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SUMMARY:3D simulations of oxygenated rocky exoplanet atmospheres and obser
 vational predictions - Gregory Cooke (IoA)
DTSTART:20231003T120000Z
DTEND:20231003T130000Z
UID:TALK205570@talks.cam.ac.uk
CONTACT:Dr Emily Sandford
DESCRIPTION:Following the Great Oxidation Event\, Earth’s atmosphere has
  been oxygenated for the past 2.4 billion years\, bringing changes to our 
 biosphere which eventually enabled the proliferation of animal life. I use
  a three-dimensional Earth System Model\, which employs coupled physics an
 d chemistry\, known as the Whole Atmosphere Community Climate Model (WACCM
 6)\, to simulate Earth’s oxygenated paleoclimates. Additionally\, I perf
 orm simulations of TRAPPIST-1e and Proxima Centauri b (two habitable zone 
 exoplanets) over a range of oxygen (O2) concentrations.  I use these simul
 ations as input to the Planetary Spectrum Generator (a radiative transfer 
 suite) to predict telescope observations from these exoplanet scenarios. I
  will explore how atmospheric O2 influences atmospheric chemistry\, planet
 ary habitability\, and the observability of biosignature gases in exoplane
 t atmospheres from afar.
LOCATION:Ryle seminar room + ONLINE - Details to be sent by email
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