Schwendike, J, Govekar, P, Reeder, MJ et al. (3 more authors) (2014) Local partitioning of the overturning circulation in the tropics and the connection to the Hadley and Walker circulations. Journal of Geophysical Research: Atmospheres, 119 (3). pp. 1322-1339. ISSN 2169-897X
Abstract
Conceptually, it is useful to partition the three-dimensional tropical circulation into meridional and zonal components, namely, the Hadley and Walker circulations. The averaging involved in their definitions can introduce ambiguities. These problems can be circumvented by first partitioning the total vertical mass flux into components associated with overturning in the meridional and zonal directions, respectively, called here the local Hadley and local Walker circulations. Defining the local Hadley and local Walker circulations this way ensures the pair of two-dimensional overturning circulations can be added to give the original three-dimensional circulation, even when the averages are taken over limited domains. The method is applied to the vertical motion from the ERA-Interim reanalysis for the period 1979 to 2009. One important result is that the local Hadley circulation responds much more strongly to ENSO than the local Walker circulation, even though the local Walker circulation in the central Pacific weakens during El Niño years and strengthens and widens during La Niña years.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014 American Geophysical Union. This is the peer reviewed version of the following article: Schwendike, J., P. Govekar, M. J. Reeder, R. Wardle, G. J. Berry, and C. Jakob (2014), Local partitioning of the overturning circulation in the tropics and the connection to the Hadley and Walker circulations, J. Geophys. Res. Atmos., 119, 1322–1339, which has been published in final form at http://dx.doi.org/10.1002/2013JD020742. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 03 Jun 2016 14:24 |
Last Modified: | 30 Oct 2020 13:09 |
Published Version: | http://dx.doi.org/10.1002/2013JD020742 |
Status: | Published |
Publisher: | American Geophysical Union |
Identification Number: | 10.1002/2013JD020742 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:92743 |