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Sensitivity of ENSO Variability to Pacific Freshwater Flux Adjustment in the Community Earth System Model
Kang Xianbiao1,2,3; Huang Ronghui1,2; Wang Zhanggui1,2,3; Zhang Rong-Hua4; Kang, XB (reprint author), Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing 100190, Peoples R China.
2014-09-01
发表期刊ADVANCES IN ATMOSPHERIC SCIENCES
卷号31期号:5页码:1009-1021
文章类型Article
摘要The effects of freshwater flux (FWF) on modulating ENSO have been of great interest in recent years. Large FWF bias is evident in Coupled General Circulation Models (CGCMs), especially over the tropical Pacific where large precipitation bias exists due to the so-called "double ITCZ" problem. By applying an empirical correction to FWF over the tropical Pacific, the sensitivity of ENSO variability is investigated using the new version (version 1.0) of the NCAR's Community Earth System Model (CESM1.0), which tends to overestimate the interannual variability of ENSO accompanied by large FWF into the ocean. In response to a small adjustment of FWF, interannual variability in CESM1.0 is reduced significantly, with the amplitude of FWF being reduced due to the applied adjustment part whose sign is always opposite to that of the original FWF field. Furthermore, it is illustrated that the interannual variability of precipitation weakens as a response to the reduced interannual variability of SST. Process analysis indicates that the interannual variability of SST is damped through a reduced FWF-salt-density-mixing-SST feedback, and also through a reduced SST-wind-thermocline feedback. These results highlight the importance of FWF in modulating ENSO, and thus should be adequately taken into account to improve the simulation of FWF in order to reduce the bias of ENSO simulations by CESM.
关键词Enso Freshwater Flux Cesm
学科领域Meteorology & Atmospheric Sciences
DOI10.1007/s00376-014-3232-2
收录类别SCI
语种英语
WOS记录号WOS:000341907300002
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/23967
专题海洋环流与波动重点实验室
通讯作者Kang, XB (reprint author), Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing 100190, Peoples R China.
作者单位1.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100029, Peoples R China
3.State Ocean Adm, Natl Marine Environm Forecasting Ctr, Beijing 100081, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
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GB/T 7714
Kang Xianbiao,Huang Ronghui,Wang Zhanggui,et al. Sensitivity of ENSO Variability to Pacific Freshwater Flux Adjustment in the Community Earth System Model[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2014,31(5):1009-1021.
APA Kang Xianbiao,Huang Ronghui,Wang Zhanggui,Zhang Rong-Hua,&Kang, XB .(2014).Sensitivity of ENSO Variability to Pacific Freshwater Flux Adjustment in the Community Earth System Model.ADVANCES IN ATMOSPHERIC SCIENCES,31(5),1009-1021.
MLA Kang Xianbiao,et al."Sensitivity of ENSO Variability to Pacific Freshwater Flux Adjustment in the Community Earth System Model".ADVANCES IN ATMOSPHERIC SCIENCES 31.5(2014):1009-1021.
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