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4 1990—2019年不同等级气象干旱发生频率年际分布和标准化年降水（a），不同等级水文干旱发生频率年际分布和标准化年入流（b）

Fig.4 The inter-annual distribution of occurrence frequency of meteorological drought with different grades and normalized annual precipitation (a), inter-annual distribution of occurrence frequency of hydrological drought with different grades and normalized annual inflow (b) from 1990 to 2019