NY Times explains
Sep. 16th, 2021 01:37 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
ny_quanthow climate change seems to have caused a slowdown in the speed of storms, allowing them to spend more time in one place. One 2019 study found that the average speed of storms near the Atlantic coast of North America had slowed by more than 15 percent.
Why? Wind speed is partly a function of the difference in temperature between air masses, as Henry Fountain, a Times climate reporter, explained to me. A larger temperature difference leads to faster winds, as the mixing air tries to reach equilibrium. The warming of the Arctic has reduced the temperature difference between it and the Equator, weakening the winds between them, in North America. That weakness, in turn, has slowed the movement of tropical storms.
В порядке опроса, дорогие друзья и френды, скажите пожалуйста - кажется ли вам это объяснение понятным и удовлетворительным? Если нет, то что именно кажется странным.
Why? Wind speed is partly a function of the difference in temperature between air masses, as Henry Fountain, a Times climate reporter, explained to me. A larger temperature difference leads to faster winds, as the mixing air tries to reach equilibrium. The warming of the Arctic has reduced the temperature difference between it and the Equator, weakening the winds between them, in North America. That weakness, in turn, has slowed the movement of tropical storms.
В порядке опроса, дорогие друзья и френды, скажите пожалуйста - кажется ли вам это объяснение понятным и удовлетворительным? Если нет, то что именно кажется странным.
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no subject
Date: 2021-09-29 09:21 pm (UTC)Далее, цитирую википедию:
The Rossby number is the ratio of inertial to Coriolis forces. A small Rossby number indicates a system is strongly affected by Coriolis forces, and a large Rossby number indicates a system in which inertial forces dominate. For example, in tornadoes, the Rossby number is large, in low-pressure systems [т.е. в циклонах] it is low ... Perhaps the most important impact of the Coriolis effect is in the large-scale dynamics of the oceans and the atmosphere.
https://en.wikipedia.org/wiki/Coriolis_force
no subject
Date: 2021-09-29 10:53 pm (UTC)... и далее примеры влияния силы Кориолиса на формирование феноменов вроде циклон, но не на движение циклонов как таковых. Может, мы шкалы неодинаково определяем? Можно движение циклона как целого называется флюктуацией в global scale dynamics, уровень, где Кориолис, опять, менее важен.
Ну, или нет. У меня, увы, сейчас нету ни сил, ни времени (ни, в результате, особо сильного желания) разбираться в вопросе глубже, а без таких разбирательств не могу достаточно информированно ни соглашаться, ни оппонировать.
no subject
Date: 2021-09-30 02:58 am (UTC)