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A new method to determine regional evapotranspiration
Author(s) -
Magaritz Mordeckai,
Kaufman Aaron,
Paul Michael,
Boaretto Elisabetta,
Hollos George
Publication year - 1990
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/wr026i008p01759
Subject(s) - evapotranspiration , precipitation , environmental science , water cycle , hydrology (agriculture) , chloride , water body , structural basin , geology , environmental engineering , meteorology , geography , chemistry , geomorphology , ecology , geotechnical engineering , organic chemistry , biology
A method is described whereby the chloride concentration and the ratio of 36 Cl to total chloride of a given water body are compared with those of precipitation to determine the fraction of the original precipitation which was lost by evapotranspiration before it reached that water body. This method was applied to 11 water sources in the upper Jordan River basin, and the evapotranspirative loss was generally found to be in the range 40–90%. This method, which is much simpler than the other methods for determining regional evapotranspiration, will enable us to monitor the changes in the hydrological cycle which are expected to result from the greenhouse effect.