Mammatus clouds and sedimentation instabilities - Kirk Distinguished Visiting Fellow Lecture

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• Rama Govindarajan (International Centre for Theoretical Sciences, TIFR, Bangalore)
• Thursday 05 May 2022, 16:00-17:00
• Seminar Room 1, Newton Institute.

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TUR - Mathematical aspects of turbulence: where do we stand?

We will talk about two kinds of clouds: mammatus, and the newly-designated asperitas, which display breathtaking patterns in the sky. Such patterns are shown to be created by droplet sedimentation below the cloud base combined with the thermodynamics of phase change. Sedimentation in the presence of wind shear is shown to be a strong candidate for asperitas cloud formation. Stability analysis and numerical simulations are in qualitative agreement. When droplets or ice particles are close to each other, their shape, and their interactions as they fall, can create other instabilities and patterns. We will discuss these and a few consequences.  

This talk is part of the Isaac Newton Institute Seminar Series series.

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