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ARS Home » Plains Area » Bushland, Texas » Conservation and Production Research Laboratory » Soil and Water Management Research » Research » Publications at this Location » Publication #258509

Title: Evaluation of SEBS for Deriving Land Surface Energy Fluxes with MODIS data in a Semiarid Region

Author
item Jayanthi, Harikishan - University Of Texas
item Gowda, Prasanna
item Scanlon, Bridget - University Of Texas
item Howell, Terry
item Paul, George - Kansas State University

Submitted to: American Geophysical Union
Publication Type: Abstract Only
Publication Acceptance Date: 12/10/2010
Publication Date: 12/17/2010
Citation: Jayanthi, H., Gowda, P., Scanlon, B., Howell, T.A., Paul, G. 2010. Evaluation of SEBS for Deriving Land Surface Energy Fluxes with MODIS data in a Semiarid Region [abstract]. American Geophysical Union Meeting, December 13-17, 2010, San Francisco, California. Paper No. H31B-0995.

Interpretive Summary:

Technical Abstract: Texas High Plains is one of the largest agricultural regions in the United States where 90% of the water derived from the Ogallala Aquifer is used for irrigation. Accurate seasonal evapotranspiration (ET) estimates at a regional scale would be useful for groundwater management purposes. Remote sensing based ET models are suitable for this purpose. The main objective of this study was to evaluate the Surface Energy Balance System (SEBS) for its ability to estimate ET using Moderate Resolution Imaging Spectroradiometer (MODIS) data. For this purpose, the SEBS was implemented with MODIS data acquired during the 2007 crop growing season. The accuracy of the 250-m MODIS ET maps was assessed using ET data derived from Landsat Thematic Mapper (TM) images that were compared and validated against lysimetric data as part of another study and upscaled to 250 m for comparison. This presentation will discuss the statistical results and evaluate the strengths and weaknesses of the SEBS model.