基于ERA5降水数据的精细化干旱指数在黄河中上游地区的适用性评估

尹喆, 颜鹏程, 左冬冬, 李淑萍

Assessment of applicability of a refined drought index based on ERA5 precipitation data for the middle and upper reaches of the Yellow River

YIN Zhe, YAN Pengcheng, ZUO Dongdong, LI Shuping

表1 标准化降水指数干旱等级划分

Tab.1 The classification of drought grades based on SPI

SPI数值范围 干旱等级 SPI≥2.0 极端湿润 1.5≤SPI<2.0 重度湿润 1.0≤SPI<1.5 中度湿润 0.5<SPI<1.0 轻度湿润 -0.5≤SPI≤0.5 正常 -1.0≤SPI<-0.5 轻度干旱 -1.5≤SPI<-1.0 中度干旱 -2.0≤SPI<-1.5 重度干旱 SPI≤-2.0 极端干旱