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Landsat surface temperatures and radio soundings to obtain regional surface fluxes
Author(s) -
Sugita Michiaki,
Brutsaert Wilfried
Publication year - 1992
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/92wr00468
Subject(s) - radiosonde , sensible heat , environmental science , planetary boundary layer , latent heat , fetch , satellite , thematic mapper , wind profiler , boundary layer , atmospheric sciences , heat flux , meteorology , surface layer , remote sensing , satellite imagery , geology , turbulence , heat transfer , layer (electronics) , radar , geography , aerospace engineering , oceanography , chemistry , engineering , thermodynamics , physics , organic chemistry , computer science , telecommunications
Thermal infrared radiances recorded by the thematic mapper of the Landsat 5 satellite, in combination with wind velocity and temperature profiles recorded by radiosondes, were used to derive surface fluxes of sensible heat during the First International Satellite Land Surface Climatology Project (ISLSCP) Field Experiment (FIFE). FIFE was conducted in 1987 and 1989 in a strongly dissected tallgrass prairie area of the Flint Hills in northeastern Kansas. The scale of the surface temperature measurements was made compatible with the effective fetch of the boundary layer profile measurements by aggregation. The methods of calculation were based on known Monin‐Obukhov flux‐profile relationships and on bulk similarity formulations for the atmospheric boundary layer. The surface temperatures were used both with and without atmospheric correction. The latent heat fluxes (evaporation) were derived from those of sensible heat by means of the energy budget. The calculated fluxes were generally in good agreement with the means of the fluxes measured in the field by all (22 in 1987 and 14 in 1989) ground stations in the 15×15 km experimental area.