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On Mars too, expect macroweather

Lovejoy, S; Muller, J; Boisvert, JP; (2014) On Mars too, expect macroweather. Geophysical Research Letters , 41 (21) pp. 7694-7700. 10.1002/2014GL061861. Green open access

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Terrestrial atmospheric and oceanic spectra show drastic transitions at τw ≈10 days and τow ≈ 1 year respectively; this has been theorized as the lifetime of planetary scale structures. For wind and temperature, the forms of the low and high frequency parts of the spectra (macroweather, weather) as well as the τw can be theoretically estimated, the latter depending notably on the solar induced turbulent energy flux. We extend the theory to other planets and test it using Viking lander and reanalysis data from Mars. When the Martian spectra are scaled by the theoretical amount, they agree very well with their terrestrial atmospheric counterparts. We discuss the implications for understanding planetary fluid dynamical systems.

Type: Article
Title: On Mars too, expect macroweather
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/2014GL061861
Publisher version: http://dx.doi.org/10.1002/2014GL061861
Language: English
Additional information: © 2014. American Geophysical Union. All Rights Reserved. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/1455566
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