水汽输送通量和水汽输送轨迹的变化主要和东亚夏季风的逐渐减弱有关。
The variations of the water vapor transportation paths is related with the weaken of summer monsoon over East Asia.
夏季垂直积分的水汽输送通量强辐合区大多位于行星尺度水汽输送大值带中，和降水大值区之间有很好的对应关系。
The strong convergence areas, which are coincide to the big rain belt, mostly lie in the planetary-scale water vapor transport.
另外，华北地区在1960—1964年垂直积分的水汽输送通量存在最大值，1965年以后水汽输送通量值开始变小，1977年后水汽输送通量值较小且保持稳定。
In addition, there was maximum for the vertical integral of vapor fluxes from 1960 to 1964, which began to decrease from 1965. The vapor flux was less and stable since 1977.
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