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A methodology for estimation of surface evapotranspiration over large areas using remote sensing observations
Author(s) -
Jiang Le,
Islam Shafiqul
Publication year - 1999
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1999gl006049
Subject(s) - remote sensing , evapotranspiration , environmental science , surface (topology) , evaporation , estimation , potential evaporation , radiometry , meteorology , geology , geography , mathematics , ecology , geometry , management , economics , biology
We propose a simple scheme to estimate surface evaporation over large heterogeneous areas using remote sensing observations. Our approach is based on a relationship between easily measured surface parameters (e.g. radiometric surface temperature) and a surrogate for effective surface resistance. Preliminary results, using remotely sensed data sets from AVHRR NOAA‐14 over the Southern Great Plains, show good agreement. The proposed approach appears to be more reliable and easily applicable for operational estimation of evaporation over large areas.