一种新的水面蒸发计算模型的研究

依据水面蒸发过程的物理机制，选用饱和水汽压差、风速、相对湿度、水汽温差4个因子，建立一个以各因子单函数连乘积的形式为基本结构的水面蒸发计算模型．并利用不同气候区多站水面蒸发实验资料，确定模型参数．经全国各地33个蒸发实验站资料检验，此模型的拟合误差较小，移用误差也较小．

STUDY ON A NEW CALCULATION MODEL OF THE EVAPORATION FROM WATER SURFACE

According to the physical mechanism of the evaportion course from water surface,the calculation model of water surface evaporation,whose basic structure is the product of single factor function of four factors such as temperature difference of vapor,wind speed,saturation vapor pressure difference and relative humidity,is established.The model parameters are determined by the water surface evaporation data of many evaporation stations in different climate area.Through using the data of 33 evaporation stations of our country to examine the model,its error of fit and error of area are small.