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混乱与热风力机制

在气象学中,我们知道寒冷的空气质量下沉而暖气团上升由于密度差,导致更高的压力在寒冷的空气质量。这导致从冷到暖地区横向压力梯度(即风流动从冷到温暖的地方)。

然而,当考虑到热风的情况,基于色方程,在任何相同的级别,在寒冷地区的压力低于在温暖的地方,导致横向压力梯度从温暖的寒冷地区。这是上述相反的情况,这是令人困惑。我们如何解释两种情况之间的差异消除矛盾吗?

回答

>色方程的基础上,在任何水平,压力>在寒冷地区低于在温暖的地方,导致>横向压力梯度从温暖的寒冷地区。不一定。在寒冷地区,等压线更“压缩”,而在温暖地区,等压线更“展开”。在大多数热风的例子,表面的压力实际上是相同的在寒冷的地区,在温暖的地区。看看[这][1]的形象。横向压力梯度只是在高海拔地区。事实上,风热上对流层和削弱接近水面。这与季风的概念吗?没有因为季风是近地面的风。让我们用陆地和海洋的微风作为一个例子,因为他们基本上只是小规模的季风。 Take a look at [this][2] image regarding land and sea breezes. Air in the warm region rises which causes the isobars to "spread apart". A horizontal pressure gradient in the upper troposphere occurs so wind will flow from the warm area to the cooler area; this is thermal wind. Air above the cooler area sinks because it is more dense. This gives room for the thermal wind to also sink above the cooler area. The surface pressure in the cooler area is now higher than the warmer area since the sinking air is building up. A horizontal pressure gradient forms which causes wind on the surface to flow from the cooler area to the warmer area. I hope you understand since explaining this was a bit tricky without a lot of visualization. Also, check out wind flow maps of a monsoon. On the surface, wind flows from the colder area to the hotter area. But if you check the wind flow at higher altitudes, the wind actually reverses. Edit: Here's an analogy I just thought of. Think of the air as individual molecules. Think of these molecules as balls in an aquarium. These balls would always want to be a set distance away from other balls. If a ball is too near to another ball, they will push each other; if a ball is too far from another ball, they will try to go closer. One end of the aquarium is hot while the other is cold. The balls in the hot part rise and build up at the upper portion of the aquarium. The balls in the cold part sink and build up at the bottom part of the aquarium. The balls build up but since they don't want to be together, they flow towards the spaces with no balls. The hot balls will glide on the ceiling of the aquarium towards the colder part where they cool down and sink. The cold balls will glide on the floor of the aquarium towards the hot part where they heat up and rise. The cycle then just keeps repeating. The thermal wind phenomenon occurs on the ceiling of the aquarium, the monsoon/land-sea breeze phenomenon occurs on the floor of the aquarium. [1]: http://www-das.uwyo.edu/~geerts/cwx/notes/chap12/Image82.gif [2]: https://www.weather.gov/source/zhu/ZHU_Training_Page/winds/Wx_Terms/sea_breeze.png

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\ begingroup美元谢谢你,陆地/海洋微风等压线图附所需要解释热风和季风和消除任何矛盾! \ endgroup美元
- - - - - -electroniclearner
在4月12日15:46
\ begingroup美元 @gansub同情穷人的选择的话。整个季风环流显然不仅仅是一个表面风随着循环风流在对流层上部和下部。我是属于electroniclearner的声明在其他回答说“寒冷的西伯利亚气流在热带地区ITCZ北方冬季”。在这种情况下,风他指出低级季风环流的一部分。 \ endgroup美元
- - - - - -mEXsACHINE
4月12日在十六14

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