导致西太平洋海温异常的主要因素研究

北京大学学报（自然科学版）

导致西太平洋海温异常的主要因素研究

宋阳阳¹,王志福²,刘征宇¹

1. 北京大学气候与海?气实验室, 北京大学物理学院大气与海洋科学系, 北京 100871; 2. 南京信息工程大学气象灾害省部共建教育部重点实验室, 南京 210044;

收稿日期:2012-10-24 出版日期:2013-09-20 发布日期:2013-09-20

Study of the Main Reasons Causing the Western Pacific SST Anomaly

SONG Yangyang¹, WANG Zhifu², LIU Zhengyu¹

1. Laboratory for Climate and Ocean-Atmosphere Studies LaCOAS, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871; 2. Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology, Nanjing 210044;

Received:2012-10-24 Online:2013-09-20 Published:2013-09-20

摘要/Abstract

摘要： 通过对不同区域海表面温度(SST)资料做超前/滞后相关性分析, 研究导致西太平洋SST异常的主要因素。基于东、西太平洋相互作用理论和印度洋电容器效应理论, 将热带西太平洋SST异常的变化分别与热带东太平洋和印度洋SST异常做超前/滞后相关性分析, 得到每个格点与强迫场之间相关性最显著的月份, 从时间的角度研究西太平洋SST异常变化与东太平洋和印度洋之间的关系。按照上述两种理论, 由于海洋的比热大, 热响应时间较长, 西太平洋SST变化应滞后于东太平洋或印度洋2~3个月。分析结果显示, 在El Nino和La Nina事件下, 西太平洋SST异常变化均超前于东太平洋1~2个月时相关性最显著; 同时, 西太平洋SST异常变化超前于印度洋3~4个月时相关性最显著。这表明热带东太平洋和印度洋都不是导致西太平洋SST异常变化的主要因素, 西太平洋SST异常可能由多种因素共同作用所导致。

关键词: 海气相互作用, 西太平洋, 超前/滞后相关性分析, 海温异常

Abstract: Applying lead/lag correlation analysis on Sea Surface Temperature (SST) in different regions, the main reasons that cause the Western Pacific SST anomaly were investigated. Based on the theories of Pacific-East Asian teleconnection and Indian Ocean capacitor effect, the pointwise maximum correlation of SST anomaly in the Western Pacific with that in the Eastern Pacific and the Tropical Indian Ocean was analyzed, as well as the corresponding lead-lag time (in month). According to the mechanisms mentioned above, the SST variations of the Eastern Pacific or the Tropical Indian Ocean are expected to lead SST variations of Western Pacific by 2?3 months as the response time of ocean is very long. The results show that the SST anomaly in the Western Pacific leads the Eastern Pacific by 1?2 months (under the conditions of both El Nino and La Nina) and leads the Tropical Indian Ocean by 3?4 months. This indicates that neither the Eastern Pacific nor the Indian Ocean is the main reason that causes the SST anomaly of the Western Pacific. The reason that causes SST anomaly of the Western Pacific is very complicated and may be caused by many different factors.

Key words: air-sea interaction, Western Pacific, lead/lag correlation analysis, SST anomaly

中图分类号:

P461

宋阳阳,王志福,刘征宇. 导致西太平洋海温异常的主要因素研究[J]. 北京大学学报（自然科学版）.

SONG Yangyang,WANG Zhifu,LIU Zhengyu. Study of the Main Reasons Causing the Western Pacific SST Anomaly[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://xbna.pku.edu.cn/CN/

https://xbna.pku.edu.cn/CN/Y2013/V49/I5/806