The rainfall, evaporation and remaining water on the ground were also calculated, and its water budget and water excess (deficit) were analyzed.

同时计算了江淮地区地面的降水量、蒸发量和地面余水量，分析了地面的水分收支和水分盈亏。

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The ratio of net radiation over rainfall for a given period of time is a measure of excess energy relative to available water and is therefore a measure of drought hazard.

根据一定时间间隔的净辐射与降雨量的比可以用来衡量相对于可利用水分的剩余能量，因此该比值也是干旱灾害的度量。

youdao

Maybe higher tropical sea surface temperature is an indication of excess of rainfall over the middle reaches of the Yangtze River.

前期热带海洋海表温度偏高，可能预示长江中游夏季降水偏多，反之亦然。

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