{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Stefanie Kagone (CTR)", "hasEmail": "mailto:skagone@contractor.usgs.gov"}, "description": "The surface psychrometric constant (spc) is a key model parameter in actual evapotranspiration modeling using the Operational Simplified Surface Energy Balance (SSEBop) model for establishing model boundary limits for the dry/bare and wet/vegetated surface conditions. The inverse of the constant (1/spc) represents the temperature difference (dT) between the bare/dry surface and the air temperature at the canopy level. The main output of the SSEBop model is an ET fraction (0-1) and, when combined with reference (\u201cmaximum\u201d) ET, produces an actual ET estimate from satellite-observed land surface temperature. This dT is determined using net radiation inputs under gray-sky radiations from the ERA-5 datasets, i.e.,  Surface Solar Radiation Downwards instead of clear-sky assumptions used for the previous dT versions. The dT estimates are adjusted for elevation effects using established equations.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9JBW6R9", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.623a0aecd34e915b67cddd21.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_623a0aecd34e915b67cddd21", "keyword": ["ET modeling", "SSEBop model", "USGS:623a0aecd34e915b67cddd21", "air temperature", "climatologyMeteorologyAtmosphere", "geoscientificInformation", "net radiation", "psychrometric constant"], "modified": "2022-04-06T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "179.9906, -89.0207, -180.0000, 83.6922", "theme": ["geospatial"], "title": "Global gray-sky dT: the inverse of the surface psychrometric constant parameter in the SSEBop evapotranspiration model"}