Landsat-based METRIC/SEBAL Energy Balances in Western Water Resources Management
Abstract
Since about 2000, there have been an increasing number of METRIC/SEBAL applications in the western U.S. to spatially quantify actual ET for focused land areas. SEBAL, the Surface Energy Balance Algorithm for Land, by Bastiaanssen and METRIC, Mapping Evapotranspiration at High Resolution using Internalized Calibration, are a suite of pragmatic energy balance solutions that rely heavily on high quality satellite imagery. METRIC additionally uses ground-based weather data and Penman-Monteith estimates of ET from full-cover, well-watered vegetation to assist in calibrating the energy balance surface and to extrapolate to 24hrs and beyond. Results indicate why applications with high resolution Landsat or ASTER will remain extremely relevant in applications to irrigated systems where knowlege of ET consumption by individual fields and farms is critical. Comparisons with some MODIS-derived ET for similar areas and periods are made.
- Publication:
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AGU Spring Meeting Abstracts
- Pub Date:
- May 2005
- Bibcode:
- 2005AGUSM.H31A..04A
- Keywords:
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- 1818 Evapotranspiration;
- 1833 Hydroclimatology;
- 1836 Hydrologic budget (1655);
- 1894 Instruments and techniques