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Estimating actual evapotranspiration without land use classification

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dc.contributor.authorThoreson, Bryan, author
dc.contributor.authorZwart, Sander, author
dc.contributor.authorBastiaanssen, Wim, author
dc.contributor.authorDavids, Grant, author
dc.contributor.authorU.S. Committee on Irrigation and Drainage, publisher
dc.date.accessioned2020-03-31T11:54:32Z
dc.date.available2020-03-31T11:54:32Z
dc.date.issued2004-10
dc.descriptionPresented during the USCID water management conference held on October 13-16, 2004 in Salt Lake City, Utah. The theme of the conference was "Water rights and related water supply issues."
dc.description.abstractWater resource planning requires knowledge of consumptive water use by crops and natural vegetation. Remote sensing offers the promise of obtaining consumptive use and other water resource data over large areas at regular intervals. SEBAL (Surface Energy Balance Algorithm for Land) uses data gathered by satellite-based sensors to compute the energy balance at the earth's surface. Evapotranspiration (ET) is predicted as a residual of the energy balance, without needing to know crop or vegetation type, or other ground-based information, except routine weather data. Utilizing SEBAL, annual actual ET in 2002 for the state of California has been computed from MODerate-resolution Imaging Spectroradiometer (MODIS) satellite images for each square kilometer. Annual ET can be summarized spatially using any spatial characteristic for which a GIS overlay is available or can be developed. Annual ET was summarized spatially by land use, county and watersheds. Validation of the SEBAL process is discussed in general and for this specific application. Annual actual ET from a MODIS pixel comprised of largely alfalfa fields was found to differ by 0.9 percent from alfalfa annual actual ET measured by a lysimeter maintained by the United States Department of Agriculture, Agriculture Research Service near Fresno, California (Ayars and Soppe, 2003).
dc.description.sponsorshipProceedings sponsored by the U.S. Department of the Interior, Central Utah Project Completion Act Office and the U.S. Committee on Irrigation and Drainage.
dc.format.mediumborn digital
dc.format.mediumCD-ROMs
dc.format.mediumproceedings (reports)
dc.identifier.urihttps://hdl.handle.net/10217/201635
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartofAg Water Conservation Policy
dc.relation.ispartofWater rights and related water supply issues, October 13-16, 2004, Salt Lake City, Utah
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.sourceContained in: Water rights and related water supply issues, Salt Lake City, Utah, October 13-16, 2004, http://hdl.handle.net/10217/46435
dc.titleEstimating actual evapotranspiration without land use classification
dc.typeText

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