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Kang, Sarah M.
Climate Dynamics Lab
Research Interests
  • Climate change, ITCZ, Atmospheric general circulation, Polar amplification

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Contribution of ocean overturning circulation to tropical rainfall peak in the Northern Hemisphere

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dc.contributor.author Frierson, Dargan M.W. ko
dc.contributor.author Hwang, Yen-Ting ko
dc.contributor.author Fuckar, Neven S. ko
dc.contributor.author Seager, Richard ko
dc.contributor.author Kang, Sarah M. ko
dc.contributor.author Donohoe, Aaron ko
dc.contributor.author Maroon, Elizabeth A. ko
dc.contributor.author Liu, Xiaojuan ko
dc.contributor.author Battisti, David S. ko
dc.date.available 2014-04-10T02:34:30Z -
dc.date.created 2013-11-19 ko
dc.date.issued 2013-11 -
dc.identifier.citation NATURE GEOSCIENCE, v.6, no.11, pp.940 - 944 ko
dc.identifier.issn 1752-0894 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/3996 -
dc.identifier.uri https://www.nature.com/articles/ngeo1987 ko
dc.description.abstract Rainfall in the tropics is largely focused in a narrow zonal band near the Equator, known as the intertropical convergence zone. On average, substantially more rain falls just north of the Equator. This hemispheric asymmetry in tropical rainfall has been attributed to hemispheric asymmetries in ocean temperature induced by tropical landmasses. However, the ocean meridional overturning circulation also redistributes energy, by carrying heat northwards across the Equator. Here, we use satellite observations of the Earth's energy budget, atmospheric reanalyses and global climate model simulations to study tropical rainfall using a global energetic framework. We show that the meridional overturning circulation contributes significantly to the hemispheric asymmetry in tropical rainfall by transporting heat from the Southern Hemisphere to the Northern Hemisphere, and thereby pushing the tropical rain band north. This northward shift in tropical precipitation is seen in global climate model simulations when ocean heat transport is included, regardless of whether continents are present or not. If the strength of the meridional overturning circulation is reduced in the future as a result of global warming, as has been suggested, precipitation patterns in the tropics could change, with potential societal consequences. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher NATURE PUBLISHING GROUP ko
dc.subject INTERTROPICAL CONVERGENCE ZONE ko
dc.subject EASTERN PACIFIC ko
dc.subject SOUTHERN-OCEAN ko
dc.subject MODEL ko
dc.subject ITCZ ko
dc.subject ATMOSPHERE ko
dc.subject SYSTEM ko
dc.title Contribution of ocean overturning circulation to tropical rainfall peak in the Northern Hemisphere ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84887053995 ko
dc.identifier.wosid 000326505800016 ko
dc.type.rims ART ko
dc.description.wostc 9 *
dc.description.scopustc 7 *
dc.date.tcdate 2014-10-18 *
dc.date.scptcdate 2014-07-12 *
dc.identifier.doi 10.1038/ngeo1987 ko
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