid_min:
-90.00000000
(Type is Float32)
-
valid_max:
90.00000000
(Type is Float32)
-
origname:
solar_elevation
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/solar_elevation
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_tide_pole[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Solid Earth Pole Tide
(Type is String)
-
description:
Solid Earth Pole Tide -Rotational deformation due to polar motion (-1.5 to 1.5 cm).
(Type is String)
-
source:
ATL03 ATBD, Section 6.3.5
(Type is String)
-
origname:
tide_pole
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/tide_pole
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_e_bckgrd[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Expected background count rate
(Type is String)
-
description:
Expected background count rate based on sun angle, surface slope, for unit surface reflectance
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
e_bckgrd
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/e_bckgrd
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_cloud_flg_asr[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Int8)
-
attributes
-
_FillValue:
127
(Type is Int8)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
cloud flag confidence
(Type is String)
-
description:
Indicates cloud attenuation as calculated from the apparent surface reflectance, assuming a white snow surface
(Type is String)
-
source:
ATL09
(Type is String)
-
flag_meanings:
clear_with_high_confidence clear_with_medium_confidence clear_with_low_confidence cloudy_with_low_confidence cloudy_with_medium_confidence cloudy_with_high_confidence
(Type is String)
-
flag_values:
0, 1, 2, 3, 4, 5
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
5
(Type is Int8)
-
origname:
cloud_flg_asr
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/cloud_flg_asr
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_bckgrd[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
hz
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Background count rate
(Type is String)
-
description:
Background count rate, derived from the ATL03 50-shot-average, interpolated to the segment center.
(Type is String)
-
source:
section 3.6.1
(Type is String)
-
origname:
bckgrd
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/bckgrd
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_geophysical_neutat_delay_total[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Total Neutral Atmospheric Delay
(Type is String)
-
description:
Total neutral atmosphere delay correction (wet+dry).
(Type is String)
-
source:
ATL03a ATBD
(Type is String)
-
origname:
neutat_delay_total
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/geophysical/neutat_delay_total
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_atl06_quality_summary[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
ATL06_Quality_Summary
(Type is String)
-
description:
The ATL06_quality_summary parameter indicates the best-quality subset of all ATL06 data. A zero in this parameter implies that no data-quality tests have found a problem with the segment, a one implies that some potential problem has been found. Users who select only segments with zero values for this flag can be relatively certain of obtaining high-quality data, but will likely miss a significant fraction of usable data, particularly in cloudy, rough, or low-surface-reflectance conditions.
(Type is String)
-
source:
section 4.3
(Type is String)
-
flag_meanings:
best_quality potential_problem
(Type is String)
-
flag_values:
0, 1
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
1
(Type is Int8)
-
origname:
atl06_quality_summary
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/atl06_quality_summary
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_segment_id[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Int32)
-
attributes
-
_FillValue:
0
(Type is Int32)
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number, counting from the equator. Equal to the segment_id for the second of the two 20m ATL03 segments included in the 40m ATL06 segment
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/segment_id
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_bias_correction_fpb_mean_corr[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
first photon bias mean correction
(Type is String)
-
description:
Estimated first-photon bias (fpb) correction to mean segment height
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/bias_correction/fpb_mean_corr
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_bias_correction_fpb_mean_corr_sigma[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb mean corr sigma
(Type is String)
-
description:
Estimated error in fpb_mean_corr
(Type is String)
-
source:
section 3.4.3.1
(Type is String)
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
origname:
fpb_mean_corr_sigma
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/bias_correction/fpb_mean_corr_sigma
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_bias_correction_fpb_med_corr[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr
(Type is String)
-
description:
First-photon-bias correction giving the difference between the mean segment height and the corrected median height
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/bias_correction/fpb_med_corr
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_bias_correction_fpb_med_corr_sigma[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb median corr sigma
(Type is String)
-
description:
Estimated error in fpb_med_corr
(Type is String)
-
source:
section 3.4.3.2
(Type is String)
-
origname:
fpb_med_corr_sigma
(Type is String)
-
fullnamepath:
/gt3r/land_ice_segments/bias_correction/fpb_med_corr_sigma
(Type is String)
-
coordinates:
gt3r_land_ice_segments_delta_time gt3r_land_ice_segments_latitude gt3r_land_ice_segments_longitude
(Type is String)
gt3r_land_ice_segments_bias_correction_fpb_n_corr[
/gt3r_land_ice_segments_delta_time=
0..58515]
(Type is Float32)
-
attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
counts
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
fpb number photons corr
(Type is String)
-
description:
Estimated window photon count after first-photon-bias correction
(Type is String)
-
source:
section 4.3.3.3
(Type is String)
-
origname:
fpb_n_corr
(Type is String)
-
fullnamepath:
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(Type is String)
-
coordinates:
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gt3r_land_ice_segments_bias_correction_tx_mean_corr[
/gt3r_land_ice_segments_delta_time=
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attributes
-
_FillValue:
3.402823466e+38
(Type is Float32)
-
units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape mean correction
(Type is String)
-
description:
Estimate of the difference between the mean of the full-waveform transmit-pulse and the mean of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_mean_corr
(Type is String)
-
fullnamepath:
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(Type is Float32)
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units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
mean median residual
(Type is String)
-
description:
Difference between uncorrected mean and median of linear fit residuals
(Type is String)
-
source:
section 3.3.5
(Type is String)
-
origname:
med_r_fit
(Type is String)
-
fullnamepath:
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gt3r_land_ice_segments_bias_correction_tx_med_corr[
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units:
meters
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
tx shape median correction
(Type is String)
-
description:
Estimate of the difference between the median of the full-waveform transmit-pulse mean and the median of a broadened, truncated waveform consistent with the received pulse
(Type is String)
-
source:
section 3.5
(Type is String)
-
origname:
tx_med_corr
(Type is String)
-
fullnamepath:
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coordinates:
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(Type is String)
gt3r_residual_histogram_count[
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[
/gt3r_residual_histogram_dh=
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(Type is Int32)
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attributes
-
units:
counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Bin Counts
(Type is String)
-
description:
Residual count in 1-cm bins, for PE within 10 (horizontal) m of segment centers for each histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
count
(Type is String)
-
fullnamepath:
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(Type is String)
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coordinates:
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(Type is String)
gt3r_residual_histogram_lat_mean[
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(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Latitude Mean
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Mean latitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
origname:
lat_mean
(Type is String)
-
fullnamepath:
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(Type is String)
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coordinates:
gt3r_residual_histogram_delta_time gt3r_residual_histogram_lon_mean
(Type is String)
gt3r_residual_histogram_bckgrd_per_bin[
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(Type is Float32)
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attributes
-
units:
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(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Expected background PEs
(Type is String)
-
description:
Number of background PE expected for the bins in each column of the histogram based on the observed background rate (bckgrd).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
bckgrd_per_bin
(Type is String)
-
fullnamepath:
/gt3r/residual_histogram/bckgrd_per_bin
(Type is String)
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coordinates:
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gt3r_residual_histogram_x_atc_mean[
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(Type is Float64)
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attributes
-
units:
1
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Along Track Coordinate Mean
(Type is String)
-
description:
Mean along-track coordinate of the segments included in the histogram.
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
x_atc_mean
(Type is String)
-
fullnamepath:
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(Type is String)
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(Type is String)
gt3r_residual_histogram_segment_id_list[
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/gt3r_residual_histogram_ds_segment_id=
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(Type is Int32)
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attributes
-
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1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Segment ID List
(Type is String)
-
description:
Segments ids included in each column of the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
_FillValue:
2147483647
(Type is Int32)
-
origname:
segment_id_list
(Type is String)
-
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gt3r_residual_histogram_pulse_count[
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(Type is Int32)
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attributes
-
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counts
(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Number of Histogram Segment Pulses
(Type is String)
-
description:
Number of pulses potentially included in the histogram (pulses are counted if they are in the central 20 m of each segment, even if no PE from the pulse are selected).
(Type is String)
-
source:
Section 4.11
(Type is String)
-
origname:
pulse_count
(Type is String)
-
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(Type is String)
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(Type is String)
gt3r_residual_histogram_lon_mean[
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(Type is Float64)
-
attributes
-
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(Type is String)
-
contentType:
physicalMeasurement
(Type is String)
-
long_name:
Longitude Mean
(Type is String)
-
standard_name:
longitude
(Type is String)
-
description:
Mean longitude of the segments included in the histogram
(Type is String)
-
source:
Section 4.11
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
lon_mean
(Type is String)
-
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(Type is String)
-
coordinates:
gt3r_residual_histogram_delta_time gt3r_residual_histogram_lat_mean
(Type is String)
gt3r_segment_quality_record_number[
/gt3r_segment_quality_delta_time=
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(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
long_name:
Land Ice Height Index
(Type is String)
-
description:
For those segments that have adequate signal strength, this parameter gives the record for the pair within the other groups in the granule.
(Type is String)
-
source:
section 4.2
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
origname:
record_number
(Type is String)
-
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(Type is String)
-
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(Type is String)
gt3r_segment_quality_reference_pt_lat[
/gt3r_segment_quality_delta_time=
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(Type is Float64)
-
attributes
-
units:
degrees_north
(Type is String)
-
long_name:
Latitude
(Type is String)
-
standard_name:
latitude
(Type is String)
-
description:
Latitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-90.000000000000000
(Type is Float64)
-
valid_max:
90.000000000000000
(Type is Float64)
-
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referenceInformation
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-
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(Type is String)
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coordinates:
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(Type is String)
gt3r_segment_quality_reference_pt_lon[
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(Type is Float64)
-
attributes
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(Type is String)
-
contentType:
referenceInformation
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-
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Longitude
(Type is String)
-
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longitude
(Type is String)
-
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Longitude of the reference segment location on the RPT
(Type is String)
-
source:
section 3.1.9
(Type is String)
-
valid_min:
-180.00000000000000
(Type is Float64)
-
valid_max:
180.00000000000000
(Type is Float64)
-
origname:
reference_pt_lon
(Type is String)
-
fullnamepath:
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(Type is String)
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coordinates:
gt3r_segment_quality_delta_time gt3r_segment_quality_reference_pt_lat
(Type is String)
gt3r_segment_quality_segment_id[
/gt3r_segment_quality_delta_time=
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(Type is Int32)
-
attributes
-
units:
1
(Type is String)
-
contentType:
referenceInformation
(Type is String)
-
long_name:
Reference Point, m
(Type is String)
-
description:
Segment number corresponding to the second of two ATL03 segments in the ATL06 segment, counted from the RGT equator crossing
(Type is String)
-
source:
section 3.1.2.1
(Type is String)
-
origname:
segment_id
(Type is String)
-
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(Type is String)
-
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(Type is String)
gt3r_segment_quality_signal_selection_source[
/gt3r_segment_quality_delta_time=
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(Type is Int8)
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attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Source
(Type is String)
-
description:
Indicates the last algorithm attempted to select the signal for ATL06 fitting. 0=Signal selection succeeded using ATL03 detected PE; 1=Signal selection failed using ATL03 detected PE but succeeded using all flagged ATL03 PE; 2=Signal selection failed using all flagged ATL03 PE, but succeeded using the backup algorithm; 3=All signal-finding strategies failed.
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded_using_pe succeeded_using_flagged_pe succeeded_using_backup failed
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_source
(Type is String)
-
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(Type is String)
-
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(Type is String)
gt3r_segment_quality_signal_selection_status_signal_selection_status_all[
/gt3r_segment_quality_delta_time=
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(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Status Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using all ATL03-flagged PEs. 0=Signal selection succeeded using all ATL03-flagged PEs (or algorthm not attempted); 1=Signal selection using all ATL03-flagged PEs failed the 20-meter-spread test; 2=Signal selection using all ATL03-flagged PEs failed the 10-photon-count test; 3=Signal selection using all ATL03-flagged PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_all
(Type is String)
-
fullnamepath:
/gt3r/segment_quality/signal_selection_status/signal_selection_status_all
(Type is String)
-
coordinates:
gt3r_segment_quality_delta_time gt3r_segment_quality_reference_pt_lat gt3r_segment_quality_reference_pt_lon
(Type is String)
gt3r_segment_quality_signal_selection_status_signal_selection_status_backup[
/gt3r_segment_quality_delta_time=
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(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Backup Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using the backup signal finder. 0=Signal selection succeeded using the backup signal finder after centering the window on flagged PE (or backup signal finder not attempted); 1=Signal selection succeeded using the backup signal finder after searching for the strongest-signal window using four adjacent ATL03 segments; 2=Signal selection using the backup signal finder failed the 20-meter spread test; 3=Signal selection using the backup signal finder failed the 10-photon count test; 4=Signal selection using the backup signal finder failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_widen failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3, 4
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
4
(Type is Int8)
-
origname:
signal_selection_status_backup
(Type is String)
-
fullnamepath:
/gt3r/segment_quality/signal_selection_status/signal_selection_status_backup
(Type is String)
-
coordinates:
gt3r_segment_quality_delta_time gt3r_segment_quality_reference_pt_lat gt3r_segment_quality_reference_pt_lon
(Type is String)
gt3r_segment_quality_signal_selection_status_signal_selection_status_confident[
/gt3r_segment_quality_delta_time=
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(Type is Int8)
-
attributes
-
units:
1
(Type is String)
-
contentType:
qualityInformation
(Type is String)
-
long_name:
Signal Selection Confident Flag
(Type is String)
-
description:
Indicates confidence of the signal-selection algorithm using low or better PEs. 0=Signal selection succeeded using ATL03 low-or-better confidence PEs; 1=Signal selection using ATL03 low-or-better confidence PEs failed the 20-meter-spread test; 2=Signal selection using ATL03 low-or-better confidence PEs failed the 10-photon-count test; 3=Signal selection using ATL03 low-or-better confidence PEs failed both tests
(Type is String)
-
source:
section 3.3.3
(Type is String)
-
flag_meanings:
succeeded failed_20 failed_10 failed_both
(Type is String)
-
flag_values:
0, 1, 2, 3
(Type is Int8)
-
valid_min:
0
(Type is Int8)
-
valid_max:
3
(Type is Int8)
-
origname:
signal_selection_status_confident
(Type is String)
-
fullnamepath:
/gt3r/segment_quality/signal_selection_status/signal_selection_status_confident
(Type is String)
-
coordinates:
gt3r_segment_quality_delta_time gt3r_segment_quality_reference_pt_lat gt3r_segment_quality_reference_pt_lon
(Type is String)
