基于干旱和水位特征构建水库人工增雨需求指数
姜舒婕, 程莹, 方楠, 周毓荃, 单中华, 张磊

Construction of artificial precipitation demand level index of the reservoir based on drought and water level characteristics
JIANG Shujie, CHENG Ying, FANG Nan, ZHOU Yuquan, SHAN Zhonghua, ZHANG Lei
图2 1990—2019年不同等级WLI频率年际分布和标准化年平均水位
Fig.2 The inter-annual distribution of frequency of WLI with different grades and normalized annual mean water level from 1990 to 2019