SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture V006
This enhanced Level-2 (L2) product contains calibrated, 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 maximum information from SMAP antenna temperatures and convert them to brightness temperatures, which are posted to the 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) in a global cylindrical projection [available as the SPl1CTB_E product]. As of 2021, the data are also posted to the Northern Hemisphere EASE-Grid 2.0, an azimuthal equal-area projection. These 9-km brightness temperatures are then used to retrieve surface soil moisture posted on the 9-km grid [this SPL2SMP_E product].
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "026:00" ] |
| contactPoint |
{ "fn": "NSIDC Services", "@type": "vcard:Contact", "hasEmail": "mailto:nsidc@nsidc.org" } |
| description | This enhanced Level-2 (L2) product contains calibrated, 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 maximum information from SMAP antenna temperatures and convert them to brightness temperatures, which are posted to the 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0) in a global cylindrical projection [available as the SPl1CTB_E product]. As of 2021, the data are also posted to the Northern Hemisphere EASE-Grid 2.0, an azimuthal equal-area projection. These 9-km brightness temperatures are then used to retrieve surface soil moisture posted on the 9-km grid [this SPL2SMP_E product]. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Download this dataset", "format": "HTML", "mediaType": "text/html", "description": "Direct download via HTTPS protocol.", "downloadURL": "https://n5eil01u.ecs.nsidc.org/SMAP/SPL2SMP_E.006/" }, { "@type": "dcat:Distribution", "title": "View documentation related to this dataset", "format": "HTML", "mediaType": "text/html", "description": "Includes a user's guide, supplemental documents like ATBDs and academic papers, How Tos, FAQs, etc.", "downloadURL": "https://doi.org/10.5067/BN36FXOMMC4C" }, { "@type": "dcat:Distribution", "title": "Download this dataset through Earthdata Search", "format": "HTML", "mediaType": "text/html", "description": "NASA's newest search and order tool for subsetting, reprojecting, and reformatting data.", "downloadURL": "https://search.earthdata.nasa.gov/search?q=SPL2SMP_E+V006" }, { "@type": "dcat:Distribution", "title": "Download this dataset", "format": "HTML", "mediaType": "text/html", "description": "Search and filter data files using a map-based interface", "downloadURL": "https://nsidc.org/data/data-access-tool/SPL2SMP_E/versions/6/" }, { "@type": "dcat:Distribution", "title": "Google Scholar search results", "format": "HTML", "mediaType": "text/html", "description": "Search results for publications that cite this dataset by its DOI.", "downloadURL": "https://scholar.google.com/scholar?q=10.5067%2FBN36FXOMMC4C" }, { "@type": "dcat:Distribution", "title": "Get a related visualization through WORLDVIEW", "format": "HTML", "mediaType": "text/html", "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.", "downloadURL": "https://worldview.earthdata.nasa.gov/?v=-203%2C-77%2C152%2C87&l=SMAP_L2_Passive_Enhanced_Night_Soil_Moisture_Option3%2CSMAP_L2_Passive_Enhanced_Night_Soil_Moisture_Option2%2CSMAP_L2_Passive_Enhanced_Night_Soil_Moisture_Option1%2CSMAP_L2_Passive_Enhanced_Day_Soil_Moisture_Option3%2CSMAP_L2_Passive_Enhanced_Day_Soil_Moisture_Option2%2CSMAP_L2_Passive_Enhanced_Day_Soil_Moisture_Option1%2CCoastlines_15m%2CMODIS_Terra_CorrectedReflectance_TrueColor" } ] |
| identifier | C2776463773-NSIDC_ECS |
| issued | 2015-03-31 |
| keyword |
[ "earth-science", "land-surface", "microwave", "soils", "spectral-engineering" ] |
| landingPage | https://doi.org/10.5067/BN36FXOMMC4C |
| language |
[ "en-US" ] |
| modified | 2025-07-17 |
| programCode |
[ "026:001" ] |
| publisher |
{ "name": "NASA NSIDC DAAC", "@type": "org:Organization" } |
| spatial | -180.0 -85.044 180.0 90.0 |
| temporal | 2015-03-31T00:00:00Z/2025-03-24T00:00:00Z |
| theme |
[ "geospatial" ] |
| title | SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture V006 |
