Quantitative Analysis of the Feedback Induced by the Freshwater Flux in the Tropical Pacific Using CMIP5

doi:10.1007/s00376-015-5064-0

IOCAS-IR > 海洋环流与波动重点实验室

	Quantitative Analysis of the Feedback Induced by the Freshwater Flux in the Tropical Pacific Using CMIP5
	Zhi Hai 1,2; Zhang Rong-Hua3 ; Lin Pengfei 4; Wang Lanning 5
	2015-10-01
发表期刊	ADVANCES IN ATMOSPHERIC SCIENCES
卷号	32 期号:10 页码:1341-1353
文章类型	Article
摘要	Freshwater flux (FWF) directly affects sea surface salinity (SSS) and hence modulates sea surface temperature (SST) in the tropical Pacific. This paper quantifies a positive correlation between FWF and SST using observations and simulations of the fifth phase of the Coupled Model Intercomparison Project (CMIP5) to analyze the interannual variability in the tropical Pacific. Comparisons among the displacements of FWF, SSS and SST interannual variabilities illustrate that a large FWF variability is located in the west-central equatorial Pacific, covarying with a large SSS variability, whereas a large SST variability is located in the eastern equatorial Pacific. Most CMIP5 models can reproduce the fact that FWF leads to positive feedback to SST through an SSS anomaly as observed. However, the difference in each model's performance results from different simulation capabilities of the CMIP5 models in the magnitudes and positions of the interannual variabilities, including the mixed layer depth and the buoyancy flux in the equatorial Pacific. SSS anomalies simulated from the CMIP5 multi-model are sensitive to FWF interannual anomalies, which can lead to differences in feedback to interannual SST variabilities. The relationships among the FWF, SSS and SST interannual variabilities can be derived using linear quantitative measures from observations and the CMIP5 multi-model simulations. A 1 mm d(-1) FWF anomaly corresponds to an SSS anomaly of nearly 0.12 psu in the western tropical Pacific and a 0.11 degrees C SST anomaly in the eastern tropical Pacific.
关键词	Feedback Freshwater Flux Cmip5 Correlation
DOI	10.1007/s00376-015-5064-0
收录类别	SCI
语种	英语
WOS记录号	WOS:000359011900003
引用统计	被引频次：12[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/337002/49778
专题	海洋环流与波动重点实验室
作者单位	1.Nanjing Univ Informat Sci & Technol, Earth Syst Modeling Ctr, Nanjing 210044, Jiangsu, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Coll Atmospher Sci, Nanjing 210044, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China 5.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Zhi Hai,Zhang Rong-Hua,Lin Pengfei,et al. Quantitative Analysis of the Feedback Induced by the Freshwater Flux in the Tropical Pacific Using CMIP5[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2015,32(10):1341-1353.
APA	Zhi Hai,Zhang Rong-Hua,Lin Pengfei,&Wang Lanning.(2015).Quantitative Analysis of the Feedback Induced by the Freshwater Flux in the Tropical Pacific Using CMIP5.ADVANCES IN ATMOSPHERIC SCIENCES,32(10),1341-1353.
MLA	Zhi Hai,et al."Quantitative Analysis of the Feedback Induced by the Freshwater Flux in the Tropical Pacific Using CMIP5".ADVANCES IN ATMOSPHERIC SCIENCES 32.10(2015):1341-1353.

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