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SUMMARY:Mammatus clouds and sedimentation instabilities - Kirk Distinguish
 ed Visiting Fellow Lecture - Rama Govindarajan (International Centre for T
 heoretical Sciences\, TIFR\, Bangalore)
DTSTART:20220505T150000Z
DTEND:20220505T160000Z
UID:TALK171752@talks.cam.ac.uk
DESCRIPTION:We will talk about two kinds of clouds: mammatus\, and the new
 ly-designated asperitas\, which display breathtaking patterns in the sky. 
 Such patterns are shown to be created by droplet sedimentation below the c
 loud base combined with the thermodynamics of phase change. Sedimentation 
 in the presence of wind shear is shown to be a strong candidate for asperi
 tas cloud formation. Stability analysis and numerical simulations are in q
 ualitative agreement. When droplets or ice particles are close to each oth
 er\, their shape\, and their interactions as they fall\, can create other 
 instabilities and patterns. We will discuss these and a few consequences.\
 n&nbsp\;
LOCATION:Seminar Room 1\, Newton Institute
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