Dataset Information

HDFEOSVersion: HDFEOS_V2.17
L1BCalibrationQuality: marginal
L1BMissionPhase: EXECUTION
L1BNadirPointing: Y
L1BVersionID: 2000-03-05
HDFEOS_FractionalOffset_Along_swath_lines_500m_MOD_Swath_Snow: 0.5000000000
HDFEOS_FractionalOffset_Cross_swath_pixels_500m_MOD_Swath_Snow: 0.000000000
Total_Land_Pixel_Count: 0
Surface_temperature_threshold: Estimated surface temperature threshold is >= 281 K
Surface_height_threshold: Estimated Surface height threshold is <=1300 m
identifier_product_doi: 10.5067/MODIS/MOD10_L2.006
identifier_product_doi_authority: http://dx.doi.org


Variables in this Dataset

NDSI_Snow_Cover: Array of Bytes [Along_swath_lines_500m = 0..4059][Cross_swath_pixels_500m = 0..2707]
coordinates: Latitude Longitude
long_name: NDSI snow cover, 500m
units: none
valid_range: 0, 100
_FillValue: 255
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
Nadir_data_resolution: 500 m
Valid_EV_Obs_Band_1____: 4.926008224
Valid_EV_Obs_Band_2____: 4.926108360
Valid_EV_Obs_Band_4____: 4.926072121
Valid_EV_Obs_Band_6____: 4.254044056
Saturated_EV_Obs_Band_1____: 0.000000000
Saturated_EV_Obs_Band_2____: 0.000000000
Saturated_EV_Obs_Band_4____: 0.000000000
Saturated_EV_Obs_Band_6____: 0.000000000
NDSI_Snow_Cover_Basic_QA: Array of Bytes [Along_swath_lines_500m = 0..4059][Cross_swath_pixels_500m = 0..2707]
coordinates: Latitude Longitude
long_name: NDSI snow cover general quality value
units: none
valid_range: 0, 4
_FillValue: 255
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
NDSI_Snow_Cover_Algorithm_Flags_QA: Array of Bytes [Along_swath_lines_500m = 0..4059][Cross_swath_pixels_500m = 0..2707]
coordinates: Latitude Longitude
long_name: NDSI snow cover algorithm flags
units: none
format: bit flag
valid_range: 0, 254
_FillValue: 255
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: spare bit 6: spare bit 7: solar zenith screen, indicates increased uncertainty in results
NDSI: Array of 16 bit Integers [Along_swath_lines_500m = 0..4059][Cross_swath_pixels_500m = 0..2707]
coordinates: Latitude Longitude
long_name: Raw NDSI (Normalized Difference Snow Index) layer
units: none
valid_range: 0, 10000
scale_factor: 9.999999747e-05
Latitude: Array of 32 bit Reals [Along_swath_lines_500m = 0..4059][Cross_swath_pixels_500m = 0..2707]
units: degrees_north
long_name: Coarse 5 km resolution latitude
valid_range: -90.00000000, 90.00000000
_FillValue: -999.0000000
source: MOD03 geolocation product; data read from center pixel in 5 km box
Longitude: Array of 32 bit Reals [Along_swath_lines_500m = 0..4059][Cross_swath_pixels_500m = 0..2707]
units: degrees_east
long_name: Coarse 5 km resolution longitude
valid_range: -180.0000000, 180.0000000
_FillValue: -999.0000000
source: MOD03 geolocation product; data read from center pixel in 5 km box