Japan Geoscience Union Meeting 2023

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[E] Online Poster

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM11] Exoplanet

Thu. May 25, 2023 1:45 PM - 3:15 PM Online Poster Zoom Room (2) (Online Poster)

convener:Takanori Kodama(The university of Tokyo), Shota Notsu(Star and Planet Formation Laboratory, RIKEN Cluster for Pioneering Research), Yui Kawashima(RIKEN), Mayuko Mori(The University of Tokyo)

On-site poster schedule(2023/5/24 17:15-18:45)

1:45 PM - 3:15 PM

[PEM11-P05] Climate for habitable exoplanets

*Takanori Kodama1 (1.The university of Tokyo)

Keywords:Habitable planets, Climate, GCM

A large number of exoplanets are detected and some of them are expected to be rocky planets with Earth-like bulk composition within the habitable zone. Recently, the climate for exoplanets in the habitable zone has been estimated with a three-dimensional climate model(3D GCM). For exo-terrestrial planets within the habitable zone around M stars, such planets are thought to be in a tidally-locked state where they have permanent day-side and night-side. Previous studies with 3D GCM found a larger insolation of the runaway greenhouse threshold than that estimated using a 1D radiative-convective equilibrium model because the effect of clouds is important to maintain surface liquid water, in other words, a habitable environment. I will summarize the effect of clouds on the habitable climate on exo-terrestrial planets and discuss the inner edge of the habitable zone around M stars.