亚非副热带西风急流入口区位置及动能异常对中国华北盛夏年代际干旱的影响
Influence of the Position and Kinetic Energy Anomalies of the Inlet Region of the Asian-African Subtropical Westerly Jet on the Mid-Summer Interdecadal Drought in North China
（a）和（b）中黑色线为20 m·s-1西风急流位置
亚非副热带西风急流入口区位置及动能异常对中国华北盛夏年代际干旱的影响 |
| 魏建宁,张杰 |
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Influence of the Position and Kinetic Energy Anomalies of the Inlet Region of the Asian-African Subtropical Westerly Jet on the Mid-Summer Interdecadal Drought in North China |
| Jianning WEI,Jie ZHANG |
| 图5 1979 -2015年7月和8月200 hPa V分量EOF第一模态和第三模态的空间分布（a, b）及其时间系数和急流入口区位置指数（c, d） （a）和（b）中黑色线为20 m·s-1西风急流位置 |
| Fig.5 The first and third EOF spatial mode at 200 hPa V component （a, b）, the time coefficient and the location index at the entrance of the jet stream （c, d） in July and August of 1979 -2015.The black line shows the position of 20 m·s-1 westerly jet |
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