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

表3 西北地区东部I_dfa异常年春、夏季大西洋SST异常指数

Tab.3 The SST anomalies indices in the Atlantic Ocean in spring and summer in I_dfa anomaly years over the eastern region of Northwest China

	年份	$I_{S S T_s p r}$	$I_{S S T_s u m}$
旱转涝年（I_dfa >0）	1979	-0.33	0.58
	1981	0.48	0.22
	1995	0.86	-0.05
	1996	0.55	0.41
	2020	0.72	0.60
涝转旱年（I_dfa <0）	1983	-0.66	0.68
	1991	-1.29	-2.09
	1999	0.44	0.03
	2015	-1.14	-0.70