Net radiation over the Aswan High Dam Lake

Abstract

Net radiation is an essential parameter for estimating evaporation from large water surfaces by energy balance method. Net radiation has been measured for the first time over the Aswan High Dam Lake on the Nile River for 132 days including warm and cold seasons. A high multiple linear correlation coefficient of 0.98 was obtained between the measured net radiation on the one hand and the global solar radiation measured at Aswan and the difference between water and air temperatures measured over the Lake on the other hand.