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Wednesday 13 March 2024, 13:15-13:40
A new convection scheme for exoplanet atmospheres
- đ¤ Speaker: Edouard Barrier (University of Cambridge)
- đ Date & Time: Wednesday 13 March 2024, 13:15 - 13:40
- đ Venue: The Hoyle Lecture Theatre + Zoom
Abstract
Convection is an essential process for transporting heat and moisture in planetary atmospheres. The standard Earth picture of moist convection rising from the surface is only one of a number of modes of convection. Notably, convection in atmospheres with a high condensible mass fraction (non-dilute atmospheres), or with a lighter background gas than the condensible species (e.g. water convection in a hydrogen dominated atmosphere) – acts very differently and can be much weaker or even shut down entirely in the latter case. Here I present a new mass-flux scheme which can capture these variations and simulate convection in a wide range of parameter space for use in 3D climate models. A validation using the case of Trappist-1 e is presented.
Series This talk is part of the Institute of Astronomy Seminars series.
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