The importance of planetary rotation period for ocean heat transport

Cullum, Jodie, Stevens, David and Joshi, Manoj (2014) The importance of planetary rotation period for ocean heat transport. Astrobiology, 14 (8). pp. 645-650. ISSN 1531-1074

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    The climate, and hence potential habitability, of a planet crucially depends on how its atmospheric and oceanic circulation transports heat from warmer to cooler regions. However, previous studies of planetary climate have concentrated on modelling the dynamics of their atmospheres whilst dramatically simplifying the treatment of the oceans, which neglects or misrepresents the effect of the ocean in the total heat transport. Even the majority of studies with a dynamic ocean have used a simple so-called aquaplanet having no continental barriers, which is a configuration which dramatically changes the oceanic dynamics. Here the significance of the response of poleward ocean heat transport to planetary rotation period is shown with a simple meridional barrier – the simplest representation of any continental configuration. The poleward ocean heat transport increases significantly as the planetary rotation period is increased. The peak heat transport more than doubles when the rotation period is increased by a factor of ten. There are also significant changes to ocean temperature at depth, with implications for the carbon cycle. There is strong agreement between the model results and a scale analysis of the governing equations. This result highlights the importance of both planetary rotation period and the ocean circulation when considering planetary habitability.

    Item Type: Article
    Faculty \ School: Faculty of Science > School of Mathematics
    University of East Anglia > Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences
    Faculty of Science > School of Environmental Sciences
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    Depositing User: Pure Connector
    Date Deposited: 09 Jun 2014 14:36
    Last Modified: 25 Jul 2018 09:40
    DOI: 10.1089/ast.2014.1171

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