Winter and spring to the upper troposphere, almost no water vapor.

冬季和春季到对流层上层基本无水汽。

youdao

Besides, the planetary monsoon in the upper troposphere is also realistically reproduced.

此外，模式也真实再现了对流层高层的行星季风。

youdao

The dynamic response to the heating imbalance is such as to converge heat into the upper troposphere of the desert regions.

对这一加热不平衡的动力学响应结果导致热在这沙漠地带的对流层上部辐合。

youdao

While the aircraft has flown before, this was the first flight for it after being loaded up with eleven different scientific instruments, which will be used to examine trace gases, aerosols, and dynamics of the upper troposphere and lower stratosphere.

ENGADGET: NASA's unmanned Global Hawk completes key test flight