Nathan Mayne
School Physics, Univ. Exeter (Exeter, Royaume-Uni)
Webinaire, Institut d'Astrophysique de Paris
|
| « Exoplanetary atmospheres in 3D: implications from radiation-chemistry-hydrodynamics simulations » |
|
Nathan Mayne |
| In this presentation I will detail some of our efforts to apply 3D climate models to the study of exoplanets. Firstly, I will give a brief overview of the observations and the key questions they pose, before detailing the approach we have adopted at the Exeter Exoplanet Theory Group. Our studies are based on the UK Met Office 3D model, termed the Unified Model, and I will briefly describe the development environment before presenting some of the physical applications. Starting with gas giant planets, and particularly hot Jupiters, I will show how the atmospheric flows act to move the large scale structure, chemical state and observations away from that predicted through equilibrium and/or 1D considerations. I will then discuss applications to terrestrial exoplanets, and demonstrate the importance of convection, and how it is treated, in setting the overall climate of tidally-locked planets. |
|
vendredi 23 octobre 2020 - 11:00 Webinaire, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |