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Title:   Author  item
                                            NORMAN, JOHN - UNIVERSITY OF WIitem
                                            Anderson, Marthaitem
                                            Kustas, William

                                                         - *Bill*
  Submitted to: Workshop Proceedings
                                    Publication Type: Proceedings
                                    Publication Acceptance Date: 8/5/2006
                                    Publication  Date: 8/5/2006
                                    Citation: Norman, J.M., Anderson, M.C., Kustas, W.P. 2006. Are single-source, remote-sensing surface flux models too simple. In: Proceeding of Earth Observation for Vegetation Monitoring and Water Management, American Institute of Physics, November 10-11, 2005, Naples, Italy. p. 170-177.Interpretive Summary:
                                Technical Abstract: Both one-source and two-source parameterizations of surface sensible heat flux exchange using radiometric surface temperature have been proposed.  Although one-source algorithms may provide reliable heat fluxes, they often require field calibration and hence are unable to accommodate the diverse range of surface conditions often encountered over a landscape. Two-source models require fewer assumptions and no a priori calibration, and therefore have a wider range of applicability without requiring any additional input data.  A one-source scheme (SEBAL) that performs an “internal calibration” using hydrologic extremes (hot/dry and wet/cool pixels) encountered within a remote sensing scene has been proposed as a way to eliminate a priori calibration and the need for ancillary data.  In this paper, some of the key assumptions in SEBAL are evaluated using a two-source model, field data, and simulations from a complex soil-vegetation-atmosphere transfer (SVAT) model, Cupid.


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