Attributes {
Metadata {
String iso_19139_dataset_xml_md5 "f86fd54133cb84a01292806d37288347";
String iso_19139_series_xml_md5 "eedfa7beef943b08c18fc200862e64b2";
String iso_19139_dataset_xml "
SMAP_L2_SM_P_03721_D_20151013T000528_R16510_001.h5
eng
utf8
dataset
NSIDC DAAC > National Snow and Ice Data Center DAAC
nsidc@nsidc.org
http://nsidc.org/daac/
pointOfContact
2014-06-17
ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data
ISO 19115-2:2009-02-15
1
area
false
false
false
SMAP Fixed Earth Grids, SMAP Science Document no: 033, May 11, 2009
SMAP_L2_SM_P_03721_D_20151013T000528_R16510_001.h5
2019-08-27
creation
R16510
a8938e5f-9086-4f77-b206-169128b7d517
Open Software Foundation
A Universally Unique Identifier (UUID)
SPL2SMP
http://smap.jpl.nasa.gov
The ECS Short Name
006
gov.nasa.esdis
The ECS Version ID
Jet Propulsion Laboratory
originator
L2_SM_P
The Calibration and Validation Version 2 of the SMAP Level 2 Passive Soil Moisture Science Processing Software.
Passive soil moisture estimates onto a 36-km global Earth-fixed grid, based on radiometer measurements acquired when the SMAP spacecraft is travelling from North to South at approximately 6:00 AM local time.
The SMAP L2_SM_P effort provides soil moistures based on radiometer data on a 36 km grid.
The software that generates the Level 2 Passive Soil Moisture product and the data system that automates its production were designed and implemented at the Jet Propulsion Laboratory, California Institute of Technology in Pasadena, California.
onGoing
asNeeded
2016-05-01
HDF5
1.8.13
SMAP_L2_SM_P_03721_D_20151013T000528_R16510_001.qa
2019-08-27
creation
R16510
An ASCII product that contains statistical information on data product results. These statistics enable data producers and users to assess the quality of the data in the data product granule.
crossReference
grid
eng
utf8
geoscientificInformation
Data product generated by the SMAP mission in HDF5 format with metadata that conforms to the ISO 19115 model.
Soil moistures retrieved from brightness temperatures recorded by the SMAP radiometer over land targets on the descending (AM) SMAP half-orbits when the SMAP spacecraft is travelling from North to South, while the SMAP instruments are operating in the nominal mode. Retrievals are performed but flagged as questionable over urban areas, mountainous areas with high elevation variability, and areas with high ( > 5 kg/m**2) vegetation water content; for retrievals using the high-resolution radar, cells in the nadir region are also flagged. Retrievals are inhibited for permanent snow/ice, frozen ground, and excessive static or transient open water in the cell, and for excessive RFI in the sensor data.
true
-76.9300003051758 -12.9799995422363 -75.6800003051758 12.0200004577637 -70 37.0200004577637 -60 53.3199996948242 -50 61.2099990844727 -40 66.2900009155273 -30 70.0800018310547 -20 72.8600006103516 -10 75.629997253418 0 77.629997253418 10 79.629997253418 20 81.6100006103516 30 83.8300018310547 40 85.7900009155273 50 88.2099990844727 60 91.0699996948242 70 95.2699966430664 80 106.120002746582 85.4300003051758 128.130004882812 86.6800003051758 152.130004882812 87.1800003051758 177.130004882812 77.1800003051758 177.130004882812 75.6800003051758 152.130004882812 70 127.129997253418 60 111.339996337891 50 103.699996948242 40 98.620002746582 30 95.0699996948242 20 92.0400009155273 10 89.7799987792969 0 87.5199966430664 -10 85.5299987792969 -20 83.5400009155273 -30 81.5699996948242 -40 79.370002746582 -50 77.1999969482422 -60 74.3399963378906 -70 69.879997253418 -80 59.5299987792969 -85.4300003051758 36.0200004577637 -86.6800003051758 12.0200004577637 -86.9300003051758 -12.9799995422363 -76.9300003051758 -12.9799995422363
2015-10-13T00:05:27.947Z
2015-10-13T00:58:49.384Z
attribute
soil_moisture
Percent of Missing Data
Percentage of EASE2 grid cells that lack soil moisture retrieval values relative to the total number of grid cells where soil moisture retrieval was attempted.
directInternal
*undefined*
percent
79.0569534301758
Soil moisture retrieved using default retrieval algorithm from brightness temperatures acquired by the SMAP radiometer during the spacecraft descending pass.
2019-08-27T08:28:20.657Z
Soil Moisture Active Passive Mission (SMAP) Science Data System (SDS) Operations Facility
processor
L2_SM_P
L2_SM_P_SPS
2014-04-15
revision
025
Algorithm Theoretical Basis Document: SMAP L2 and L3 Radiometer Soil Moisture (Passive) Data Products: L2_SM_P & L3_SM_P
2012-10-26
publication
Preliminary
Soil Moisture Active Passive (SMAP) Radiometer processing algorithm
2019-04-03
revision
023
Soil moisture retrieval is obtained using the H-polarized TB and other ancillary data. Other option algorithms exist that use a combinarion of V- and/or H-polarized TBs for soil moisture retrieval.
Algorithm Theoretical Basis Document: SMAP L2 and L3 Radiometer Soil Moisture (Passive) Data Products: L2_SM_P & L3_SM_P
2014-03-04
publication
Preliminary
processingInformation
uuid for SnowFractionUpperThreshold
http://smap.jpl.nasa.gov
SnowFractionUpperThreshold
float
0.5
processingInformation
uuid for SnowFractionLowerThreshold
http://smap.jpl.nasa.gov
SnowFractionLowerThreshold
float
0.05
processingInformation
uuid for IceFractionUpperThreshold
http://smap.jpl.nasa.gov
IceFractionUpperThreshold
float
0.5
processingInformation
uuid for IceFractionLowerThreshold
http://smap.jpl.nasa.gov
IceFractionLowerThreshold
float
0.05
processingInformation
uuid for MountainousTerrainUpperThreshold
http://smap.jpl.nasa.gov
MountainousTerrainUpperThreshold
float
6
processingInformation
uuid for RainFractionUpperThreshold
http://smap.jpl.nasa.gov
RainFractionUpperThreshold
float
0.00706
processingInformation
uuid for RainFractionLowerThreshold
http://smap.jpl.nasa.gov
RainFractionLowerThreshold
float
0.00027778
processingInformation
uuid for ParameterVersionID
http://smap.jpl.nasa.gov
ParameterVersionID
string
016
processingInformation
uuid for FrozenGroundFractionLowerThreshold
http://smap.jpl.nasa.gov
FrozenGroundFractionLowerThreshold
float
0.05
processingInformation
uuid for FrozenGroundFractionUpperThreshold
http://smap.jpl.nasa.gov
FrozenGroundFractionUpperThreshold
float
0.5
processingInformation
uuid for MountainousTerrainLowerThreshold
http://smap.jpl.nasa.gov
MountainousTerrainLowerThreshold
float
3
processingInformation
uuid for algorithmSelection
http://smap.jpl.nasa.gov
algorithmSelection
int
0
processingInformation
uuid for UrbanFractionLowerThreshold
http://smap.jpl.nasa.gov
UrbanFractionLowerThreshold
float
0.25
processingInformation
uuid for epochJulianDate
http://smap.jpl.nasa.gov
epochJulianDate
float
2.45154e+06
processingInformation
uuid for VWCLowerThreshold
http://smap.jpl.nasa.gov
VWCLowerThreshold
float
5
processingInformation
uuid for WaterFractionUpperThreshold
http://smap.jpl.nasa.gov
WaterFractionUpperThreshold
float
0.5
processingInformation
uuid for timeVariableEpoch
http://smap.jpl.nasa.gov
timeVariableEpoch
string
J2000
processingInformation
uuid for WaterFractionLowerThreshold
http://smap.jpl.nasa.gov
WaterFractionLowerThreshold
float
0.05
processingInformation
uuid for UrbanFractionUpperThreshold
http://smap.jpl.nasa.gov
UrbanFractionUpperThreshold
float
1
processingInformation
uuid for epochUTCDateTime
http://smap.jpl.nasa.gov
epochUTCDateTime
dateTime
2000-01-01T11:58:55.816Z
processingInformation
uuid for VWCUpperThreshold
http://smap.jpl.nasa.gov
VWCUpperThreshold
float
30
Database that specifies representative fractions of sand that are found in each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid.
sand_M03_004.float32
2016-03-11
creation
004
SOIL_TEXTURE_SAND
Database that specifies representative fractions of water that are found in each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid.
creation
WATER_FRACTION
Provides the Euclidean distance at each grid point to the nearest significant water body.
dist2water_M36_002.float32
2014-02-04
creation
002
DIST2WATER
Database that specifies representative fractions of clay that are found in each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid.
clay_M03_004.float32
2016-03-11
creation
004
SOIL_TEXTURE_CLAY
Database that specifies the fraction of permanent water found in each of the 36 km cells in the cylindrical Equal-Area Scalable (EASE) Earth Grid. This data set was derived from the MODIS MOD44W data product.
waterfrac_M03_002.float32
2013-05-09
creation
002
WATER_FRACTION
Predominant land cover types that appear in each of the 3 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid. Land cover classes are based on those recommended by the International Geosphere-Biosphere Programme (IGBP).
dominantIGBP_M03_B20120101_003.uint8
2014-03-31
creation
003
LANDCOVER_CLASS
A configuration file that lists the entire content of the output Level 2 Passive Soil Moisture product.
SMAP_L2_SM_P_SPS_OutputConfig_L2_SM_P.xml
2019-08-27
creation
R16510
OutputConfig
The SMAP Level 1C_TB product provides radiometer brightness temperatures in half-orbit granules, gridded at 36 km grid resolution, on 3 EASE2 Earth-fixed grids - 1) Cylindrical projection, 2) Northern polar projection, 3) Southern polar projection.
SMAP_L1C_TB_03721_D_20151013T000528_R16010_001.h5
2018-07-06
creation
R16010
doi:10.5067/ZVILG0PS6CTI
gov.nasa.esdis
A Digital Object Identifier (DOI) that provides a persistent interoperable means to locate the SMAP Radiometer Level 1C (L1C_TB) data product.
L1C_TB
http://smap.jpl.nasa.gov
A short name employed by the Soil Moisture Active Passive mission to identify the Level 1C Radiometer product.
SMAP L1C_TB SPS
36
A configuration file that specifies the source of the values for each of the data elements that comprise the metadata in the output Level 2 Passive Soil Moisture Product.
SMAP_L2_SM_P_SPS_MetConfig_L1C_TB.xml
2019-08-27
creation
R16510
MetConfig
Representative soil temperature for each of the 9 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid at approximately the same time that the SMAP radiometer data were acquired. These data are based on the GEOS-5.7.2 TSURF data product generated by the Global Modeling and Assimilation (GMAO) office at the NASA Goddard Space Flight Center (GSFC).
tsurfGMAO_M09_P20151013T000000_A_20151013T000000_R11920_001.float32
2015-10-13
creation
001
TSURF
Representative soil temperature for each of the 9 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid at approximately the same time that the SMAP radiometer data were acquired. These data are based on the GEOS-5.7.2 TSURF data product generated by the Global Modeling and Assimilation (GMAO) office at the NASA Goddard Space Flight Center (GSFC).
tsurfGMAO_M09_P20151013T010000_A_20151013T010000_R11920_001.float32
2015-10-13
creation
001
TSURF
Representative soil temperature for each of the 9 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid at approximately the same time that the SMAP radiometer data were acquired. These data are based on the GEOS-5.7.2 TSURF data product generated by the Global Modeling and Assimilation (GMAO) office at the NASA Goddard Space Flight Center (GSFC).
tsurfGMAO_M09_P20151013T020000_A_20151013T020000_R11920_001.float32
2015-10-13
creation
001
TSURF
The SMAP Level 1C_TB product provides radiometer brightness temperatures in half-orbit granules, gridded at 36 km grid resolution, on 3 EASE2 Earth-fixed grids - 1) Cylindrical projection, 2) Northern polar projection, 3) Southern polar projection.
SMAP_L1C_TB_03721_D_20151013T000528_R16010_001.h5
2018-07-06
creation
R16010
doi:10.5067/ZVILG0PS6CTI
gov.nasa.esdis
A Digital Object Identifier (DOI) that provides a persistent interoperable means to locate the SMAP Active Level 2 Soil Moisture (L2_SM_A) data product.
L1C_TB
http://smap.jpl.nasa.gov
A short name employed by the Soil Moisture Active Passive mission to identify the Active Level 2 Soil Moisture product.
SMAP_L2_SM_A
3
A configuration file that specifies the complete set of elements within the input SMAP L2_SM_A Product that the Level 2 Passive Soil Moisture Science Processing Software (SPS) needs in order to function.
SMAP_L2_SM_P_SPS_InputConfig_L2_SM_A.xml
2019-08-27
creation
R16510
InputConfig
A configuration file that specifies the complete set of elements within the input SMAP L1C Radiometer Product that the Level 2 Passive Soil Moisture Science Processing Software (SPS) needs in order to function.
SMAP_L2_SM_P_SPS_InputConfig_L1C_TB.xml
2019-08-27
creation
R16510
InputConfig
Database that specifies a representative value of Normalized Difference Vegetation Index (NDVI) for each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid. The dataset was processed by USDA from the MODIS MOD13A2 data product.
NDVI_M03_286_002.int16
2013-04-24
creation
002
NDVI_CLIMATOLOGY
Snow fraction data resampled to 9 km grid spacing on the cylindrical Earth Equal-Area Scalable (EASE) Grid, derived from daily NOAA IMS snow cover data.
SnowIMS_M09_P20151013T000000_R11920_001.float32
2015-10-14
creation
001
SNOW
Representative surface slope data for each of the 36 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid. These data are based on the Global Multi-resolution Terrain Elevation 2010 (GMTED2010) data set provided by the United States Geological Service (USGS).
DEMSLP_M03_003.float32
2014-10-08
creation
003
DEMSLP
Representative precipitation measures for each of the 9 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid at approximately the same time that the SMAP radiometer data were acquired. These data are based on the GEOS-5.7.2 PRECTOT data product generated by the Global Modeling and Assimilation (GMAO) office at the NASA Goddard Space Flight Center (GSFC).
PrecipGMAO_M09_P20151013T013000_A_20151013T013000_R11920_001.float32
2015-10-13
creation
001
PRECIP
Predominant land cover types that appear in each of the 36 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid. Land cover classes are based on those recommended by the International Geosphere-Biosphere Programme (IGBP). The data set lists multiple predominant land cover types within each 36 km cell, along with an estimated fraction of the cell covered by each predominant type.
top3IGBPfrac_M36_B20120101_004.float32
2014-06-16
creation
004
LANDCOVER_CLASS_FRACTION_TOP3
Representative fraction of each of the 3 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid that is covered by Urban Area. These data are based on the Global Urban-Rural Mapping Project (GRUMP) conducted by the Center for International Earth Science Information Network (CIESUN) at Columbia University.
UrbanFraction_M03_002.float32
2013-04-25
creation
002
URBAN_FRACTION
The Surface ROUGHNESS_COEFF Coefficient file contains the RMS ROUGHNESS_COEFF in cm for each 3 km grid cell on the cylindrical Earth Equal-Area Scalable (EASE) grid. ROUGHNESS_COEFF data is in the physical unit of “cm”; and a scale factor of 10 is used to convert into unit-less coefficients. This is a static map based on MODIS IGBP land cover map.
h_M03_004.float32
2019-04-30
creation
004
SURFACE_ROUGHNESS_COEFF
Database that specifies representative bulk density that is found in each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid.
bulk_M03_004.float32
2014-05-09
creation
004
SOIL_TEXTURE_BULK
Predominant land cover types that appear in each of the 36 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid. Land cover classes are based on those recommended by the International Geosphere-Biosphere Programme (IGBP). The data set lists multiple predominant land cover types within each 36 km cell, along with an estimated fraction of the cell covered by each predominant type.
top3IGBPtype_M36_B20120101_004.uint8
2014-06-16
creation
004
LANDCOVER_CLASS_TOP3
A configuration file generated automatically within the SMAP data system that specifies all of the conditions required for each individual run of the Level 2 Passive Soil Moisture Software Processing Software (SPS).
SMAP_L2_SM_P_SPS_RunConfig_20190827T082820657.xml
2019-08-27
creation
R16510
RunConfig
Database that specifies a representative value of Normalized Difference Vegetation Index (NDVI) for each of the 36 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid. The dataset was processed by USDA from the MODIS MOD13A2 data product.
maxNDVI_M03_002.int16
2013-04-24
creation
002
NDVI_MAX
SMAP Handbook
2014-07-01
publication
JPL CL#14-2285, JPL 400-1567
SMAP
http://smap.jpl.nasa.gov
The SMAP observatory houses an L-band radiometer that operates at 1.414 GHz and an L-band radar that operates at 1.225 GHz. The instruments share a rotating reflector antenna with a 6 meter aperture that scans over a 1000 km swath. The bus is a 3 axis stabilized spacecraft that provides momentum compensation for the rotating antenna.
SMAP Handbook
2014-07-01
publication
JPL CL#14-2285, JPL 400-1567
SMAP SAR
L-Band Synthetic Aperture Radar
The SMAP 1.225 GHz L-Band Radar Instrument
SMAP Handbook
2014-07-01
publication
JPL CL#14-2285, JPL 400-1567
SMAP RAD
L-Band Radiometer
The SMAP 1.414 GHz L-Band Radiometer
processingInformation
uuid for inclination
http://smap.jpl.nasa.gov
inclination
float
98.0379
processingInformation
uuid for halfOrbitStartDateTime
http://smap.jpl.nasa.gov
halfOrbitStartDateTime
dateTime
2015-10-13T00:07:25.000Z
processingInformation
uuid for eccentricity
http://smap.jpl.nasa.gov
eccentricity
float
0.00126812
processingInformation
uuid for cycleNumber
http://smap.jpl.nasa.gov
cycleNumber
int
31
processingInformation
uuid for equatorCrossingDateTime
http://smap.jpl.nasa.gov
equatorCrossingDateTime
dateTime
2015-10-13T00:32:00.780Z
processingInformation
uuid for halfOrbitEndDateTime
http://smap.jpl.nasa.gov
halfOrbitEndDateTime
dateTime
2015-10-13T00:56:39.000Z
processingInformation
uuid for equatorCrossingLongitude
http://smap.jpl.nasa.gov
equatorCrossingLongitude
float
-85.241
processingInformation
uuid for referenceCRS
http://smap.jpl.nasa.gov
referenceCRS
string
Earth Centered Rotating
processingInformation
uuid for AntennaRotationRate
http://smap.jpl.nasa.gov
AntennaRotationRate
float
14.6
processingInformation
uuid for epoch
http://smap.jpl.nasa.gov
epoch
dateTime
2015-10-12T23:42:51.318Z
processingInformation
uuid for rightAscensionAscendingNode
http://smap.jpl.nasa.gov
rightAscensionAscendingNode
float
291.494
processingInformation
uuid for meanMotion
http://smap.jpl.nasa.gov
meanMotion
float
14.6247
processingInformation
uuid for semiMajorAxis
http://smap.jpl.nasa.gov
semiMajorAxis
float
7066.74
processingInformation
uuid for pathNumber
http://smap.jpl.nasa.gov
pathNumber
int
47
processingInformation
uuid for revNumber
http://smap.jpl.nasa.gov
revNumber
int
3721
processingInformation
uuid for OrbitDirection
http://smap.jpl.nasa.gov
OrbitDirection
string
Descending
processingInformation
uuid for argumentOfPerigee
http://smap.jpl.nasa.gov
argumentOfPerigee
float
68.7769
processingInformation
uuid for period
http://smap.jpl.nasa.gov
period
float
5907.81
";
String iso_19139_series_xml "
L2_SM_P
eng
utf8
series
NSIDC DAAC > National Snow and Ice Data Center DAAC
nsidc@nsidc.org
http://nsidc.org/daac/
pointOfContact
2014-04-15
ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data
ISO 19115-2:2009-02-15
SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture
2019-04-03
revision
R16
SPL2SMP
smap.jpl.nasa.gov
The ECS Short Name
006
gov.nasa.esdis
The ECS Version ID
doi:10.5067/R50VUC07OM4W
gov.nasa.esdis
A Digital Object Identifier (DOI)
National Aeronautics and Space Administration (NASA)
resourceProvider
Jet Propulsion Laboratory
originator
documentDigital
The Calibration and Validation Version 2 of the SMAP Level 2 Passive Soil Moisture Science Processing Software.
Passive soil moisture estimates onto a 36-km global Earth-fixed grid, based on radiometer measurements acquired when the SMAP spacecraft is travelling from North to South at approximately 6:00 AM local time.
The SMAP L2_SM_P algorithm provides soil moistures based on radiometer data on a 36-km grid. The radiometer data during descending half-orbits
are used by the active/passive algorithm in L2_SM_AP to disaggregate the 36 km radiometer measurements to create the 9 km active-passive
products.
The software that generates the Level 2 Soil Moisture Passive product and the data system that automates its production were designed and implemented
at the Jet Propulsion Laboratory, California Institute of Technology in Pasadena, California.
onGoing
National Snow and Ice Data Center
distributor
asNeeded
2017-04-01
series
HDF5
1.8.13
EARTH SCIENCE > LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT
EARTH SCIENCE > CLIMATE INDICATORS > LAND SURFACE/AGRICULTURE INDICATORS > SOIL MOISTURE
EARTH SCIENCE > SPECTRAL/ENGINEERING > MICROWAVE > BRIGHTNESS TEMPERATURE
EARTH SCIENCE > BIOSPHERE > VEGETATION > PLANT CHARACTERISTICS > VEGETATION WATER CONTENT
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > SURFACE ROUGHNESS
EARTH SCIENCE > LAND SURFACE > SURFACE RADIATIVE PROPERTIES > ALBEDO
EARTH SCIENCE > TERRESTRIAL HYDROSPHERE> SNOW/ICE > FREEZE/THAW
theme
NASA/GCMD Earth Science Keywords
Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > SMAP L-BAND RADIOMETER > SMAP L-Band Radiometer
theme
NASA/GCMD Earth Science Keywords
Earth Observation Satellites > NASA Decadal Survey > SMAP > Soil Moisture Active and Passive Observatory
theme
NASA/GCMD Earth Science Keywords
GEOGRAPHIC REGION > GLOBAL
theme
NASA/GCMD Earth Science Keywords
SMAP
largerWorkCitation
mission
grid
36
eng
utf8
geoscientificInformation
Data product generated by the SMAP mission in HDF5 format with metadata that conforms to the ISO 19115 model.
Soil moisture is
retrieved over land targets on the descending (AM) and ascending (PM) SMAP half-orbits,
while the SMAP instruments are operating in the nominal mode. Retrievals are performed but flagged as questionable
over urban areas, mountainous areas with high elevation variability, and areas with high ( > 5 kg/m**2) vegetation
water content; for retrievals using the high-resolution radar, cells in the nadir region are also flagged.
Retrievals are inhibited for permanent snow/ice, frozen ground, and excessive static or transient open water in the cell,
and for excessive RFI in the sensor data.
1
-180.00
180.00
-85.0445
85.0445
2015-03-31T00:00:00.000Z
2020-12-31T00:00:00.000Z
Soil Moisture Active Passive Mission L2_SM_P Product Specification Document
2012-10-25
publication
1.0
L2_SM_P
smap.jpl.nasa.gov
Short name used by the Soil Moisture Active Passive (SMAP) mission to identify the Level 2 Passive Soil Moisture product.
documentDigital
The Product Specification Document that fully describes the content and format of this data product.
eng
utf8
";
String fullnamepath "/Metadata";
}
Metadata_AcquisitionInformation {
}
Metadata_AcquisitionInformation_platform {
String description "The SMAP observatory houses an L-band radiometer that operates at 1.414 GHz and an L-band radar that operates at 1.225 GHz. The instruments share a rotating reflector antenna with a 6 meter aperture that scans over a 1000 km swath. The bus is a 3 axis stabilized spacecraft that provides momentum compensation for the rotating antenna.";
Float32 antennaRotationRate 14.60000038;
String identifier "SMAP";
String fullnamepath "/Metadata/AcquisitionInformation/platform";
}
Metadata_AcquisitionInformation_radarDocument {
String edition "JPL CL#14-2285, JPL 400-1567";
String title "SMAP Handbook";
String publicationDate "2014-07-01";
String fullnamepath "/Metadata/AcquisitionInformation/radarDocument";
}
Metadata_AcquisitionInformation_radiometerDocument {
String edition "JPL CL#14-2285, JPL 400-1567";
String title "SMAP Handbook";
String publicationDate "2014-07-01";
String fullnamepath "/Metadata/AcquisitionInformation/radiometerDocument";
}
Metadata_AcquisitionInformation_radiometer {
String description "The SMAP 1.414 GHz L-Band Radiometer";
String type "L-Band Radiometer";
String identifier "SMAP RAD";
String fullnamepath "/Metadata/AcquisitionInformation/radiometer";
}
Metadata_AcquisitionInformation_radar {
String description "The SMAP 1.225 GHz L-Band Radar Instrument";
String type "L-Band Synthetic Aperture Radar";
String identifier "SMAP SAR";
String fullnamepath "/Metadata/AcquisitionInformation/radar";
}
Metadata_AcquisitionInformation_platformDocument {
String edition "JPL CL#14-2285, JPL 400-1567";
String title "SMAP Handbook";
String publicationDate "2014-07-01";
String fullnamepath "/Metadata/AcquisitionInformation/platformDocument";
}
Metadata_DataQuality {
String scope "soil_moisture";
String fullnamepath "/Metadata/DataQuality";
}
Metadata_DataQuality_DomainConsistency {
String nameOfMeasure "Percentage of EASE2 grid cells with Retrieved Soil Moistures within the Acceptable Range.";
String measureDescription "Percentage of EASE2 grid cells with soil moisture measures that fall within of a predefined acceptable range.";
String evaluationMethodType "directInternal";
String unitOfMeasure "percent";
Float32 value 20.87345123;
String fullnamepath "/Metadata/DataQuality/DomainConsistency";
}
Metadata_DataQuality_CompletenessOmission {
String measureDescription "Percentage of EASE2 grid cells that lack soil moisture retrieval values relative to the total number of grid cells where soil moisture retrieval was attempted.";
String nameOfMeasure "Percent of Missing Data";
String unitOfMeasure "percent";
Float32 value 79.05695343;
String evaluationMethodType "directInternal";
String fullnamepath "/Metadata/DataQuality/CompletenessOmission";
}
Metadata_ProductSpecificationDocument {
String language "eng";
String characterSet "utf8";
String edition "1.0";
String title "Soil Moisture Active Passive Mission L2_SM_P Product Specification Document";
String publicationDate "2012-10-25";
String SMAPShortName "L2_SM_P";
String fullnamepath "/Metadata/ProductSpecificationDocument";
}
Metadata_SeriesIdentification {
String identifier_product_DOI "doi:10.5067/R50VUC07OM4W";
String shortName "SPL2SMP";
String mission "SMAP";
String characterSet "utf8";
String resourceProviderOrganizationName "National Aeronautics and Space Administration (NASA)";
String language "eng";
String otherCitiationDetails "The Calibration and Validation Version 2 of the SMAP Level 2 Passive Soil Moisture Science Processing Software.";
String ECSVersionID "006";
String abstract "Passive soil moisture estimates onto a 36-km global Earth-fixed grid, based on radiometer measurements acquired when the SMAP spacecraft is travelling from North to South at approximately 6:00 AM local time.";
String status "onGoing";
String revisionDate "2019-04-03";
String credit "The software that generates the Level 2 Soil Moisture Passive product and the data system that automates its production were designed and implemented
at the Jet Propulsion Laboratory, California Institute of Technology in Pasadena, California.";
String topicCategory "geoscientificInformation";
String purpose "The SMAP L2_SM_P algorithm provides soil moistures based on radiometer data on a 36-km grid. The radiometer data during descending half-orbits
are used by the active/passive algorithm in L2_SM_AP to disaggregate the 36 km radiometer measurements to create the 9 km active-passive
products.";
String longName "SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture";
String pointOfContact "National Snow and Ice Data Center";
String CompositeReleaseID "R16";
String spatialRepresentationType "grid";
String fullnamepath "/Metadata/SeriesIdentification";
}
Metadata_DatasetIdentification {
String shortName "SPL2SMP";
String characterSet "utf8";
String UUID "a8938e5f-9086-4f77-b206-169128b7d517";
String language "eng";
String formatVersion "1.8.13";
String ECSVersionID "006";
String abstract "Passive soil moisture estimates onto a 36-km global Earth-fixed grid, based on radiometer measurements acquired when the SMAP spacecraft is travelling from North to South at approximately 6:00 AM local time.";
String creationDate "2019-08-27";
String status "onGoing";
String credit "The software that generates the Level 2 Passive Soil Moisture product and the data system that automates its production were designed and implemented at the Jet Propulsion Laboratory, California Institute of Technology in Pasadena, California.";
String topicCategory "geoscientificInformation";
String purpose "The SMAP L2_SM_P effort provides soil moistures based on radiometer data on a 36 km grid.";
String format "HDF5";
String fileName "SMAP_L2_SM_P_03721_D_20151013T000528_R16510_001.h5";
String maintenanceAndUpdateFrequency "asNeeded";
String CompositeReleaseID "R16510";
String originatorOrganizationName "Jet Propulsion Laboratory";
String maintenanceDate "2016-05-01";
String SMAPShortName "L2_SM_P";
String spatialRepresentationType "grid";
String otherCitationDetails "The Calibration and Validation Version 2 of the SMAP Level 2 Passive Soil Moisture Science Processing Software.";
String fullnamepath "/Metadata/DatasetIdentification";
}
Metadata_Extent {
String description "Soil moistures retrieved from brightness temperatures recorded by the SMAP radiometer over land targets on the descending (AM) SMAP half-orbits when the SMAP spacecraft is travelling from North to South, while the SMAP instruments are operating in the nominal mode. Retrievals are performed but flagged as questionable over urban areas, mountainous areas with high elevation variability, and areas with high ( > 5 kg/m**2) vegetation water content; for retrievals using the high-resolution radar, cells in the nadir region are also flagged. Retrievals are inhibited for permanent snow/ice, frozen ground, and excessive static or transient open water in the cell, and for excessive RFI in the sensor data.";
Float32 polygonPosList -76.93000031, -12.97999954, -75.68000031, 12.02000046, -70.00000000, 37.02000046, -60.00000000, 53.31999969, -50.00000000, 61.20999908, -40.00000000, 66.29000092, -30.00000000, 70.08000183, -20.00000000, 72.86000061, -10.00000000, 75.62999725, 0.000000000, 77.62999725, 10.00000000, 79.62999725, 20.00000000, 81.61000061, 30.00000000, 83.83000183, 40.00000000, 85.79000092, 50.00000000, 88.20999908, 60.00000000, 91.06999969, 70.00000000, 95.26999664, 80.00000000, 106.1200027, 85.43000031, 128.1300049, 86.68000031, 152.1300049, 87.18000031, 177.1300049, 77.18000031, 177.1300049, 75.68000031, 152.1300049, 70.00000000, 127.1299973, 60.00000000, 111.3399963, 50.00000000, 103.6999969, 40.00000000, 98.62000275, 30.00000000, 95.06999969, 20.00000000, 92.04000092, 10.00000000, 89.77999878, 0.000000000, 87.51999664, -10.00000000, 85.52999878, -20.00000000, 83.54000092, -30.00000000, 81.56999969, -40.00000000, 79.37000275, -50.00000000, 77.19999695, -60.00000000, 74.33999634, -70.00000000, 69.87999725, -80.00000000, 59.52999878, -85.43000031, 36.02000046, -86.68000031, 12.02000046, -86.93000031, -12.97999954, -76.93000031, -12.97999954;
String rangeBeginningDateTime "2015-10-13T00:05:27.947Z";
String rangeEndingDateTime "2015-10-13T00:58:49.384Z";
String fullnamepath "/Metadata/Extent";
}
Metadata_QADatasetIdentification {
String fileName "SMAP_L2_SM_P_03721_D_20151013T000528_R16510_001.qa";
String abstract "An ASCII product that contains statistical information on data product results. These statistics enable data producers and users to assess the quality of the data in the data product granule.";
String creationDate "2019-08-27";
String fullnamepath "/Metadata/QADatasetIdentification";
}
Metadata_GridSpatialRepresentation {
String orientationParameterAvailability "0";
String controlPointAvailability "0";
String transformationParameterAvailability "0";
UInt32 dimensionSize 17242;
Float32 resolution 36.00000000;
String georeferencedParameters "SMAP Fixed Earth Grids, SMAP Science Document no: 033, May 11, 2009";
String cellGeometry "area";
String fullnamepath "/Metadata/GridSpatialRepresentation";
}
Metadata_GridSpatialRepresentation_GridDefinition {
String description "The Equal-Area Scalable Earth Grid (EASE-Grid 2.0) is used for gridding satellite data sets. The EASE-Grid 2.0 is defined on the WGS84 ellipsoid to allow users to import data into standard GIS software formats such as GeoTIFF without reprojection.";
String identifier "Equal-Area Scalable Earth Grid";
String fullnamepath "/Metadata/GridSpatialRepresentation/GridDefinition";
}
Metadata_GridSpatialRepresentation_GridDefinitionDocument {
String edition "EASE-Grid 2.0";
String title "EASE-Grid 2.0: Incremental but Significant Improvements for Earth-Gridded Data Sets (ISPRS Int. J. Geo-Inf. 2012, 1, 32-45; doi:10.3390/ijgi1010032)";
String publicationDate "2012-03-31";
String fullnamepath "/Metadata/GridSpatialRepresentation/GridDefinitionDocument";
}
Metadata_OrbitMeasuredLocation {
Float32 equatorCrossingLongitude -85.24096680;
Float32 meanMotion 14.62469769;
Float32 eccentricity 0.001268118038;
Float32 semiMajorAxis 7066.740723;
Int32 orbitPathNumber 47;
String epoch "2015-10-12T23:42:51.318Z";
Int32 cycleNumber 31;
String halfOrbitStopDateTime "2015-10-13T00:56:39.000Z";
Float32 inclination 98.03794861;
String halfOrbitStartDateTime "2015-10-13T00:07:25.000Z";
String equatorCrossingDateTime "2015-10-13T00:32:00.780Z";
String orbitDirection "Descending";
Float32 argumentOfPerigee 68.77687073;
Float32 orbitPeriod 5907.814453;
String referenceCRS "Earth Centered Rotating";
Int32 revNumber 3721;
Float32 rightAscensionAscendingNode 291.4941406;
String fullnamepath "/Metadata/OrbitMeasuredLocation";
}
Metadata_Lineage {
}
Metadata_Lineage_DIST2WATER {
String version "002";
String fileName "dist2water_M36_002.float32";
String creationDate "2014-02-04";
String fullnamepath "/Metadata/Lineage/DIST2WATER";
}
Metadata_Lineage_OutputConfiguration {
String description "A configuration file that lists the entire content of the output Level 2 Passive Soil Moisture product.";
String version "R16510";
String fileName "SMAP_L2_SM_P_SPS_OutputConfig_L2_SM_P.xml";
String creationDate "2019-08-27";
String fullnamepath "/Metadata/Lineage/OutputConfiguration";
}
Metadata_Lineage_SURFACE_ROUGHNESS_COEFF {
String description "The Surface ROUGHNESS_COEFF Coefficient file contains the RMS ROUGHNESS_COEFF in cm for each 3 km grid cell on the cylindrical Earth Equal-Area Scalable (EASE) grid. ROUGHNESS_COEFF data is in the physical unit of “cm”; and a scale factor of 10 is used to convert into unit-less coefficients. This is a static map based on MODIS IGBP land cover map.";
String version "004";
String fileName "h_M03_004.float32";
String creationDate "2019-04-30";
String fullnamepath "/Metadata/Lineage/SURFACE_ROUGHNESS_COEFF";
}
Metadata_Lineage_LANDCOVER_CLASS_TOP3 {
String description "Predominant land cover types that appear in each of the 36 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid. Land cover classes are based on those recommended by the International Geosphere-Biosphere Programme (IGBP). The data set lists multiple predominant land cover types within each 36 km cell, along with an estimated fraction of the cell covered by each predominant type.";
String version "004";
String fileName "top3IGBPtype_M36_B20120101_004.uint8";
String creationDate "2014-06-16";
String fullnamepath "/Metadata/Lineage/LANDCOVER_CLASS_TOP3";
}
Metadata_Lineage_SOIL_TEXTURE_BULK {
String description "Database that specifies representative bulk density that is found in each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid.";
String version "004";
String fileName "bulk_M03_004.float32";
String creationDate "2014-05-09";
String fullnamepath "/Metadata/Lineage/SOIL_TEXTURE_BULK";
}
Metadata_Lineage_URBAN_FRACTION {
String description "Representative fraction of each of the 3 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid that is covered by Urban Area. These data are based on the Global Urban-Rural Mapping Project (GRUMP) conducted by the Center for International Earth Science Information Network (CIESUN) at Columbia University.";
String version "002";
String fileName "UrbanFraction_M03_002.float32";
String creationDate "2013-04-25";
String fullnamepath "/Metadata/Lineage/URBAN_FRACTION";
}
Metadata_Lineage_NDVI {
String description "Database that specifies a representative value of Normalized Difference Vegetation Index (NDVI) for each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid. The dataset was processed by USDA from the MODIS MOD13A2 data product.";
String version "002";
String fileName "NDVI_M03_286_002.int16";
String creationDate "2013-04-24";
String fullnamepath "/Metadata/Lineage/NDVI";
}
Metadata_Lineage_SNOW {
String description "Snow fraction data resampled to 9 km grid spacing on the cylindrical Earth Equal-Area Scalable (EASE) Grid, derived from daily NOAA IMS snow cover data.";
String version "001";
String fileName "SnowIMS_M09_P20151013T000000_R11920_001.float32";
String creationDate "2015-10-14";
String fullnamepath "/Metadata/Lineage/SNOW";
}
Metadata_Lineage_L1C_TB {
String description "The SMAP Level 1C_TB product provides radiometer brightness temperatures in half-orbit granules, gridded at 36 km grid resolution, on 3 EASE2 Earth-fixed grids - 1) Cylindrical projection, 2) Northern polar projection, 3) Southern polar projection.";
String version "R16010";
String fileName "SMAP_L1C_TB_03721_D_20151013T000528_R16010_001.h5";
String DOI "doi:10.5067/ZVILG0PS6CTI";
String identifier "L1C_TB";
String creationDate "2018-07-06";
Float32 resolution 36.00000000;
String fullnamepath "/Metadata/Lineage/L1C_TB";
}
Metadata_Lineage_L2_SM_A {
String description "The SMAP Level 1C_TB product provides radiometer brightness temperatures in half-orbit granules, gridded at 36 km grid resolution, on 3 EASE2 Earth-fixed grids - 1) Cylindrical projection, 2) Northern polar projection, 3) Southern polar projection.";
String version "R16010";
String fileName "SMAP_L1C_TB_03721_D_20151013T000528_R16010_001.h5";
String DOI "doi:10.5067/ZVILG0PS6CTI";
String identifier "L1C_TB";
String creationDate "2018-07-06";
Float32 resolution 3.000000000;
String fullnamepath "/Metadata/Lineage/L2_SM_A";
}
Metadata_Lineage_SOIL_TEXTURE_CLAY {
String description "Database that specifies representative fractions of clay that are found in each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid.";
String version "004";
String fileName "clay_M03_004.float32";
String creationDate "2016-03-11";
String fullnamepath "/Metadata/Lineage/SOIL_TEXTURE_CLAY";
}
Metadata_Lineage_NDVI_MAX {
String description "Database that specifies a representative value of Normalized Difference Vegetation Index (NDVI) for each of the 36 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid. The dataset was processed by USDA from the MODIS MOD13A2 data product.";
String version "002";
String fileName "maxNDVI_M03_002.int16";
String creationDate "2013-04-24";
String fullnamepath "/Metadata/Lineage/NDVI_MAX";
}
Metadata_Lineage_SOIL_TEXTURE_SAND {
String description "Database that specifies representative fractions of sand that are found in each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid.";
String version "004";
String fileName "sand_M03_004.float32";
String creationDate "2016-03-11";
String fullnamepath "/Metadata/Lineage/SOIL_TEXTURE_SAND";
}
Metadata_Lineage_RunConfiguration {
String description "A configuration file generated automatically within the SMAP data system that specifies all of the conditions required for each individual run of the Level 2 Passive Soil Moisture Software Processing Software (SPS).";
String version "R16510";
String fileName "SMAP_L2_SM_P_SPS_RunConfig_20190827T082820657.xml";
String creationDate "2019-08-27";
String fullnamepath "/Metadata/Lineage/RunConfiguration";
}
Metadata_Lineage_PRECIP {
String description "Representative precipitation measures for each of the 9 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid at approximately the same time that the SMAP radiometer data were acquired. These data are based on the GEOS-5.7.2 PRECTOT data product generated by the Global Modeling and Assimilation (GMAO) office at the NASA Goddard Space Flight Center (GSFC).";
String version "001";
String fileName "PrecipGMAO_M09_P20151013T013000_A_20151013T013000_R11920_001.float32";
String creationDate "2015-10-13";
String fullnamepath "/Metadata/Lineage/PRECIP";
}
Metadata_Lineage_DEMSLP {
String description "Representative surface slope data for each of the 36 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid. These data are based on the Global Multi-resolution Terrain Elevation 2010 (GMTED2010) data set provided by the United States Geological Service (USGS).";
String version "003";
String fileName "DEMSLP_M03_003.float32";
String creationDate "2014-10-08";
String fullnamepath "/Metadata/Lineage/DEMSLP";
}
Metadata_Lineage_LANDCOVER_CLASS {
String description "Predominant land cover types that appear in each of the 3 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid. Land cover classes are based on those recommended by the International Geosphere-Biosphere Programme (IGBP).";
String version "003";
String fileName "dominantIGBP_M03_B20120101_003.uint8";
String creationDate "2014-03-31";
String fullnamepath "/Metadata/Lineage/LANDCOVER_CLASS";
}
Metadata_Lineage_MetadataConfiguration {
String description "A configuration file that specifies the source of the values for each of the data elements that comprise the metadata in the output Level 2 Passive Soil Moisture Product.";
String version "R16510";
String fileName "SMAP_L2_SM_P_SPS_MetConfig_L1C_TB.xml";
String creationDate "2019-08-27";
String fullnamepath "/Metadata/Lineage/MetadataConfiguration";
}
Metadata_Lineage_LANDCOVER_CLASS_FRACTION_TOP3 {
String description "Predominant land cover types that appear in each of the 36 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid. Land cover classes are based on those recommended by the International Geosphere-Biosphere Programme (IGBP). The data set lists multiple predominant land cover types within each 36 km cell, along with an estimated fraction of the cell covered by each predominant type.";
String version "004";
String fileName "top3IGBPfrac_M36_B20120101_004.float32";
String creationDate "2014-06-16";
String fullnamepath "/Metadata/Lineage/LANDCOVER_CLASS_FRACTION_TOP3";
}
Metadata_Lineage_InputConfiguration {
}
Metadata_Lineage_InputConfiguration_L2_SM_A {
String description "A configuration file that specifies the complete set of elements within the input SMAP L2_SM_A Product that the Level 2 Passive Soil Moisture Science Processing Software (SPS) needs in order to function.";
String version "R16510";
String fileName "SMAP_L2_SM_P_SPS_InputConfig_L2_SM_A.xml";
String creationDate "2019-08-27";
String fullnamepath "/Metadata/Lineage/InputConfiguration/L2_SM_A";
}
Metadata_Lineage_InputConfiguration_L1C_TB {
String description "A configuration file that specifies the complete set of elements within the input SMAP L1C Radiometer Product that the Level 2 Passive Soil Moisture Science Processing Software (SPS) needs in order to function.";
String version "R16510";
String fileName "SMAP_L2_SM_P_SPS_InputConfig_L1C_TB.xml";
String creationDate "2019-08-27";
String fullnamepath "/Metadata/Lineage/InputConfiguration/L1C_TB";
}
Metadata_Lineage_WATER_FRACTION {
String description "Database that specifies representative fractions of water that are found in each of the 3 km cells in the cylindrical Equal-Area Scalable Earth (EASE) Grid.";
String version "002";
String fileName "waterfrac_M03_002.float32";
String creationDate "2013-05-09";
String fullnamepath "/Metadata/Lineage/WATER_FRACTION";
}
Metadata_Lineage_TSURF {
String description "Representative soil temperature for each of the 9 km cells in the cylindrical Earth Equal-Area Scalable (EASE) Grid at approximately the same time that the SMAP radiometer data were acquired. These data are based on the GEOS-5.7.2 TSURF data product generated by the Global Modeling and Assimilation (GMAO) office at the NASA Goddard Space Flight Center (GSFC).";
String version "001", "001", "001";
String fileName "tsurfGMAO_M09_P20151013T000000_A_20151013T000000_R11920_001.float32", "tsurfGMAO_M09_P20151013T010000_A_20151013T010000_R11920_001.float32", "tsurfGMAO_M09_P20151013T020000_A_20151013T020000_R11920_001.float32";
String creationDate "2015-10-13", "2015-10-13", "2015-10-13";
String fullnamepath "/Metadata/Lineage/TSURF";
}
Metadata_ProcessStep {
Float32 RainFractionLowerThreshold 0.0002777799964;
Float32 FrozenGroundFractionLowerThreshold 0.05000000075;
String processDescription "Soil moisture retrieved using default retrieval algorithm from brightness temperatures acquired by the SMAP radiometer during the spacecraft descending pass.";
String stepDateTime "2019-08-27T08:28:20.657Z";
String documentation "Algorithm Theoretical Basis Document: SMAP L2 and L3 Radiometer Soil Moisture (Passive) Data Products: L2_SM_P & L3_SM_P";
Float32 UrbanFractionUpperThreshold 1.000000000;
Float32 VWCLowerThreshold 5.000000000;
Float32 IceFractionUpperThreshold 0.5000000000;
String epochUTCDateTime "2000-01-01T11:58:55.816Z";
String algorithmVersionID "023";
String softwareTitle "L2_SM_P_SPS";
String algorithmDate "2019-04-03";
Float32 WaterFractionLowerThreshold 0.05000000075;
String parameterVersionID "016";
Float32 RainFractionUpperThreshold 0.007060000207;
String identifier "L2_SM_P";
String ATBDVersion "Preliminary";
String softwareDate "2014-04-15";
Float32 SnowFractionLowerThreshold 0.05000000075;
Float32 MountainousTerrainLowerThreshold 3.000000000;
String ATBDDate "2014-03-04";
Float32 WaterFractionUpperThreshold 0.5000000000;
String SWVersionID "025";
Float32 FrozenGroundFractionUpperThreshold 0.5000000000;
String algorithmDescription "Soil moisture retrieval is obtained using the H-polarized TB and other ancillary data. Other option algorithms exist that use a combinarion of V- and/or H-polarized TBs for soil moisture retrieval.";
Float32 UrbanFractionLowerThreshold 0.2500000000;
String ATBDTitle "Algorithm Theoretical Basis Document: SMAP L2 and L3 Radiometer Soil Moisture (Passive) Data Products: L2_SM_P & L3_SM_P";
Float32 epochJulianDate 2451545.000;
Float32 IceFractionLowerThreshold 0.05000000075;
String timeVariableEpoch "J2000";
Float32 MountainousTerrainUpperThreshold 6.000000000;
Float32 VWCUpperThreshold 30.00000000;
String documentDate "2012-10-26";
String processor "Soil Moisture Active Passive Mission (SMAP) Science Data System (SDS) Operations Facility";
UInt32 algorithmSelection 0;
String algorithmTitle "Soil Moisture Active Passive (SMAP) Radiometer processing algorithm";
Float32 SnowFractionUpperThreshold 0.5000000000;
String documentVersion "Preliminary";
String fullnamepath "/Metadata/ProcessStep";
}
Soil_Moisture_Retrieval_Data {
}
Soil_Moisture_Retrieval_Data_roughness_coefficient_option3 {
String long_name "A unitless value that is indicative of bare soil roughness within the 36 km grid cell. Derived by retrieval of global map of h from DCA.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "roughness_coefficient_option3";
String fullnamepath "/Soil_Moisture_Retrieval_Data/roughness_coefficient_option3";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_albedo_option3 {
String long_name "Diffuse reflecting power of the Earth's surface within the grid cell, used in MDCA algorithm.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "albedo_option3";
String fullnamepath "/Soil_Moisture_Retrieval_Data/albedo_option3";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_static_water_body_fraction {
String long_name "The fraction of the area of the 36 km grid cell that is covered by static water based on a Digital Elevation Map.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "static_water_body_fraction";
String fullnamepath "/Soil_Moisture_Retrieval_Data/static_water_body_fraction";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_vegetation_opacity_option1 {
String long_name "The measured opacity of the vegetation in the grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 10.00000000;
Float32 _FillValue -9999.000000;
String origname "vegetation_opacity_option1";
String fullnamepath "/Soil_Moisture_Retrieval_Data/vegetation_opacity_option1";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_boresight_incidence {
String units "degrees";
Float32 valid_min 0.000000000;
String long_name "Representative angle between the antenna boresight vector and the normal to the Earth's surface for all footprints within the cell.";
Float32 valid_max 90.00000000;
Float32 _FillValue -9999.000000;
String origname "boresight_incidence";
String fullnamepath "/Soil_Moisture_Retrieval_Data/boresight_incidence";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_time_utc {
String long_name "Arithmetic average of the acquisition time of all of the brightness temperature footprints with a center that falls within the EASE grid cell in UTC.";
String origname "tb_time_utc";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_time_utc";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_vegetation_opacity {
String long_name "The measured opacity of the vegetation in the grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 10.00000000;
Float32 _FillValue -9999.000000;
String origname "vegetation_opacity";
String fullnamepath "/Soil_Moisture_Retrieval_Data/vegetation_opacity";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_qual_flag_h {
String long_name "Bit flags that represent the quality of the horizontal polarization brightness temperature within each grid cell";
UInt16 _FillValue 65534;
String flag_masks "1s, 2s, 4s, 8s, 16s, 32s, 64s, 128s, 256s, 512s, 1024s, 2048s, 4096s, 8192s, 16384s, 32768s";
String flag_meanings "Horizontal_polarization_quality Horizontal_polarization_range Horizontal_polarization_RFI_detection Horizontal_polarization_RFI_correction Horizontal_polarization_NEDT Horizontal_polarization_direct_sun_correction Horizontal_polarization_reflected_sun_correction Horizontal_polarization_reflected_moon_correction Horizontal_polarization_direct_galaxy_correction Horizontal_polarization_reflected_galaxy_correction Horizontal_polarization_atmosphere_correction Horizontal_polarization_Faraday_rotation_correction Horizontal_polarization_null_value_bit Horizontal_polarization_water_correction Horizontal_polarization_RFI_check Horizontal_polarization_RFI_clean";
String origname "tb_qual_flag_h";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_qual_flag_h";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_roughness_coefficient {
String long_name "A unitless value that is indicative of bare soil roughness within the 36 km grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "roughness_coefficient";
String fullnamepath "/Soil_Moisture_Retrieval_Data/roughness_coefficient";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_vegetation_opacity_option2 {
String long_name "The measured opacity of the vegetation in the grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 10.00000000;
Float32 _FillValue -9999.000000;
String origname "vegetation_opacity_option2";
String fullnamepath "/Soil_Moisture_Retrieval_Data/vegetation_opacity_option2";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_landcover_class {
Byte _FillValue 254;
String long_name "An enumerated type that specifies the most common landcover class in the grid cell based on the IGBP landcover map.";
String origname "landcover_class";
String fullnamepath "/Soil_Moisture_Retrieval_Data/landcover_class";
}
Soil_Moisture_Retrieval_Data_EASE_row_index {
String long_name "The row index of the 36 km EASE grid cell that contains the associated data.";
UInt16 valid_min 0;
UInt16 valid_max 405;
UInt16 _FillValue 65534;
String origname "EASE_row_index";
String fullnamepath "/Soil_Moisture_Retrieval_Data/EASE_row_index";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_h_uncorrected {
String units "Kelvin";
Float32 valid_min 0.000000000;
String long_name "Horizontal polarization brightness temperature in 36 km Earth grid cell before adjustment for the presence of water bodies.";
Float32 valid_max 330.0000000;
Float32 _FillValue -9999.000000;
String origname "tb_h_uncorrected";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_h_uncorrected";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_v_corrected {
String units "Kelvin";
Float32 valid_min 0.000000000;
String long_name "Vertical polarization brightness temperature in 36 km Earth grid cell after adjustment for the presence of water bodies.";
Float32 valid_max 330.0000000;
Float32 _FillValue -9999.000000;
String origname "tb_v_corrected";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_v_corrected";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_4_corrected {
String units "Kelvin";
Float32 valid_min -50.00000000;
String long_name "Fourth stokes parameter for each 36 km grid cell calculated with an adjustment for the presence of water bodies";
Float32 valid_max 50.00000000;
Float32 _FillValue -9999.000000;
String origname "tb_4_corrected";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_4_corrected";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_longitude_centroid {
String units "degrees";
Float32 valid_min -180.0000000;
String long_name "Weighted average of the longitude of the center of the brightness temperature footprints that fall within the EASE grid cell.";
Float32 valid_max 179.9989929;
Float32 _FillValue -9999.000000;
String origname "longitude_centroid";
String fullnamepath "/Soil_Moisture_Retrieval_Data/longitude_centroid";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_soil_moisture_option1 {
String long_name "Representative soil moisture measurement for the Earth based grid cell.";
Float32 valid_min 0.01999999955;
Float32 valid_max 0.5000000000;
Float32 _FillValue -9999.000000;
String units "cm**3/cm**3";
String origname "soil_moisture_option1";
String fullnamepath "/Soil_Moisture_Retrieval_Data/soil_moisture_option1";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_retrieval_qual_flag_option2 {
String long_name "Bit flags that record the conditions and the quality of the retrieval algorithms that generate soil moisture within each grid cell";
UInt16 _FillValue 65534;
String flag_masks "1s, 2s, 4s, 8s";
String flag_meanings "Soil_moisture_retrieval_recommended Soil_moisture_retrieval_attempted Soil_moisture_retrieval_success FT_retrieval_success";
String origname "retrieval_qual_flag_option2";
String fullnamepath "/Soil_Moisture_Retrieval_Data/retrieval_qual_flag_option2";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_longitude {
String long_name "Longitude of the center of the Earth based grid cell.";
String units "degrees_east";
String origname "longitude";
String fullnamepath "/Soil_Moisture_Retrieval_Data/longitude";
}
Soil_Moisture_Retrieval_Data_retrieval_qual_flag_option1 {
UInt16 _FillValue 65534;
String flag_masks "1s, 2s, 4s, 8s";
String flag_meanings "Soil_moisture_retrieval_recommended Soil_moisture_retrieval_attempted Soil_moisture_retrieval_success FT_retrieval_success";
String long_name "Bit flags that record the conditions and the quality of the retrieval algorithms that generate soil moisture within each grid cell";
String origname "retrieval_qual_flag_option1";
String fullnamepath "/Soil_Moisture_Retrieval_Data/retrieval_qual_flag_option1";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_landcover_class_fraction {
Float32 valid_min 0.000000000;
String long_name "The fraction of the grid cell that contains the most common land cover in that area based on the IGBP landcover map.";
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "landcover_class_fraction";
String fullnamepath "/Soil_Moisture_Retrieval_Data/landcover_class_fraction";
}
Soil_Moisture_Retrieval_Data_latitude {
String long_name "Latitude of the center of the Earth based grid cell.";
String units "degrees_north";
String origname "latitude";
String fullnamepath "/Soil_Moisture_Retrieval_Data/latitude";
}
Soil_Moisture_Retrieval_Data_retrieval_qual_flag {
String long_name "Bit flags that record the conditions and the quality of the retrieval algorithms that generate soil moisture within each grid cell";
UInt16 _FillValue 65534;
String flag_masks "1s, 2s, 4s, 8s";
String flag_meanings "Soil_moisture_retrieval_recommended Soil_moisture_retrieval_attempted Soil_moisture_retrieval_success FT_retrieval_success";
String origname "retrieval_qual_flag";
String fullnamepath "/Soil_Moisture_Retrieval_Data/retrieval_qual_flag";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_vegetation_water_content {
String long_name "Representative measure of water in the vegetation within the 36 km grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 20.00000000;
Float32 _FillValue -9999.000000;
String units "kg/m**2";
String origname "vegetation_water_content";
String fullnamepath "/Soil_Moisture_Retrieval_Data/vegetation_water_content";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_v_uncorrected {
String units "Kelvin";
Float32 valid_min 0.000000000;
String long_name "Vertical polarization brightness temperature in 36 km Earth grid cell before adjustment for the presence of water bodies.";
Float32 valid_max 330.0000000;
Float32 _FillValue -9999.000000;
String origname "tb_v_uncorrected";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_v_uncorrected";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_soil_moisture_option3 {
String long_name "Representative soil moisture measurement for the Earth based grid cell.";
Float32 valid_min 0.01999999955;
Float32 valid_max 0.5000000000;
Float32 _FillValue -9999.000000;
String units "cm**3/cm**3";
String origname "soil_moisture_option3";
String fullnamepath "/Soil_Moisture_Retrieval_Data/soil_moisture_option3";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_surface_water_fraction_mb_h {
String long_name "Gain weighted fraction of static water within the radiometer horizontal polarization brightness temperature antenna pattern in 36 km Earth grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "surface_water_fraction_mb_h";
String fullnamepath "/Soil_Moisture_Retrieval_Data/surface_water_fraction_mb_h";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_soil_moisture {
String long_name "Representative soil moisture measurement for the Earth based grid cell.";
Float32 valid_min 0.01999999955;
Float32 valid_max 0.5000000000;
Float32 _FillValue -9999.000000;
String units "cm**3/cm**3";
String origname "soil_moisture";
String fullnamepath "/Soil_Moisture_Retrieval_Data/soil_moisture";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_3_corrected {
String units "Kelvin";
Float32 valid_min -50.00000000;
String long_name "Third stokes parameter for each 36 km grid cell calculated with an adjustment for the presence of water bodies";
Float32 valid_max 50.00000000;
Float32 _FillValue -9999.000000;
String origname "tb_3_corrected";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_3_corrected";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_qual_flag_3 {
String long_name "Bit flags that represent the quality of the 3rd Stokes brightness temperature within each grid cell";
UInt16 _FillValue 65534;
String flag_masks "1s, 2s, 4s, 8s, 16s, 32s, 64s, 128s, 256s, 512s, 1024s, 4096s, 16384s, 32768s";
String flag_meanings "3rd_Stokes_quality 3rd_Stokes_range 3rd_Stokes_RFI_detection 3rd_Stokes_RFI_correction 3rd_Stokes_NEDT 3rd_Stokes_direct_sun_correction 3rd_Stokes_reflected_sun_correction 3rd_Stokes_reflected_moon_correction 3rd_Stokes_direct_galaxy_correction 3rd_Stokes_reflected_galaxy_correction 3rd_Stokes_atmosphere_correction 3rd_Stokes_null_value_bit 3rd_Stokes_RFI_check 3rd_Stokes_RFI_clean";
String origname "tb_qual_flag_3";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_qual_flag_3";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_qual_flag_4 {
String long_name "Bit flags that represent the quality of the 4th Stokes brightness temperature within each grid cell";
UInt16 _FillValue 65534;
String flag_masks "1s, 2s, 4s, 8s, 16s, 32s, 64s, 128s, 256s, 512s, 1024s, 4096s, 16384s, 32768s";
String flag_meanings "4th_Stokes_quality 4th_Stokes_range 4th_Stokes_RFI_detection 4th_Stokes_RFI_correction 4th_Stokes_NEDT 4th_Stokes_direct_sun_correction 4th_Stokes_reflected_sun_correction 4th_Stokes_reflected_moon_correction 4th_Stokes_direct_galaxy_correction 4th_Stokes_reflected_galaxy_correction 4th_Stokes_atmosphere_correction 4th_Stokes_null_value_bit 4th_Stokes_RFI_check 4th_Stokes_RFI_clean";
String origname "tb_qual_flag_4";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_qual_flag_4";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_h_corrected {
String units "Kelvin";
Float32 valid_min 0.000000000;
String long_name "Horizontal polarization brightness temperature in 36 km Earth grid cell after adjustment for the presence of water bodies.";
Float32 valid_max 330.0000000;
Float32 _FillValue -9999.000000;
String origname "tb_h_corrected";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_h_corrected";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_surface_water_fraction_mb_v {
String long_name "Gain weighted fraction of static water within the radiometer vertical polarization brightness temperature antenna pattern in 36 km Earth grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "surface_water_fraction_mb_v";
String fullnamepath "/Soil_Moisture_Retrieval_Data/surface_water_fraction_mb_v";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_soil_moisture_option2 {
String long_name "Representative soil moisture measurement for the Earth based grid cell.";
Float32 valid_min 0.01999999955;
Float32 valid_max 0.5000000000;
Float32 _FillValue -9999.000000;
String units "cm**3/cm**3";
String origname "soil_moisture_option2";
String fullnamepath "/Soil_Moisture_Retrieval_Data/soil_moisture_option2";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_albedo {
String long_name "Diffuse reflecting power of the Earth's surface within the grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "albedo";
String fullnamepath "/Soil_Moisture_Retrieval_Data/albedo";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_grid_surface_status {
String long_name "Indicates if the grid point lies on land (0) or water (1).";
UInt16 valid_min 0;
UInt16 valid_max 1;
UInt16 _FillValue 65534;
String origname "grid_surface_status";
String fullnamepath "/Soil_Moisture_Retrieval_Data/grid_surface_status";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_time_seconds {
String units "seconds";
Float64 valid_min -999999.90000000002;
String long_name "Arithmetic average of the acquisition time of all of the brightness temperature footprints with a center that falls within the EASE grid cell in seconds since noon on January 1, 2000 UTC.";
Float64 valid_max 940000000.00000000;
Float64 _FillValue -9999.0000000000000;
String origname "tb_time_seconds";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_time_seconds";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_bulk_density {
String long_name "The aggregated bulk density, as used in the soil moisture retrieval, within the 36 km grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "bulk_density";
String fullnamepath "/Soil_Moisture_Retrieval_Data/bulk_density";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_soil_moisture_error {
String units "cm**3/cm**3";
Float32 valid_min 0.000000000;
String long_name "Net uncertainty measure of soil moisture measure for the Earth based grid cell. - Calculation method is TBD.";
Float32 valid_max 0.2000000030;
Float32 _FillValue -9999.000000;
String origname "soil_moisture_error";
String fullnamepath "/Soil_Moisture_Retrieval_Data/soil_moisture_error";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_radar_water_body_fraction {
String long_name "The fraction of the area of the 36 km grid cell that is covered by water based on the radar detection algorithm.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "radar_water_body_fraction";
String fullnamepath "/Soil_Moisture_Retrieval_Data/radar_water_body_fraction";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_tb_qual_flag_v {
String long_name "Bit flags that represent the quality of the vertical polarization brightness temperature within each grid cell";
UInt16 _FillValue 65534;
String flag_masks "1s, 2s, 4s, 8s, 16s, 32s, 64s, 128s, 256s, 512s, 1024s, 2048s, 4096s, 8192s, 16384s, 32768s";
String flag_meanings "Vertical_polarization_quality Vertical_polarization_range Vertical_polarization_RFI_detection Vertical_polarization_RFI_correction Vertical_polarization_NEDT Vertical_polarization_direct_sun_correction Vertical_polarization_reflected_sun_correction Vertical_polarization_reflected_moon_correction Vertical_polarization_direct_galaxy_correction Vertical_polarization_reflected_galaxy_correction Vertical_polarization_atmosphere_correction Vertical_polarization_Faraday_rotation_correction Vertical_polarization_null_value_bit Vertical_polarization_water_correction Vertical_polarization_RFI_check Vertical_polarization_RFI_clean";
String origname "tb_qual_flag_v";
String fullnamepath "/Soil_Moisture_Retrieval_Data/tb_qual_flag_v";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_latitude_centroid {
String units "degrees";
Float32 valid_min -90.00000000;
String long_name "Weighted average of the latitude of the center of the brightness temperature footprints that fall within the EASE grid cell.";
Float32 valid_max 90.00000000;
Float32 _FillValue -9999.000000;
String origname "latitude_centroid";
String fullnamepath "/Soil_Moisture_Retrieval_Data/latitude_centroid";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_retrieval_qual_flag_option3 {
String long_name "Bit flags that record the conditions and the quality of the retrieval algorithms that generate soil moisture within each grid cell";
UInt16 _FillValue 65534;
String flag_masks "1s, 2s, 4s, 8s";
String flag_meanings "Soil_moisture_retrieval_recommended Soil_moisture_retrieval_attempted Soil_moisture_retrieval_success FT_retrieval_success";
String origname "retrieval_qual_flag_option3";
String fullnamepath "/Soil_Moisture_Retrieval_Data/retrieval_qual_flag_option3";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_EASE_column_index {
String long_name "The column index of the 36 km EASE grid cell that contains the associated data.";
UInt16 valid_min 0;
UInt16 valid_max 963;
UInt16 _FillValue 65534;
String origname "EASE_column_index";
String fullnamepath "/Soil_Moisture_Retrieval_Data/EASE_column_index";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_surface_temperature {
String long_name "Temperature at land surface based on GMAO GEOS-5 data.";
String units "Kelvins";
Float32 valid_min 0.000000000;
Float32 valid_max 350.0000000;
Float32 _FillValue -9999.000000;
String origname "surface_temperature";
String fullnamepath "/Soil_Moisture_Retrieval_Data/surface_temperature";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_vegetation_opacity_option3 {
String long_name "The measured opacity of the vegetation in the grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 10.00000000;
Float32 _FillValue -9999.000000;
String origname "vegetation_opacity_option3";
String fullnamepath "/Soil_Moisture_Retrieval_Data/vegetation_opacity_option3";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_freeze_thaw_fraction {
String long_name "Fraction of the 36 km grid cell that is denoted as frozen. Based on binary flag that specifies freeze thaw conditions in each of the component 3 km grid cells.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "freeze_thaw_fraction";
String fullnamepath "/Soil_Moisture_Retrieval_Data/freeze_thaw_fraction";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_surface_flag {
String long_name "Bit flags that record ambient surface conditions within each grid cell";
UInt16 _FillValue 65534;
String flag_masks "1s, 2s, 4s, 8s, 16s, 32s, 64s, 128s, 256s, 512s, 1024s, 2048s";
String flag_meanings "36_km_static_water_body 36_km_radar_water_body_detection 36_km_coastal_proximity 36_km_urban_area 36_km_precipitation 36_km_snow_or_ice 36_km_permanent_snow_or_ice 36_km_radiometer_frozen_ground 36_km_model_frozen_ground 36_km_mountainous_terrain 36_km_dense_vegetation 36_km_nadir_region";
String origname "surface_flag";
String fullnamepath "/Soil_Moisture_Retrieval_Data/surface_flag";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
Soil_Moisture_Retrieval_Data_clay_fraction {
String long_name "The aggregated clay fraction, as used in the soil moisture retrieval, within the 36 km grid cell.";
Float32 valid_min 0.000000000;
Float32 valid_max 1.000000000;
Float32 _FillValue -9999.000000;
String origname "clay_fraction";
String fullnamepath "/Soil_Moisture_Retrieval_Data/clay_fraction";
String coordinates "Soil_Moisture_Retrieval_Data_latitude Soil_Moisture_Retrieval_Data_longitude";
}
}