Extratropical Cooling, Interhemispheric Thermal Gradients, and Tropical Climate Change

Annual Review of Earth and Planetary Sciences - Tập 40 Số 1 - Trang 383-412 - 2012
John C. H. Chiang1, Andrew R. Friedman2
1University of California, Berkeley
2Department of Geography and Berkeley Atmospheric Sciences Center, University of California, Berkeley, California 94720;

Tóm tắt

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.

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Thông tin xuất bản

Annual Review of Earth and Planetary Sciences

Tập 40 Số 1

383-412

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