涡位置 meaning in English

vortex position

4 , the summer rainfall anomaly in northeast china bears close correlation with the atmospheric circulation backgroud . while cold air in middle and high levels of troposphere is active in wet year with the positive anomalies over high - latitude and polar area , the active longwave ridge , the anomalous long - wave ridge in northeast china and inner - mogolia as well as the northward and eastward of the polar vortex , the contrary is in the dry year in northeast china
4东北地区夏季降水异常与大气环流背景有密切的关系，东北地区夏季多雨年在对流层中、高层冷空气比较活跃，高纬和极区主要由位势高度的正距平所控制，贝加尔湖以北的地区长波脊较为活跃，在东北地区和蒙古地区有异常的长波槽发展，极涡位置偏北、偏东；而在东北地区夏季少雨年则容易出现与上述相反的异常环流形式。