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Extratropical Cooling, Interhemispheric Thermal Gradients, and Tropical Climate Change

Journal Article · · Annual Review of Earth and Planetary Sciences
 [1];  [2]
  1. University of California, Berkeley
  2. Department of Geography and Berkeley Atmospheric Sciences Center, University of California, Berkeley, California 94720
+ Show Author Affiliations
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.
Research Organization:
University of California, Berkeley, CA (United States)
Sponsoring Organization:
USDOE SC Office of Biological and Environmental Research (SC-23)
DOE Contract Number:
FG02-08ER64588
OSTI ID:
1053834
Report Number(s):
DOE/08ER64588-1
Journal Information:
Annual Review of Earth and Planetary Sciences, Journal Name: Annual Review of Earth and Planetary Sciences Journal Issue: 1 Vol. 40; ISSN 0084-6597
Publisher:
Annual Reviews
Country of Publication:
United States
Language:
English

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