Comparing Eddy Covariance and Soil Water Balance Methods for Evapo-transpiration Measurement in Palmyra Oasis in Syria PDF

Keywords

Evapotranspiration, Eddy covariance, soil water balance, Palmyra Oasis

Abstract

In this study the eddy covariance method results for daily evapotranspiration ET(eddy) in the Palmyra Oasis were compared from the water balance method ET(bal). The eddy covariance measurements were made with a 3D sonic anemometer and Krypton hygrometer. Evapotranspiration estimated by the water balance method was determined using a TDR for soil moisture measurement and a tensiometer for matric potential measurement. A total of 9 pairs of ET(eddy) and ET(bal) daily values were compared. Good agreements were found between the two tested methods with a RMSE of 15.