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5 1990—2019年不同等级气象(a、c)、水文(b、d)干旱发生频率季节(a、b)及月际(c、d)分布
Fig.5 Seasonal (a,b) and monthly (c,d) distribution of occurrence frequency of meteorological (a,c) and hydrological (b,d) drought with different grades from 1990 to 2019