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1 西北地区东部旱转涝、涝转旱年Idfa值及其春、夏季降水距平百分率
Tab.1 The Idfa values and precipitation anomaly percentages in spring and summer of flood-to-drought (drought-to-flood) years over the east region of Northwest China
年份 降水距平百分率/% Idfa
春季 夏季
旱转涝年
Idfa >0)
1979 -55 26 0.34
1981 -36 18 0.19
1995 -71 14 0.20
1996 -34 24 0.26
2020 -32 38 0.43
涝转旱年
Idfa <0)
1983 79 -14 -0.20
1991 71 -33 -0.46
1999 19 -20 -0.15
2015 27 -41 -0.34