西北地区东部春夏季旱涝转换环流特征及其与大西洋海温的关系

张雯, 马阳, 王素艳, 王岱, 李欣

Circulation characteristics of drought-flood transition from spring to summer over the east region of Northwest China and its relationship with Atlantic sea surface temperature

ZHANG Wen, MA Yang, WANG Suyan, WANG Dai, LI Xin

图5 1979—2020年 $I_{S S T_s p r}$ 、 $I_{S S T_s u m}$ 及I_dfa逐年变化

Fig.5 The yearly variation of $I_{S S T_s p r}$ ， $I_{S S T_s u m}$ and I_dfa from 1979 to 2020