SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures, Version 6
Data set id:
SPL1BTB
DOI: 10.5067/GWYQTF307Y9Y
This is the most recent version of these data.
Version Summary
Version Summary
Changes to this version include:
• A new 1-km land-water mask based on the MODIS44w V6 data is used to determine land-water Tb corrections. The mask:
o more accurately portrays current coastal and inland water body boundaries
o adds an ice shelf type to determine an ice shelf fraction for a given footprint or grid cell, reflected in new data elements ice_shelf_fraction_h and ice_shelf_fraction_v
• The maximum Tb threshold has been reduced from 340K to 310K to further remove RFI contamination
For the full major and minor version history, go to https://nsidc.org/data/smap/version-history
• A new 1-km land-water mask based on the MODIS44w V6 data is used to determine land-water Tb corrections. The mask:
o more accurately portrays current coastal and inland water body boundaries
o adds an ice shelf type to determine an ice shelf fraction for a given footprint or grid cell, reflected in new data elements ice_shelf_fraction_h and ice_shelf_fraction_v
• The maximum Tb threshold has been reduced from 340K to 310K to further remove RFI contamination
For the full major and minor version history, go to https://nsidc.org/data/smap/version-history
Overview
This Level-1B (L1B) product provides calibrated estimates of time-ordered geolocated brightness temperatures measured by the Soil Moisture Active Passive (SMAP) passive microwave radiometer. SMAP L-band brightness temperatures are referenced to the Earth's surface with undesired and erroneous radiometric sources removed.
Parameter(s):
BRIGHTNESS TEMPERATURE
Platform(s):
SMAP
Sensor(s):
SMAP L-BAND RADIOMETER
Data Format(s):
HDF5
Temporal Coverage:
- 31 March 2015 to present
Temporal Resolution:
- 49 minute
Spatial Resolution:
- 47 km
- 36 km
Spatial Reference System(s):
- WGS 84EPSG:4326
Spatial Coverage:
- N:86.4S:-86.4E:180W:-180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.
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This article covers frequently asked questions about the NASA NSIDC DAAC's Earthdata cloud migration project and what it means to data users.
SMAP Ancillary data sets are used to produce SMAP Level-1, -2, -3, and -4 standard data products.
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