Extratropical cooling, interhemispheric thermal gradients, and tropical climate change

Chiang, John C. H. and Friedman, Andrew R. (2012) Extratropical cooling, interhemispheric thermal gradients, and tropical climate change. Annual Review of Earth and Planetary Sciences, 40 (1). pp. 383-412. ISSN 0084-6597

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Abstract

Recent studies suggest the existence of a global atmospheric teleconnection of extratropical cooling to the tropical rainfall climate, mediated through the development of a thermal contrast between the hemispheres—an interhemispheric thermal gradient. This teleconnection has been largely motivated by studies that show a global synchronization of rapid climate change during abrupt climate changes of the last glacial period, in addition to attribution studies of twentieth-century Sahel drought and studies that examined the climate impacts of anthropogenic aerosols. This research has led to interesting developments in atmospheric dynamics of the underlying mechanisms and in applications toward understanding past and present tropical climate change. The emerging teleconnection hypothesis promises to offer new insights into understanding future patterns of tropical rainfall changes due to interhemispheric thermal gradients from greenhouse warming, aerosols, and land-use change.

Item Type:	Article
Uncontrolled Keywords:	abrupt climate change,atmospheric teleconnections,paleoclimatology,tropical climate dynamics,sdg 13 - climate action,sdg 15 - life on land ,/dk/atira/pure/sustainabledevelopmentgoals/climate_action
Faculty \ School:	Faculty of Science > School of Environmental Sciences
Related URLs:	https://www.annualreviews.org/doi/10.114...
Depositing User:	LivePure Connector
Date Deposited:	10 Dec 2025 16:30
Last Modified:	17 Dec 2025 14:31
URI:	https://ueaeprints.uea.ac.uk/id/eprint/101358
DOI:	10.1146/annurev-earth-042711-105545

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