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Mapping surface energy balance components by combining landsat thematic mapper and ground-based meteorological data

M. S. Moran·R. D. Jackson·L.H. Raymond·L. W. Gay·P.N. Slater
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Abstract

Surface energy balance components were evaluated by combining satellite-based spectral data with on-site measurements of solar irradiance, air temperature, wind speed, and vapor pressure. Maps of latent heat flux density (λE) and net radiant flux density (R n ) were produced using Landsat Thematic Mapper (TM) data for three dates: 23 July 1985, 5 April 1986, and 24 June 1986. On each date, a Bowen-ratio apparatus, located in a vegetated field, was used to measure λE and R n at a point within the field. Estimates of λE and R n were also obtained using radiometers aboard an aircraft flown at 150 m above ground level. The TM-based estimates differed from the Bowen-ratio and aircraft-based estimates by less than 12 % over mature fields of cotton, wheat, and alfalfa, where λE and R n ranged from 400 to 700 Wm −2 .

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M. S. Moran, R. D. Jackson, L.H. Raymond, L. W. Gay, P.N. Slater. 1989. Mapping surface energy balance components by combining landsat thematic mapper and ground-based meteorological data. https://doi.org/10.1016/0034-4257(89)90049-7

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