DOI: 10.1175/JCLI-D-13-00176.1
Scopus记录号: 2-s2.0-84893826367
论文题名: The influence of tropical pacific SST anomaly on surface air temperature in China
作者: Jia X.J. ; Lin H. ; Yao X.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 4 起始页码: 1425
结束页码: 1444
语种: 英语
英文摘要: The influence of the tropical Pacific sea surface temperature (SST) on the wintertime surface air temperature (SAT) in China is investigated using both the observational data and the output of coupled ocean-atmosphere numerical models during the period from 1960 to 2006. A singular value decomposition analysis (SVD) is applied between 500-hPa geopotential height (Z500) in the NorthernHemisphere and SST in the tropical PacificOcean to get the tropical Pacific SST-forced atmospheric patterns. The association of the SAT over China and the tropical Pacific SST is measured by calculating the temporal correlation coefficient (TCC) between the SAT and the expansion coefficient of the atmospheric component of the leading two SVDmodes. Results show that the SAT over China is significantly correlated to the second SVD mode (SVD2). The SST component of SVD2 is characterized by negative tropical Pacific SST anomalies centered over the midequatorial Pacific Ocean. The atmospheric component of SVD2 (ASVD2) shares many similarities in spatial structures to the Arctic Oscillation (AO). The time variation of ASVD2, however, is found more closely correlated to the variation of SAT over China than the AO. When SVD2 is in its positive phase, the SAT over China tends to be warmer than normal. Further analysis indicates that the TCC between the SAT in China and ASVD2 is largely decreased after the long-term climate trend is removed. The time variability of the tropical Pacific SST-forced large-scale atmospheric patterns and its relationship to SAT are reasonably captured by the multimodel ensemble (MME) seasonal forecasts. An examination of theMMEforecast skill indicates thatASVD2 contributes significantly to the TCCskill ofMMEforecasts. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50981
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang, China; State Key Laboratory of Numerical Modelling for Atmospheric Sciences, Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Atmospheric Numerical Weather Prediction Research, Environment Canada, Dorval, QC, Canada; Department of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang, China
Recommended Citation:
Jia X.J.,Lin H.,Yao X.. The influence of tropical pacific SST anomaly on surface air temperature in China[J]. Journal of Climate,2014-01-01,27(4)