محمدرضا مددی

Evaporation is one of the most important variables of the hydrological cycle. Various factors affect the evaporation rate from water surfaces, including the sunlight, wind speed, air temperature and the air moisture. In this study, the effect of salinity on the evaporation rate from the water surface has been investigated experimentally. For this purpose, the amount of evaporated water was measured from the surface of 9 glass cylinders with a capacity of 3 liters with zero (control) salinity, 67, 83, 100, 117, 133, 200, 267 and 333 gr/L. The experiments were performed for one month (from 15 August to 15 September 1400) in hot and dry climate (Shiraz city). The results showed that with increasing the salinity of water, the rate of evaporation decreases, so that with increasing the salinity of water from 67 to 333 gr/L, the rate of evaporation decreased by 77% during a month.