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SUMMARY:Quasi-Geostrophic Limit for a Moist Atmosphere with Clouds - Samue
 l Stechmann (University of Wisconsin-Madison)
DTSTART:20220517T101500Z
DTEND:20220517T111500Z
UID:TALK173672@talks.cam.ac.uk
DESCRIPTION:Clouds and rainfall are among the most challenging aspects of 
 predicting weather and climate. Moreover\, many fundamental aspects of clo
 uds and rainfall\, including both physical and mathematical aspects\, rema
 in to be understood. Here\, we aim to understand a singular limit\, the qu
 asi-geostrophic (QG) approximation\, which is a fundamental approximation 
 of atmospheric science\, but which is not well understood in the presence 
 of clouds. I will describe a new system of partial differential equations 
 (PDEs) that arises in a new\, cloudy version of the QG approximation. Our 
 aim is to gain a well-rounded understanding of this new limit and new PDEs
 \, including asymptotics\, rigorous analysis\, numerical methods\, and phy
 sical insight. I will describe the main challenges that are introduced by 
 clouds and also some progress and open questions in elucidating the fundam
 ental properties of a cloudy atmosphere.
LOCATION:Seminar Room 1\, Newton Institute
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