{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Claudia C. Faunt", "hasEmail": "mailto:ccfaunt@usgs.gov"}, "description": "This digital dataset contains monthly reference evapotranspiration (ETo) data for the Central Valley Hydrologic \nModel (CVHM).  The Central Valley encompasses an approximate 50,000 square-kilometer region of California. \nThe complex hydrologic system of the Central Valley is simulated using the USGS numerical modeling code \nMODFLOW-FMP (Schmid and others, 2006b).  This simulation is referred to here as the CVHM (Faunt, 2009). \nUtilizing MODFLOW-FMP, the CVHM simulates groundwater and surface-water flow, irrigated agriculture, land \nsubsidence, and other key processes in the Central Valley on a monthly basis from 1961-2003.  The total active \nmodeled area is 20,334 square-miles on a finite-difference grid comprising 441 rows and 98 columns. Slightly \nless that 50 percent of the cells are active. The CVHM grid has a uniform horizontal discretization of 1x1 square \nmile and is oriented parallel to the valley axis, 34 degrees west of north (Faunt, 2009). The main climatic contributors \nto the CVHM are ETo and precipitation.  Data from Parameter-Elevation Regressions on Independent Slopes Model \n(PRISM) (Climate Source, 2006) provide the temperature and precipitation on a monthly basis for a 2-kilometer grid. \nMapping land-use type and distribution is integral to calculating the crop irrigation demand and, ultimately, the water \nuse in the Central Valley. For a given land use, the demand can be calculated from two variables: crop coefficient \n(Kc) and reference evapotranspiration (ETo).  For the CVHM, ETo is calculated from the daily minimum and maximum \nair temperatures derived from PRISM data and the extraterrestrial solar radiation (Faunt, 2009, p. 151). The CVHM is \nthe most recent regional-scale model of the Central Valley developed by the U.S. Geological Survey (USGS).  The \nCVHM was developed as part of the USGS Groundwater Resources Program (see \"Foreword\", Chapter A, page iii, \nfor details).", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P956D14I", "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.f67e9683-884b-4a89-a444-19351293ed08.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_f67e9683-884b-4a89-a444-19351293ed08", "keyword": ["Alameda County", "Amador County", "Butte County", "CV-RASA", "Calaveras County", "California", "Central Valley", "Central Valley Aquifer", "Central Valley Hydrologic Model", "Central Valley, California", "Colusa County", "Contra Costa County", "El Dorado County", "Fresno County", "Glenn County", "Groundwater Availability of the Central Valley Aquifer", "Humboldt County", "Kern County", "Kings County", "Lake County", "Madera County", "Mariposa County", "Mendocino County", "Merced County", "Monterey County", "Napa County", "Nevada County", "Placer County", "Sacramento County", "Sacramento Valley", "San Benito County", "San Joaquin County", "San Joaquin Valley", "San Luis Obispo County", "Santa Barbara County", "Santa Clara County", "Shasta County", "Solano County", "Sonoma County", "Stanislaus County", "Sutter County", "Tehama County", "Trinity County", "Tulare County", "Tuolumne County", "USGS:f67e9683-884b-4a89-a444-19351293ed08", "Ventura County", "Yolo County", "Yuba County", "boundary", "evapotranspiration", "finite-difference model grid", "grid", "groundwater", "hydrogeology", "hydrology", "inlandWaters"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-123.831528, 34.519871, -117.916328, 40.748631", "theme": ["geospatial"], "title": "Evapotranspiration Input Data for the Central Valley Hydrologic Model (CVHM)"}