海洋气象学

南印度洋偶极子及其影响研究进展

  • 徐海明 ,
  • 张岚 ,
  • 杜岩
展开
  • 1. 南京信息工程大学,大气科学学院,江苏 南京 210044; 2. 中国科学院南海海洋研究所,热带海洋环境动力学重点实验室,广东 广州 510301
徐海明(1964—),男,浙江省嘉兴市人,教授,博士生导师。主要从事季风动力学、区域气候海气相互作用研究。E-mail: hxu@nuist.edu.cn

收稿日期: 2013-04-20

  修回日期: 2013-04-20

  网络出版日期: 2013-04-20

基金资助

国家重点基础研究发展计划(“973”计划)项目(2010CB950302)

Research progress of southern Indian Ocean Dipole and its influence

  • XU Hai-ming ,
  • ZHANG Lan ,
  • DU Yan
Expand
  • 1. Department of Atmospheric Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China; 2. Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

Received date: 2013-04-20

  Revised date: 2013-04-20

  Online published: 2013-04-20

摘要

回顾了对南印度洋副热带海气相互作用的研究,总结了南印度洋偶极子事件背景下的气候变化。印度洋海表温度的方差表明南印度洋是整个印度洋海温变率最强的区域,年际海温变化最显著的特征就是海温呈现西南—东北向的偶极子型分布,被称为南印度洋偶极子(Southern Indian Ocean Dipole, SIOD)。南印度洋海温偶极子的形成主要是受大尺度大气环流调整的影响。南印度洋副热带反气旋环流异常引起了印度洋热带东风异常和副热带西风异常的变化,影响了潜热通量、上升流和Ekman热输送,进而引起了海温变化。SIOD对热带和热带外大气环流也有影响,尤其会影响亚洲夏季风降水异常,例如我国的降水异常和南印度洋偶极子海温异常具有显著相关关系。此外,SIOD模态所引起的经向环流异常与南海、菲律宾地区的反气旋环流异常也有紧密联系。

本文引用格式

徐海明 , 张岚 , 杜岩 . 南印度洋偶极子及其影响研究进展[J]. 热带海洋学报, 2013 , 32(1) : 1 -7 . DOI: 10.11978/j.issn.1009-5470.2013.01.001

Abstract

This paper reviews the studies on the southern Indian Ocean (SIO) air-sea interaction and summarizes the climate variability in the SIO at the inter-annual time scale. Variance and correlation analysis of the Indian Ocean sea surface temperature (SST) indicates that a strong dipole oscillation occurs in the SIO, the so-called Southern Indian Ocean Dipole (SIOD). Large-scale atmospheric circulation in the midlatitude of the Southern Hemisphere plays a role in the formation of SIOD. A subtropical anticyclonic anomaly contributes to the tropical easterly anomalies and midlatitude westerly anomalies; this results in anomalies in latent heat flux, upwelling, and Ekman heat transport, and then changes the SST. Through changing the heat distribution in the atmosphere in the South Asia and tropical Pacific, the SIOD has an impact on tropical atmospheric circulation. In particular, it remotely influences the Asian summer monsoon rainfall; for example, a close relationship is found between SIOD and rainfall over China. In addition, the anomaly induced by the SIOD can result in anticyclonic atmosphere anomalies over the South China Sea and Philippine Islands.

参考文献

[1] SAJI N H, GOSWAMI B N, VINAYACHANDRAN P N,et al. A dipole mode in the tropical Indian Ocean[J]. Nature, 1999,401:360-363.
[2] WEBSTER P J, MOORE, LOSHNIGG J P,et al. Coupled ocean-atmosphere dynamics in the Indian Ocean during 1997-98[J]. Nature, 1999,401:356-360.
[3] YU L, RIENECHER M M. Indian Ocean warming of 1997-1998[J]. J Geophys Res, 2000,105C7:16923-16939.
[4] REASON, C J C, MULENGA H M. Relationship between South African rain fall and SST anomalies in the SW Indian Ocean[J]. Int J Climatol, 1999,19:1651-1673.
[5] BEHERA S K, YAMAGATA T. Subtropical SST dipole events in the southern Indian Ocean[J]. Geophysical Research Letters, 2001,28:327-331.
[6] 杨秋明. 南印度洋副热带偶极子型海温异常与全球环流和我国降水变化的关系[J]. 海洋学报, 2006,283:47-56.
[7] 范可,王会军. 有关南半球大气环流与东亚气候的关系研究的若干新进展[J]. 大气科学, 2006,203:402-412.
[8] 王会军,薛峰. 索马里急流的年际变化及其半球间水汽输送和东亚季风降水的影响[J]. 地球物理学报, 2003,461:18-25.
[9] 周天军,宇如聪,李薇,等. 20世纪印度洋气候变率特征分析[J]. 气象学报, 2001,59:257-269.
[10] YOO S H. , YANG S, HO C H. Variability of the Indian Ocean sea surface temperature and its impacts on Asian- Australian monsoon climate[J] J Geophys Res, 2006,111:D03108.doi:10.1029/2005JD006001
[11] SUZUKI R, BEHERA S K, IIZUKA S,et al. , Indian Ocean subtropical dipole simulated using a coupled general circulation mode[J]. J Geophys Res, 2004,109:C09001.doi:10.1029/2003JC001974
[12] 杨明珠,丁一汇. 印度洋海表温度的变化及其对印度夏季季风降水影响的诊断研究[J]. 海洋学报, 2006,284:9-16.
[13] 晏红明,肖子牛,谢应齐. 近50年热带印度洋海温距平场的时空特征分析[J]. 气候与环境研究, 2000,52:180-188.
[14] REASON C J C,Sensitivity of the southern African circulation to dipole sea-surface temperature patterns in the South Indian Ocean[J]. Int J Climatol, 2002, 20: 377-393.
[15] HERMES J C, REASON C J C. Ocean model diagnosis of interannual coevolving SST variability in the South Indian and South Atlantic oceans[J]. J Clim, 2005,18:2864-2882.
[16] CHIODI A M, HARRISON D E. Mechanisms of summertime subtropical southern Indian Ocean sea surface temperature variability: On the importance of humidity anomalies and the meridional advection of water vapor [J]. J Clim, 2007,20:4835-4852.
[17] XIE S P, ANNAMALAIH, SCHOOT F A,et al. Structure and mechanisms of South Indian Ocean climate variability[J]. Climate, 2002,158:864-878.
[18] 刘琳,于卫东. 热带印度洋偶极子事件和副热带印度洋偶极子事件的联系[J]. 海洋科学进展, 2006,243:301-306.
[19] 贾小龙,李崇银. 南印度洋海温偶极子型振荡及其气候影响[J]. 地球物理学报, 2005,486:1238-1249.
[20] 范可,南半球环流异常与长江中下游旱涝的关系[J]. 地球物理学报, 2006, 493: 672-679.
[21] 杨明珠,丁一汇. 中国夏季降水对南印度洋偶极子的响应研究[J]. 大气科学, 2007,314:685-694.
[22] 王鑫. 副热带海温年代际变化及对东亚夏季风的影响[D]. 北京: 中国科学院研究生院, 2007:74-77.
[23] WANG X, LI C Y, ZHOU W. Interdecadal variation of the relationship between Indian rainfall and SSTA modes in the Indian Ocean[J]. Int Jr of Climatology, 2006,26:595-606.
[24] 杨修群,黄士松. 马斯克林高压的强度变化对大气环流影响的数值试验[J]. 气象科学, 1989,92:125-138.
[25] 何金海,李俊,李永平. 澳大利亚冷空气活动影响东亚夏季风的过程数值试验[J]. 气象学报, 1991,49:162-169.
[26] JABAUD JAN A, METAL N, BRUNET C,et al. Interannual variability of the carbon dioxide system in the southern Indian Ocean 20°S-60°S: the impact of a warm anomaly in austral summer 1998[J]. Global Biogeochemical Cycles, 2004,181:GB1042.doi:10.1029/2002GB002017
[27] PALASTANGA V, VAN LEEUWEN P J, SCHOUTEN M W,et al. Flow structure and variability in the subtropical Indian Ocean: Instability of the South Indian Ocean Countercurrent[J]. J Geophys Res, 2007,112:C01001.doi:10.1029/2005JC003395
文章导航

/