{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "NSIDC Services", "hasEmail": "mailto:nsidc@nsidc.org"}, "description": "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.", "distribution": [{"@type": "dcat:Distribution", "description": "Search results for publications that cite this dataset by its DOI.", "downloadURL": "https://scholar.google.com/scholar?q=10.5067%2F99LHDR3NUM47", "format": "HTML", "mediaType": "text/html", "title": "Google Scholar search results"}, {"@type": "dcat:Distribution", "description": "Direct download via HTTPS protocol.", "downloadURL": "https://n5eil01u.ecs.nsidc.org/SMAP/SPL1CTB_E.004/", "format": "HTML", "mediaType": "text/html", "title": "Download this dataset"}, {"@type": "dcat:Distribution", "description": "NASA's newest search and order tool for subsetting, reprojecting, and reformatting data.", "downloadURL": "https://search.earthdata.nasa.gov/search?q=SPL1CTB_E+V004", "format": "HTML", "mediaType": "text/html", "title": "Download this dataset through Earthdata Search"}, {"@type": "dcat:Distribution", "description": "Search and filter data files using a map-based interface", "downloadURL": "https://nsidc.org/data/data-access-tool/SPL1CTB_E/versions/4/", "format": "HTML", "mediaType": "text/html", "title": "Download this dataset"}, {"@type": "dcat:Distribution", "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=-184%2C-74%2C162%2C86&l=SMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_V_QA%28disabled%3D3%29%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_V_QA%28disabled%3D3%29%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_H_QA%28disabled%3D3%29%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_H_QA%28disabled%3D3%29%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_V_RFI%28disabled%3D3%29%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_V_RFI%28disabled%3D3%29%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_H_RFI%28disabled%3D3%29%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_H_RFI%28disabled%3D3%29%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_V%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_V%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Fore_H%2CSMAP_L1_Passive_Enhanced_Brightness_Temp_Aft_H%2CCoastlines_15m%2CMODIS_Terra_CorrectedReflectance_TrueColor", "format": "HTML", "mediaType": "text/html", "title": "Get a related visualization through WORLDVIEW"}, {"@type": "dcat:Distribution", "description": "Includes a user's guide, supplemental documents like ATBDs and academic papers, How Tos, FAQs, etc.", "downloadURL": "https://doi.org/10.5067/99LHDR3NUM47", "format": "HTML", "mediaType": "text/html", "title": "View documentation related to this dataset"}], "identifier": "C2776463717-NSIDC_ECS", "issued": "2015-03-31", "keyword": ["earth-science", "microwave", "spectral-engineering"], "landingPage": "https://doi.org/10.5067/99LHDR3NUM47", "language": ["en-US"], "modified": "2025-07-17", "programCode": ["026:001"], "publisher": {"@type": "org:Organization", "name": "NASA NSIDC DAAC"}, "spatial": "-180.0 -85.044 180.0 85.044", "temporal": "2015-03-31T00:00:00Z/2025-03-24T00:00:00Z", "theme": ["geospatial"], "title": "SMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures V004"}