A local positive feedback of the tropical Pacific ocean-atmosphere system on interdecadal timescales
Li, CH; Wang, DX; Liang, JY; Gu, DJ; Liu, Y; dxwang@scsio.ac.cn
2006
发表期刊CHINESE SCIENCE BULLETIN
ISSN1001-6538
卷号51期号:5页码:601-606
摘要Interdecadal variability characteristics of ocean-atmosphere interaction in the tropical areas are investigated by using atmospheric reanalysis data and oceanic dataset. Results indicate that due to the ocean-atmosphere system's internal adjustment on interdecadal time scales, the exchanges of latent heat and sensible heat between the ocean and atmosphere are reduced by means of weakening trade wind, causing oceanic thermocline anomalies and resulting in unusual warming of sea surface temperature in the central and eastern Pacific. Meanwhile the increases of sea surface temperature facilitate much more development of convection in the eastern Pacific and excite a local ascending motion in the eastern and anomalous westerlies in the central and eastern Pacific, which further weaken the Walker circulation, and vice versa. Thus these processes constitute an interdecadal mode of positive feedback. This interdecadal feedback of the tropical ocean-atmosphere system is different from the previous conclusion of a so-called midlatitude-driving mechanism, which was used to explain the decadal variability in the tropical Pacific Ocean.
部门归属Chinese Acad Sci, S China Sea Inst Oceanol, Lab Trop Marine Environm Dynam, Guangzhou 510301, Peoples R China; China Meteorol Adm, Inst Trop & Marine Meteorol, Guangzhou 510080, Peoples R China; Univ Wisconsin, Ctr Climat Res, Madison, WI 53706 USA
关键词Tropical Pacific Ocean Interdecadal Variability Positive Feedback Walker Circulation
学科领域Multidisciplinary Sciences
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收录类别sci
资助项目LED
WOS记录号WOS:000236874400015
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/5807
专题热带海洋环境国家重点实验室(LTO)
通讯作者dxwang@scsio.ac.cn
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Li, CH,Wang, DX,Liang, JY,et al. A local positive feedback of the tropical Pacific ocean-atmosphere system on interdecadal timescales[J]. CHINESE SCIENCE BULLETIN,2006,51(5):601-606.
APA Li, CH,Wang, DX,Liang, JY,Gu, DJ,Liu, Y,&dxwang@scsio.ac.cn.(2006).A local positive feedback of the tropical Pacific ocean-atmosphere system on interdecadal timescales.CHINESE SCIENCE BULLETIN,51(5),601-606.
MLA Li, CH,et al."A local positive feedback of the tropical Pacific ocean-atmosphere system on interdecadal timescales".CHINESE SCIENCE BULLETIN 51.5(2006):601-606.
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