Open AccessComparison of evapotranspiration models
Author(s) -
R. K. Mall,
B. B. P. Gupta
Publication year - 2002
Publication title -
mausam
Language(s) - English
Resource type - Journals
ISSN - 0252-9416
DOI - 10.54302/mausam.v53i2.1627
Subject(s) - evapotranspiration , lysimeter , mean squared error , statistic , statistics , environmental science , mathematics , uttar pradesh , hydrology (agriculture) , soil science , soil water , geology , ecology , geotechnical engineering , socioeconomics , sociology , biology
Actual evapotranspiration of wheat crop during different year from 1978-79 to 1992-93 was measured daily in Varanasi, Uttar Pradesh using lysimeter. In this study three evapotranspiration computing models namely Doorenbos and Pruitt, Thornthwaite and Soil Plant Atmosphere Water (SPAW) have been used. Comparisons of these three methods show that the SPAW model is better than the other two methods for evapotraspiration estimation. In the present study the MBE (Mean-Bias-Error), RMSE (Root Mean Square Error) and t-statistic have also been obtained for better evaluations of a model performance.