Imperial College London
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DrPauloCeppi

Faculty of Natural Sciences, Department of Physics

Senior Lecturer in Climate Science
 
 
 
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Contact

 

+44 (0)20 7594 1710p.ceppi Website

 
 
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Location

 

725Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ceppi:2013:10.1175/JCLI-D-12-00414.1,
author = {Ceppi, P and Hartmann, DL},
doi = {10.1175/JCLI-D-12-00414.1},
journal = {Journal of Climate},
pages = {3450--3465},
title = {On the speed of the eddy-driven jet and the width of the hadley cell in the Southern Hemisphere},
url = {http://dx.doi.org/10.1175/JCLI-D-12-00414.1},
volume = {26},
year = {2013}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A strong correlation between the speed of the eddy-driven jet and the width of the Hadley cell is found to exist in the Southern Hemisphere, both in reanalysis data and in twenty-first-century integrations from the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report multimodel archive. Analysis of the space–time spectra of eddy momentum flux reveals that variations in eddy-driven jet speed are related to changes in the mean phase speed of midlatitude eddies. An increase in eddy phase speeds induces a poleward shift of the critical latitudes and a poleward expansion of the region of subtropical wave breaking. The associated changes in eddy momentum flux convergence are balanced by anomalous meridional winds consistent with a wider Hadley cell. At the same time, faster eddies are also associated with a strengthened poleward eddy momentum flux, sustaining a stronger westerly jet in midlatitudes. The proposed mechanism is consistent with the seasonal dependence of the interannual variability of the Hadley cell width and appears to explain at least part of the projected twenty-first-century trends.
AU  - Ceppi,P
AU  - Hartmann,DL
DO  - 10.1175/JCLI-D-12-00414.1
EP  - 3465
PY  - 2013///
SN  - 0894-8755
SP  - 3450
TI  - On the speed of the eddy-driven jet and the width of the hadley cell in the Southern Hemisphere
T2  - Journal of Climate
UR  - http://dx.doi.org/10.1175/JCLI-D-12-00414.1
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000318775900027&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://journals.ametsoc.org/doi/10.1175/JCLI-D-12-00414.1
UR  - http://hdl.handle.net/10044/1/76102
VL  - 26
ER  -
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