Potential evaporation in the summer in Lower Saxony 1971-2000

The map shows the mean potential evaporation (in mm) in the hydrological summer half-year (May-Oct.) for the 30-year period 1971-2000. The FAO reference evaporation has been used to calculate potential evaporation.该地图展示了1971-2000年这30年时段内，水文夏半年（5月至10月）的平均潜在蒸散发（potential evaporation，单位：毫米）。本次潜在蒸散发的计算采用了联合国粮食及农业组织（Food and Agriculture Organization，FAO）参考蒸散发方法。