atmosphere lower

Stratospheric air generally rises above tropical latitudes, spreads toward the poles, and then sinks back toward the lower atmosphere at high latitudes.

平流层的空气一般停留在对流层上空，向两极移动，然后再下沉到高纬度带的低层大气。

They typically occur in the lower atmosphere ahead of a storm front.

它们通常于暴风雨前在低层大气中露面。

This means that in a world where greenhouse warming is wetting the atmosphere, the lower parts of the atmosphere should warm at a greater rate than the surface, most notably in the tropics.

这就意味着，在一个温室效应增加空气湿度的世界里，底层大气的暖化率要远远高于地表，这个现象在热带地区尤为明显。