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11 1961—2022年华北夏季对应EOF3的200 hPa(a)、500 hPa(b)气候平均位势高度(等值线)及高度距平(填色)(单位:dagpm)和200 hPa(a)、850 hPa(c)水平风速异常(箭矢,单位:m·s-1)空间分布
(异常场是对EOF3时间系数PC3回归重构的结果)
Fig.11 Spatial distributions of climatological mean geopotential height (isolines) and height anomaly (the color shaded) at 200 hPa (a) and 500 hPa (b) (Unit: dagpm) and horizontal wind speed anomalies at 200 hPa (a) and 850 hPa (c) (arrow vectors, Unit: m·s-1) corresponding to EOF3 in summers during 1961-2022 in North China
(The anomalous are the result of regression reconstruction upon the time coefficient PC3 of the EOF3)