SMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures V004

This enhanced Level-1C (L1C) product contains calibrated and geolocated brightness temperatures acquired by the Soil Moisture Active Passive (SMAP) radiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes. This product is derived from SMAP Level-1B (L1B) interpolated antenna temperatures. Backus-Gilbert optimal interpolation techniques are used to extract enhanced information from SMAP antenna temperatures before they are converted to brightness temperatures. The resulting brightness temperatures are posted to an Earth-fixed, 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) in three projections: global cylindrical, Northern Hemisphere azimuthal, and Southern Hemisphere azimuthal.

Data and Resources

Additional Info

Field Value
Maintainer NSIDC Services
Last Updated March 31, 2025, 20:22 (UTC)
Created March 31, 2025, 20:22 (UTC)
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation SMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures V004. Version 004. Archived by National Aeronautics and Space Administration, U.S. Government, NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/99LHDR3NUM47.
graphic-preview-description This application allows you to interactively browse global satellite imagery within hours of it being acquired. You can also save it, share it, and download the underlying data.
graphic-preview-file https://worldview.earthdata.nasa.gov/?v=-184,-74,162,86&l=SMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_V_QA(disabled=3),SMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_V_QA(disabled=3),SMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_H_QA(disabled=3),SMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_H_QA(disabled=3),SMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_V_RFI(disabled=3),SMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_V_RFI(disabled=3),SMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_H_RFI(disabled=3),SMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_H_RFI(disabled=3),SMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_V,SMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_V,SMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_H,SMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_H,Coastlines_15m,MODIS_Terra_CorrectedReflectance_TrueColor
harvest_object_id f95de196-e32b-4063-90ff-ff827538616e
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C2938663435-NSIDC_CPRD
issued 2015-03-31
landingPage https://doi.org/10.5067/99LHDR3NUM47
language {en-US}
metadata_type geospatial
modified 2025-03-16
programCode {026:001}
publisher NASA NSIDC DAAC
resource-type Dataset
source_datajson_identifier true
source_hash 74ec7eb83d413d5141690d25b544ce9429b5cdd29253fe3a443dc33e558cc566
source_schema_version 1.1
spatial -180.0 -85.044 180.0 85.044
temporal 2015-03-31T00:00:00Z/2025-03-17T00:00:00Z
theme {geospatial}