The correlation of rainfall of the mid-west northwest in summer and water vapor shows the rainfall comes from the westerly vapor transport of the Atlantic Ocean and the Arctic Ocean .

• 我国西北地区中、西部的夏季降水与春、夏季比湿及水汽通量相关的分析,揭示这些地区的水汽仍主要来自于北大西洋、北冰洋的西风输送。