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Structure and dynamics of concentrated mesoscale vortices in planetary atmospheres
Physics-Uspekhi ( IF 2.7 ) Pub Date : 2020-09-24 , DOI: 10.3367/ufne.2019.07.038611
O G Onishchenko 1, 2 , O A Pokhotelov 1 , N M Astaf’eva 1, 2 , W Horton 3 , V N Fedun 4
Affiliation  

Concentrated vortices are spatially localized structures with nonzero vorticity surrounded by a potential flow. These structures include a broad class of mesoscale vortices, such as dust devils, water vortices, and fire vortices, as well as larger-scale and more intense tornados. From a rather broad class of concentrated mesoscale vortices, dust devils are selected as the simplest and most easily observable structures owing to dust particles that play the role of tracers. The aim of this review is to present the main results of studies of dust devils in the atmospheres of Earth and Mars. In the framework of ideal fluid dynamics, a recently proposed model is discussed that allows describing vortex structures that are fully localized in space. The results of numerical modeling of vortex dynamics and an analytic model of vortex generation in a convectively unstable atmosphere are briefly discussed.

中文翻译:

行星大气中集中中尺度涡旋的结构和动力学

集中涡旋是空间局部结构,其涡流被非零涡流包围。这些结构包括大类中尺度涡旋,例如尘土飞旋,水涡旋和火涡旋,以及更大范围和更强烈的龙卷风。由于尘埃颗粒起着示踪剂的作用,因此从相当广泛的一类集中的中尺度涡旋中,尘埃被选为最简单,最容易观察的结构。这篇综述的目的是介绍研究地球和火星大气中的尘埃魔鬼的主要结果。在理想流体动力学的框架内,讨论了最近提出的模型,该模型允许描述完全位于空间中的涡旋结构。
更新日期:2020-09-25
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