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Diversity of Planetary Atmospheric Circulations and Climates in a Simplified General Circulation Model

Published online by Cambridge University Press:  29 April 2014

Yixiong Wang  and
Peter Read
Yixiong Wang
Affiliation:
Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, OX1 3PU, Oxford, UK email: y.wang1@physics.ox.ac.uk
Peter Read
Affiliation:
Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, OX1 3PU, Oxford, UK email: p.read1@physics.ox.ac.uk
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Abstract

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The parametric dependence of terrestrial planetary atmospheric circulations and climates on characteristic parameters is studied. A simplified general circulation model—PUMA is employed to investigate the dynamic effects of planetary rotation rate and equator-to-pole temperature difference on the circulation and climate of terrestrial planetary atmospheres. Five different types of circulation regime are identified by mapping the experimental results in a 2-D parameter space defined by thermal Rossby number and frictional Taylor number. The effect of the transfer and redistribution of radiative energy is studied by building up a new two-band semi-gray radiative-convective scheme, which is capable of modelling greenhouse and anti-greenhouse effects while keeping the tunable parameters as few as possible. The results will provide insights into predicting the habitability of terrestrial exoplanets.

Keywords

Earthhydrodynamicsradiatve transfer
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S293: Formation, Detection, and Characterization of Extrasolar Habitable Planets , August 2012 , pp. 297 - 302
Copyright
Copyright © International Astronomical Union 2014 

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