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Understanding Atmospheric Catastrophes

Winston C. Chao

Laboratory for Atmospheres, Goddard Space Flight Center, Greenbelt, Maryland, USA

[email protected]

The atmosphere, like other parts of nature, is full of phenomena that involve rapid transitions from one (quasi-)equilibrium state to another, i.e. catastrophes. These (quasi-)equilibria are the multiple solutions of the same dynamical system. Unlocking the mystery behind a catastrophe reveals not only the physical mechanism responsible for the transition, but also how the (quasi-) equilibria before and after the transition are maintained. Each catastrophe is different, but they do have some common traits. Understanding these common traits is the first step in studying these catastrophes. In this article, three examples are reviewed to show how atmospheric catastrophes can be studied.

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