印度洋dipole事件的年际变化与ENSO事件的联系Correlation Between Interannual Indian Ocean Dipole and ENSO
刘琳,于卫东,刘玉国
摘要(Abstract)：
通过对nino3指数和DMI序列的分析,发现两种物理现象都有4 a左右的主要周期,而且印度洋偶极子事件还存在有2 a左右的振荡周期,而厄尔尼诺事件在2 a时间尺度上周期性不明显;对nino3指数和DMI进行年际时间尺度滤波,结果表明,在年际时间尺度上,两者的相关性比未滤波时有了一定的提高;对年际滤波之后的偶极子事件和ELNINO事件的相关分析可以发现,ELNINO对于印度洋偶极子事件的影响要大于IOD对于太平洋ENSO事件,显示了两者物理现象的影响不对称。
关键词(KeyWords)： ENSO;IOD;EOF;年际变化;极值曲面
基金项目(Foundation): 国家自然科学基金(4176002、4021012);; 国家科技部项目(2001CCB00500、2002CB714001)
作者(Author): 刘琳,于卫东,刘玉国
参考文献(References)：
- [1]Bjerknes J.Atmospheric teleconnections from the equatorial.Pacific[J].Monthly Weather Review,1969,97:163-172.
- [2]Saji,Yamagata.A dipole mode in the tropical Indian Ocean[J].Nature,1999,401:360-363.
- [3]Webster P J,Moore A,Loschnigg J,et al.Coupled ocean-at-mospheredynamics in the Indian Ocean during 1997-98[J].Nature,1999,401(23):356-360.
- [4]蒲书箴,赵进平,于卫东,等,中国大尺度海-气相互作用研究进展[J],海洋科学进展,2004,21(1):107-121.
- [5]巢纪平袁绍宇,热带印度洋和太平洋海气相互作用事件间的联系[J].自然科学进展,2003,13(12):1280-1285.
- [6]Qian Wh,Hu Hr,Deng Y,et al,Signals of interannual andinterdecadal Variability of Air-Sea Interaction in the Basin-Wide Indian Ocean[J].0 Atmosphere-Ocean,2002,40(3):293-311.
- [7]Saji N H,Yamagata T.Structure of SST and surface wind vari-ability during Indian Ocean Dipole Mode years:COADS obser-vations[J].J Climate,2003,16:2735-2751.
- [8]Saji N.H,Yamagata T.Possible impacts of Indian Ocean Di-pole mode events on global climate[J].Clim Res,2003,25:151-169.
- [9]Behera S K,Krishnan R,Yamagata T,Unusual ocean-atmos-phere conditions in the tropical Indian Ocean during 1994[J].Geophys Res,Lett.,1999,26:3001-3004.
- [10]Lizuka,S.,Matsuura T.,Yamagata T.,The Indian oceanSST dipole simulated in a coupled general circulation model[J].Geophys Res.Lett.,2000,27:3369-3372.
- [11]Murtugudde R G,McCreary J P,Busalaochi A J.Oceanicprocesses associated with anomalous events in the Indian O-cean with relevance to 1997-1998[J].J.Geophys.Res.,2000,105:3295-3306.
- [12]Yu Jin-Yi,Lau K M.Contrasting Indian Ocean SST variabilitywith and without ENSO influence:A coupled atmosphere-o-cean GCM study[J],Meteorol Atmos Phys,2004,96,:228-236.
- [13]Yu L,Rienecker.Mechanisms for the Indian Ocean warmingduring the 1997-98 ELnino[J].Geophys.Res.Lett,1999,26(6):735-738.
- [14]Baquero-Bernal,Latif A M,Legutke S.On dipolelike varia-bility of Sea Surface Temperature in the tropical Indian Ocean[J].J Climate,2002,15:1358-1368.
- [15]吴国熊,孟文.赤道印度洋太平洋地区海气系统的齿轮式耦合和ENSO事件[J].大气科学,1998,22:470-480.
- [16]殷永红,史历,倪允琪.近20年来热带印度洋于热带太平洋海气系统相互作用特征的诊断研究[J].大气科学,2001,25(3):355-370.
- [17]李崇银,穆名权,潘静.印度洋海温偶极子和太平洋海温异常[J].科学通报,2001,46:1747-1750.
- [18]琚建华,陈琳铃,李崇银.太平洋-印度洋海温异常模态及其指数定义的初步研究[J].热带气象学报,2004,20(6):617-624.
- [19]巢清尘,巢纪平.热带西太平洋和东印度洋对ENSO发展的影响[J].自然科学进展,2001,11:1293-1300.
- [21]Rao A S,Behera S K,Masumoto Y,etal.Interannual varia-bility in the subsurface tropical Indian Ocean[J].Deep-SeaRes.,2002,49:1549-1572.