Trajectory patterns of the annual cycle of the heat centre of the Indo-Pacific warm pool
Shan, HX; Guan, YP; Huang, JP; Dong, CM; guan@scsio.ac.cn; cmdong@gmail.com
2017
发表期刊INTERNATIONAL JOURNAL OF CLIMATOLOGY
卷号37期号:2页码:637-647
摘要The modulated annual cycle (MAC) of the Indo-Pacific warm pool (IPWP) heat centre location is investigated using the empirical mode decomposition-ensemble empirical mode decomposition method. The MAC and its interannual variability mainly affect the zonal and vertical locations of the heat centre; in fall and winter of El Nino years, the heat centre moves eastward from its normal location, with very little change in its meridional position. Four patterns of the heat centre trajectory in the IPWP are identified using the self-organizing map algorithm. Patterns 1 and 3 are both similar to a saddle, but pattern 1 is more winding. The shapes of patterns 2 and 4 are similar, but tilt in different directions: pattern 2 tilts southwest whereas pattern 4 tilts west. Of all the four patterns, the persistence of pattern 2 is generally relatively high. The trajectory of the heat centre develops in the sequence of patterns: 1-2-4-3-1. Pattern 1 (pattern 4) is related to the cold (warm) phase of the El Nino-Southern Oscillation (ENSO), while pattern 2 (pattern 3) corresponds to the negative (positive) phase of Indian Ocean dipole (IOD). The sequence of patterns in the trajectory of the heat centre in the IPWP is related to the IOD-ENSO interactions on a biennial timescale.
部门归属[Shan, Haixia; Dong, Changming] Nanjing Univ Informat Sci & Technol, Coll Marine Sci, Ocean Modeling & Observat Lab, Nanjing 210044, Jiangsu, Peoples R China; [Shan, Haixia; Guan, Yuping] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China; [Shan, Haixia] Nanjing Univ Informat Sci & Technol, Jiangsu Engn Technol Res Ctr Marine Environm Dete, Nanjing, Jiangsu, Peoples R China; [Shan, Haixia] Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China; [Shan, Haixia] Nanjing Univ Informat Sci & Technol, Joint Int Res Lab Climate & Environm Change, Nanjing, Jiangsu, Peoples R China; [Shan, Haixia] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China; [Huang, Jianping] Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou, Peoples R China; [Dong, Changming] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA
关键词Heat Centre Indo-pacific Warm Pool Self-organizing Map Ensemble Empirical Mode Decomposition
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16425
专题热带海洋环境国家重点实验室(LTO)
通讯作者guan@scsio.ac.cn; cmdong@gmail.com
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GB/T 7714
Shan, HX,Guan, YP,Huang, JP,et al. Trajectory patterns of the annual cycle of the heat centre of the Indo-Pacific warm pool[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(2):637-647.
APA Shan, HX,Guan, YP,Huang, JP,Dong, CM,guan@scsio.ac.cn,&cmdong@gmail.com.(2017).Trajectory patterns of the annual cycle of the heat centre of the Indo-Pacific warm pool.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(2),637-647.
MLA Shan, HX,et al."Trajectory patterns of the annual cycle of the heat centre of the Indo-Pacific warm pool".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.2(2017):637-647.
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