Western boundary currents in the atmosphere of Mars

Joshi, M.M. ORCID: https://orcid.org/0000-0002-2948-2811, Lewis, S.R., Read, P.L. and Catling, D.C. (1994) Western boundary currents in the atmosphere of Mars. Nature, 367 (6463). pp. 548-552. ISSN 0028-0836

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Western boundary currents (WBCs) are an intensification of north-south flow adjacent to an eastward-facing meridional boundary. Although most familiar in the oceans (where the Gulf Stream is the best known example), WBCs also occur in the Earth's troposphere. The main example being the East African Jet, which is thought to play an important role in the Asiatic monsoon. Here we identify boundary currents in a different geophysical context: a numerical simulation of the atmosphere of Mars. In our simulation. WBCs exist in association with significant cross-equatorial flow and the presence of equatorial martian topography. Which has vertical scale far exceeding terrestrial relief. The intensity and width of these currents depend on model parameters, notably the surface drag. From a comparison of our results with other martian models we suggest that WBCs have already been simulated, although they were not previously identified as such. The available observational evidence appears to be consistent with the presence of martian WBCs, which may be important in the generation of global and great dust storms.

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups: University of East Anglia Schools > Faculty of Science > Tyndall Centre for Climate Change Research
Faculty of Science > Research Centres > Tyndall Centre for Climate Change Research
Faculty of Science > Research Groups > Climatic Research Unit
Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
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Depositing User: Pure Connector
Date Deposited: 24 Feb 2014 12:58
Last Modified: 20 Oct 2023 00:57
URI: https://ueaeprints.uea.ac.uk/id/eprint/47777
DOI: 10.1038/367548a0

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