Jan. 27, 2022,
noon - 12:50 p.m.
Dept Astronomy & Astrophysics, UCSC &
Interpreting upcoming observations of highly irradiated terrestrial exoplanets may be contingent on understanding Venus's atmospheric evolution. Here, I present a coupled atmosphere-interior evolution model for hot terrestrial planets to constrain Venus's past climate and investigate the fate of oxygen leftover from hydrogen escape. Initial results suggest both habitable and never-habitable histories can be broadly reconciled with geochemical constraints and that efficient oxygen sinks must be invoked to explain the current atmosphere. http://www.krisstott.com/