海温和MJO对2023年西南春旱的协同影响

陆晓娟, 王芝兰, 张金玉, 王昀, 王丽娟, 胡蝶, 沙莎, 王素萍, 李忆平

The synergistic effect of sea temperature and MJO on spring drought in southwestern China in 2023

LU Xiaojuan, WANG Zhilan, ZHANG Jinyu, WANG Yun, WANG Lijuan, HU Die, SHA Sha, WANG Suping, LI Yiping

图7 2023年4月200 hPa位势高度异常（填色区，单位：gpm）和T-N波作用通量（箭矢，单位：m2·s-2）（a），OLR异常（填色区，单位：W·m-2）和850 hPa流函数异常（等值线，零线已省略，虚线表示负值，单位：106 m2·s-1）（b），整层水汽通量异常（箭矢，单位：g·m-1·s-1）及其散度（填色，单位：g·m-2·s-1）（c），OLR异常（填色区，单位：W·m-2）、200 hPa位势函数异常（等值线，零线已省略，虚线表示负值，单位：106 m2·s-1）和散度风异常（箭矢，单位：m·s-1）（d）

Fig.7 The spatial distribution of geopotential height anomalies (the color shaded, Unit: gpm) and T-N wave activity flux (arrow vectors, Unit: m2·s-2) at 200 hPa (a), OLR anomalies (the color shaded, Unit: W·m-2) and stream function anomalies at 850 hPa (isolines, zero line not shown, the dotted line represents a negative value, Unit: 106 m2·s-1) (b), integrated water vapor flux (arrow vectors, Unit: g·m-1·s-1) and its divergence (the color shaded, Unit: g·m-2·s-1) (c), OLR anomalies (the color shaded, Unit: W·m-2), potential function anomalies (isolines, zero line not shown, the dotted line represents a negative value, Unit: 106 m2·s-1) and divergent wind anomalies (arrow vectors, Unit: m·s-1) at 200 hPa (d) in April of 2023