Premium
Reference crop evapotranspiration determined with a modified Makkink equation
Author(s) -
de Bruin H. A. R.,
Lablans W. N.
Publication year - 1998
Publication title -
hydrological processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.222
H-Index - 161
eISSN - 1099-1085
pISSN - 0885-6087
DOI - 10.1002/(sici)1099-1085(19980615)12:7<1053::aid-hyp639>3.0.co;2-e
Subject(s) - evapotranspiration , geostationary orbit , environmental science , crop , meteorology , atmospheric sciences , satellite , geography , physics , forestry , ecology , astronomy , biology
A modified version of the Makkink equation is shown to be a suitable alternative for Penman's formula for the determination of the crop reference evapotranspiration E ref that is used in the so‐called crop factor approach . Makkink's equation requires solar radiation and temperature data only. Since 1987 the Royal Netherlands Meteorological Institute has calculated E ref with the modified Makkink's formula on a routine base. Using solar radiation derived from geostationary satellites, remotely sensed estimates of crop reference evapotranspiration can be obtained. © 1998 John Wiley & Sons, Ltd.