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CGF_NDSI_Snow_Cover[
/YDim=
0..2399]
[
/XDim=
0..2399]
(Type is Byte)
-
attributes
-
coordinates:
Latitude Longitude
(Type is String)
-
long_name:
cloud-gap-filled NDSI snow cover
(Type is String)
-
valid_range:
0, 100
(Type is Byte)
-
_FillValue:
255
(Type is Byte)
-
Key:
0-100=NDSI snow, 200=missing data, 201=no decision, 211=night, 237=inland water, 239=ocean, 250=cloud, 254=detector saturated, 255=fill
(Type is String)
-
grid_mapping:
MOD_Grid_Snow_500m_eos_cf_projection
(Type is String)
Cloud_Persistence[
/YDim=
0..2399]
[
/XDim=
0..2399]
(Type is Byte)
-
attributes
-
coordinates:
Latitude Longitude
(Type is String)
-
long_name:
cloud persistence for preceding days
(Type is String)
-
valid_range:
0, 254
(Type is Byte)
-
_FillValue:
255
(Type is Byte)
-
Key:
count of consecutive preceding days of cloud cover
(Type is String)
-
grid_mapping:
MOD_Grid_Snow_500m_eos_cf_projection
(Type is String)
Basic_QA[
/YDim=
0..2399]
[
/XDim=
0..2399]
(Type is Byte)
-
attributes
-
coordinates:
Latitude Longitude
(Type is String)
-
long_name:
CGF snow cover general quality value
(Type is String)
-
valid_range:
0, 4
(Type is Byte)
-
_FillValue:
255
(Type is Byte)
-
Key:
0=best, 1=good, 2=ok, 3=poor-not used, 4=other-not used, 211=night, 239=ocean, 255=unusable L1B data or no data
(Type is String)
-
grid_mapping:
MOD_Grid_Snow_500m_eos_cf_projection
(Type is String)
Algorithm_Flags_QA[
/YDim=
0..2399]
[
/XDim=
0..2399]
(Type is Byte)
-
attributes
-
coordinates:
Latitude Longitude
(Type is String)
-
long_name:
CGF algorithm bit flags
(Type is String)
-
format:
bit flag
(Type is String)
-
Key:
bit on means:
bit 0: inland water flag
bit 1: low visible screen failed, reversed snow detection
bit 2: low NDSI screen failed, reversed snow detection
bit 3: combined temperature and height screen failed, snow reversed because too warm and too low
This screen is also used to flag a high elevation too warm snow detection,
in this case the snow detection is not changed but this bit is set.
bit 4: too high swir screen and applied at two thresholds:
QA bit flag set if band6 TOA > 25% & band6 TOA <= 45%,
indicative of unusual snow conditon, or snow commission error;
snow detection reversed if band6 TOA > 45%
bit 5: MOD35_L2 probably cloudy
bit 6: MOD35_L2 probably clear
bit 7: solar zenith screen, indicates increased uncertainty in results
(Type is String)
-
grid_mapping:
MOD_Grid_Snow_500m_eos_cf_projection
(Type is String)
MYD10A1_NDSI_Snow_Cover[
/YDim=
0..2399]
[
/XDim=
0..2399]
(Type is Byte)
-
attributes
-
coordinates:
Latitude Longitude
(Type is String)
-
long_name:
NDSI snow cover from current day MYD10A1
(Type is String)
-
valid_range:
0, 100
(Type is Byte)
-
_FillValue:
255
(Type is Byte)
-
Key:
0-100=NDSI snow, 200=missing data, 201=no decision, 211=night, 237=inland water, 239=ocean, 250=cloud, 254=detector saturated, 255=fill
(Type is String)
-
grid_mapping:
MOD_Grid_Snow_500m_eos_cf_projection
(Type is String)
Latitude[
/YDim=
0..2399]
[
/XDim=
0..2399]
(Type is Float64)
Longitude[
/YDim=
0..2399]
[
/XDim=
0..2399]
(Type is Float64)
YDim[
/YDim=
0..2399]
(Type is Float64)
-
attributes
-
standard_name:
projection_y_coordinate
(Type is String)
-
long_name:
y coordinate of projection for grid MOD_Grid_Snow_500m
(Type is String)
-
units:
meter
(Type is String)
-
_CoordinateAxisType:
GeoY
(Type is String)
XDim[
/XDim=
0..2399]
(Type is Float64)
-
attributes
-
standard_name:
projection_x_coordinate
(Type is String)
-
long_name:
x coordinate of projection for grid MOD_Grid_Snow_500m
(Type is String)
-
units:
meter
(Type is String)
-
_CoordinateAxisType:
GeoX
(Type is String)
MOD_Grid_Snow_500m_eos_cf_projection(Type is Byte)
-
attributes
-
grid_mapping_name:
sinusoidal
(Type is String)
-
longitude_of_central_meridian:
0.0
(Type is Float64)
-
earth_radius:
6371007.181
(Type is Float64)
-
_CoordinateAxisTypes:
GeoX GeoY
(Type is String)
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