厄尔尼诺事件年际变化与我国华北夏季干旱的关系
郝立生, 何丽烨, 马宁, 郝钰茜

Relationship between interannual variability of El Niño events and summer droughts in North China
HAO Lisheng, HE Liye, MA Ning, HAO Yuqian
图4 1961—2022年华北夏季降水偏少年(a)、偏多年(b)前后24个月Niño3指数变化
Fig.4 The changes of Niño3 index in 24 months before and after the year with less (a) and more (b) precipitation in summer in North China from 1961 to 2022