厄尔尼诺形成机制的数值研究-海洋预报

厄尔尼诺形成机制的数值研究

作者：李东辉 ¹ 张瑰 ² 谭言科 ³

单位：1. 南京军区气象水文中心, 南京, 210016;
2. 解放军理工大学理学院, 南京, 211101;
3. 解放军

关键词：厄尔尼诺海洋环流模式海温距平

分类号：P731

出版年·卷·期（页码）：2006·2006·第二期（31-38）

摘要：

在中国科学院大气物理研究所研制的第三代大洋环流模式(L30T63OGCM)的基础上,提高模式的水平分辨率,建立了纬向和经向水平分辨率分别为1.5?#21644;1?#30340;较高分辨率的全球大洋环流模式,分析该模式1959年1月~1998年12月的积分结果,以此研究厄尔尼诺事件形成和演变的物理机制。对数值模拟结果的分析表明:西风爆发可引起表层洋流异常,异常的平流作用是海表温度距平形成厄尔尼诺模态的主要原因;表层洋流异常及由其引起的海表高度异常可导致次表层海水垂直输送的异常,异常的垂直输送作用是形成次表层海温距平厄尔尼诺模态的主要原因。

Based on the L30T63 oceanic general circulation model developed by Instituteof Atmospheric Physics,Chinese Academy of Sciences,a higher horizontal resolution oceanicgeneral circulation model,with homogeneous 1.5白1癶orizontal resolution,has been establishedby enhancing the horizontal resolution of the L30T63.The forming and evolvement mechanismof El Ni駉 have been analyzed by simulated results(from January 1959 to December 1998)of the model.It is shown from the simulated results that the surface anomalous oceaniccirculation is caused by the eruption of the westerly wind,as far as the forming of the El Ni駉 mode of the sea surface temperature is concerned,the anomalous advection effectis the primary dynamical reason.The anomalous subsurface vertical and horizontal circulationresulted from the anomalous surface ocean current and the anomalous sea surface elevationis the primary reason for the forming of the El Ni駉 mode of the subsurface sea temperature.

参考文献：

[1] Bjerknes J,A possible response of the atmospheric Hadley circulation to equatorial anomalyes of ocean temperature.Tellus,1966,18:820～829.

[2] Bjerknes J,Atmospheric teleconnections from the equatoriall Pacific.Mon Wea Rev,1969,97:163～ 172.

[3] Wyrtki K,El Ni(n)o-the dynamic resjponse of the equatoriall Pacific Ocean to atmospheric forcing.J Phys Oceanogr,1975,5:572～584.

[4] McCreary J P,A model of tropical ocean-atmosphere interaction.Mon Wea Rev,1983,111:370～387.

[5] McCreary J P,Anderson D L T,A simple model of El Ni(n)o and the Southern Osillation.Mon Wea Rev,1984,112:934～946.

[6] Anderson D L T,McCreary J P,Slowly propagating disturbances in a coupled ocean-atmosphere model.J Atmos Sci,1985,42:615～628.

[7] 于慧芩,蒲书箴.1986/1987厄尔尼诺期间的西风强化和海气相互作用过程分析[J].大气科学,1992,16:427～435.

[8] 傅云飞,黄荣辉.热带西太平洋西风异常对ENSO事件发生的作用[J].大气科学,1996,20(6):641～653.

[9] 傅云飞,黄荣辉.东亚西风异常活动对热带西太平洋西风爆发及ENSO发生的作用[J].大气科学,1997,21:487～492.

[10] 黄荣辉,张人禾,严邦良.热带西太平洋纬向风对ENSO循环的动力作用[J].中国科学(D辑),2001,31(8):697～704.

[11] 刘海龙,张学洪,等.西风爆发时赤道西太平洋热量平衡的诊断分析[J].大气科学,2001,25(3):303～315.

[12] 穆明权,李崇银,西太平洋暖池次表层海温异常与ENSO循环的相互作用[J] ,大气科学,2000,24(4):447～458.

[13] Cronin M F,Mcphaden M J,The upper ocean heat balance in the western equatorial Pacific warm pool during September-December 1992.J Geophys Res,1997,102:8533～8554.

[14] Zhang R H,Rothstein L M,Busalacchi A J,Interannual and decadal variability of the subsurface thermal structure in the Pacific Ocean:1961-90.Climate Dynamic,1999,15:703～717.

[15] Wang Bin,Wu Ren-guang,Roger Lukas.Roles of western north Pacific wind variation in thermocline adjustment and ENSO phase transition.Journal of the Meteoro Soci of Japan,1999,77 (1):1～16.

[16] 李崇银,穆明权.厄尔尼诺的发生与赤道西太平洋暖池次表层海温异常[J].大气科学,1999,23(5):513～521.

[17] Jin Xiangze,Zhang xuehong,and Zhou Tianjun.Fundamental Framework and Experiments of the Third Generation of IAP/LASG World Ocean General Circulation Model.Adv Atmos Sci,1999,16 (2):197～215.

[18] 刘海龙.高分辨率海洋环流模式和热带太平洋上层环流的模拟研究[D].中国科学院大气物理研究所博士学位论文,2002.

服务与反馈：

【文章下载】【发表评论】【查看评论】【加入收藏】