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Cited by 1,303

The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

Global Warming and the Weakening of the Tropical Circulation

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Vecchi, Gabriel A., Soden, Brian J.·2007·Journal of Climate

Abstract

This study examines the response of the tropical atmospheric and oceanic circulation to increasing greenhouse gases using a coordinated set of twenty-first-century climate model experiments performed for the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4). The strength of the atmospheric overturning circulation decreases as the climate warms in all IPCC AR4 models, in a manner consistent with the thermodynamic scaling arguments of Held and Soden. The weakening occurs preferentially in the zonally asymmetric (i.e., Walker) rather than zonal-mean (i.e., Hadley) component of the tropical circulation and is shown to induce substantial changes to the thermal structure and circulation of the tropical oceans. Evidence suggests that the overall circulation weakens by decreasing the frequency of strong updrafts and increasing the frequency of weak updrafts, although the robustness of this behavior across all models cannot be confirmed because of the lack of data. As the climate warms, changes in both the atmospheric and ocean circulation over the tropical Pacific Ocean resemble “El Niño–like” conditions; however, the mechanisms are shown to be distinct from those of El Niño and are reproduced in both mixed layer and full ocean dynamics coupled climate models. The character of the Indian Ocean response to global warming resembles that of Indian Ocean dipole mode events. The consensus of model results presented here is also consistent with recently detected changes in sea level pressure since the mid–nineteenth century.

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Metadata

Authors
Vecchi, G. A., & Soden, B. J.
Venue
Journal of Climate
Published
2007-09-01
Volume
20
Issue
17
Pages
4316-4340
ISSN
  • 0894-8755 (ISSN-L)
  • 1520-0442
OpenAlex
W2052734296
Cited by
1,303
References
3
FWCI
38.29
Type
journal article
Language
en
Open access
bronze

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