Using the modified MASS model and terrain data of Liaoning, the effect of terrain on diurnal variation of the wind field in the ground layer is simulated.

利用修改的Mass模式和辽宁地区的地形资料，模拟了地形加热作用对辽宁地区近地层风场日变化的影响。

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And decreases in diurnal temperature range and wind speed were found to be the main influencing factors leading to the decrease of pan evaporation.

完全相关系数法分析表明，气温日较差和平均风速的减小与蒸发皿蒸发量的减少具有最显著的相关性，是蒸发皿蒸发量减少的影响因子。

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