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。
2
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.