{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "NSIDC Services", "hasEmail": "mailto:nsidc@nsidc.org"}, "description": "This sea ice concentration data set was derived using measurements from the Scanning Multichannel Microwave Radiometer (SMMR) on the Nimbus-7 satellite and from the Special Sensor Microwave/Imager (SSM/I) sensors on the Defense Meteorological Satellite Program's (DMSP) -F8, -F11, and -F13 satellites. Measurements from the Special Sensor Microwave Imager/Sounder (SSMIS) aboard DMSP-F17 are also included. The data set has been generated using the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) Bootstrap Algorithm with daily varying tie-points. Daily (every other day prior to July 1987) and monthly data are available for both the north and south polar regions. Data are gridded on the SSM/I polar stereographic grid (25 x 25 km) and provided in two-byte integer format.  Data coverage began on 01 November 1978 and is ongoing through the most current processing, with updated data processed several times annually.", "distribution": [{"@type": "dcat:Distribution", "description": "Direct download via HTTPS protocol.", "downloadURL": "https://n5eil01u.ecs.nsidc.org/PM/NSIDC-0079.004/", "format": "HTML", "mediaType": "text/html", "title": "Download this dataset"}, {"@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/X5LG68MH013O", "format": "HTML", "mediaType": "text/html", "title": "View documentation related to 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=NSIDC-0079+V004", "format": "HTML", "mediaType": "text/html", "title": "Download this dataset through Earthdata Search"}, {"@type": "dcat:Distribution", "description": "Provides access to data, documentation, tools, citation information, support, and other resources.", "downloadURL": "https://doi.org/10.5067/X5LG68MH013O", "format": "HTML", "mediaType": "text/html", "title": "This dataset's landing page"}, {"@type": "dcat:Distribution", "description": "Search and filter data files using a map-based interface", "downloadURL": "https://nsidc.org/data/data-access-tool/NSIDC-0079/versions/4/", "format": "HTML", "mediaType": "text/html", "title": "Download this dataset"}, {"@type": "dcat:Distribution", "description": "Search results for publications that cite this dataset by its DOI.", "downloadURL": "https://scholar.google.com/scholar?q=10.5067%2FX5LG68MH013O", "format": "HTML", "mediaType": "text/html", "title": "Google Scholar search results"}], "identifier": "C2794540918-NSIDC_ECS", "issued": "1978-11-01", "keyword": ["cryosphere", "earth-science", "sea-ice"], "landingPage": "https://doi.org/10.5067/X5LG68MH013O", "language": ["en-US"], "modified": "2025-03-31", "programCode": ["026:001"], "publisher": {"@type": "org:Organization", "name": "NASA NSIDC DAAC"}, "spatial": "-180.0 30.0 180.0 90.0", "temporal": "1978-11-01T00:00:00Z/2025-01-27T00:00:00Z", "theme": ["geospatial"], "title": "Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS V004"}