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Results from a Set of Three-Dimensional Numerical Experiments of a Hot Jupiter AtmosphereWe present highlights from a large set of simulations of a hot Jupiter atmosphere, nominally based on HD 209458b, aimed at exploring both the evolution of the deep atmosphere, and the acceleration of the zonal flow or jet. We find the occurrence of a super-rotating equatorial jet is robust to changes in various parameters, and over long timescales, even in the absence of strong inner or bottom boundary drag. This jet is diminished in one simulation only, where we strongly force the deep atmosphere equator-to-pole temperature gradient over long timescales. Finally, although the eddy momentum fluxes in our atmosphere show similarities with the proposed mechanism for accelerating jets on tidally-locked planets, the picture appears more complex. We present tentative evidence for a jet driven by a combination of eddy momentum transport and mean flow.
Document ID
20170008494
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Mayne, Nathan J.
(Exeter Univ. United Kingdom)
Debras, Flirian
(Exeter Univ. United Kingdom)
Baraffe, Isabelle
(Exeter Univ. United Kingdom)
Thuburn, John
(Exeter Univ. United Kingdom)
Amundsen, David S.
(Columbia Univ. New York, NY, United States)
Acreman, David M.
(Exeter Univ. United Kingdom)
Smith, Chris
(Met Office (Meteorological Office) Devon, United Kingdom)
Browning, Matthew K.
(Exeter Univ. United Kingdom)
Manners, James
(Met Office (Meteorological Office) Devon, United Kingdom)
Wood Nigel
(Met Office (Meteorological Office) Devon, United Kingdom)
Date Acquired
September 5, 2017
Publication Date
August 11, 2017
Publication Information
Publication: Astronomy and Astrophysics
Publisher: EDP Sciences
Volume: 604
ISSN: 0004-6361
e-ISSN: 1432-0746
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN46380
Funding Number(s)
CONTRACT_GRANT: NNX14AB99A
Distribution Limits
Public
Copyright
Other
Keywords
hydrodynamics
planets and satellites: atmospheres
radiative transfer

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