Preliminary analyses on characteristics of sea surface temperatures in Kuroshio and its extension and relations to atmospheric circulations
Wang, SS; Guan, YP; Li, ZJ; Chao, Y; Huang, JP; guan@scsio.ac.cn
2012
发表期刊ACTA PHYSICA SINICA
ISSN1000-3290
卷号61期号:16页码:169201
摘要A sea surface temperature (SST) based index, denoted as KI, is designed to characterize the holistic feature of Kuroshio east of the Tokara-kaikyo and its extension on the purpose of predict its SST trend. The KI is calculated on the base of the Hadley Center's monthly SSTs during the period 1941-2009. The wavelet analysis showed that the KI displays inter-annual and inter-decadal oscillations, dominated by quasi-triennial, quasi 7-yr and 20-yr time scales. In addition, the KI is shown to be phase-locking to seasonal cycles. It is found that there are significant temporally-lag correlations between the KI and the Pacific decadal oscillation (PDO) index as well as between the KI and the ENSO index. A set of composition analyses using the NCEP/NCAR reanalyses indicate that when the KI shows a positive anomaly, the SST becomes abnormally warm in the equatorial eastern. Pacific, the Hadley circulation is intensified, and consequently the transportation of the westerly momentum is enhanced. The enhanced Hadley circulation and transportation of the westerly momentum give rise to the deepened Aleutian low pressure, then cool the Kuroshio extension and the north Pacific basin and cause the KE extend east. The above "ENSO-PDO-Kuroshio" process need some response time, that is to say, we can forecast the SST variation on the Kuroshio on the basis of the ENSO and PDO, which is very significant to predict the climate in China.
部门归属[Wang Shan-Shan; Huang Jian-Ping] Lanzhou Univ, Coll Atmospher Sci, Lanzhou 730000, Peoples R China; [Guan Yu-Ping] Chinese Acad Sci, S China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Li Zhi-Jin; Chao Yi] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
关键词Kuroshio Sea Surface Temperature Pacific Decadal Oscillation El Nino-southern Oscillation
学科领域Physics, Multidisciplinary
语种中文
资助项目LTO
WOS记录号WOS:000309089200075
引用统计
被引频次:3[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/344004/10135
专题热带海洋环境国家重点实验室(LTO)
通讯作者guan@scsio.ac.cn
推荐引用方式
GB/T 7714
Wang, SS,Guan, YP,Li, ZJ,et al. Preliminary analyses on characteristics of sea surface temperatures in Kuroshio and its extension and relations to atmospheric circulations[J]. ACTA PHYSICA SINICA,2012,61(16):169201.
APA Wang, SS,Guan, YP,Li, ZJ,Chao, Y,Huang, JP,&guan@scsio.ac.cn.(2012).Preliminary analyses on characteristics of sea surface temperatures in Kuroshio and its extension and relations to atmospheric circulations.ACTA PHYSICA SINICA,61(16),169201.
MLA Wang, SS,et al."Preliminary analyses on characteristics of sea surface temperatures in Kuroshio and its extension and relations to atmospheric circulations".ACTA PHYSICA SINICA 61.16(2012):169201.
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