首页 | 本学科首页   官方微博 | 高级检索  
     检索      

ENSO循环之中的海气相互响应——对次表层海温和大气旋度的资料分析
引用本文:刘琳,于卫东.ENSO循环之中的海气相互响应——对次表层海温和大气旋度的资料分析[J].地球物理学报,2006,49(1):45-51.
作者姓名:刘琳  于卫东
作者单位:1.中国海洋大学气象系, 青岛 266003 2 国家海洋局第一海洋研究所海洋环境科学和数值模拟实验室, 青岛 266061
基金项目:国家自然科学基金项目(4176002,40231012)和国家科技部项目(2001CCB00500,2002CB714001)资助.
摘    要:利用美国国家环境预测中心(NCEP)和联合环境数据分析中心(JEDAC)资料,分别定义了表征海洋和大气变异的风场涡度指数和温度场指数,对热带太平洋海域的极值曲面上的温度距平、850 hPa风应力旋度进行了分析.结果显示,大气对海洋热力强迫的响应主要是Gill型,而大气又可以通过风应力旋度造成的Ekman抽吸作用来影响海洋,这种海气相互作用影响着ENSO循环的发展.通过简单的统计分析,解释了二者在ENSO循环之中所起的作用,并从资料中验证了El Nio事件具有3~4年的循环周期.这在一定程度上支持了ENSO的时滞振荡子和自然振荡子理论.

关 键 词:ENSO  自然振荡子  海气相互作用  海温最大距平曲面  
文章编号:0001-5733(2006)01-0045-07
收稿时间:2004-08-31
修稿时间:2004-08-312005-07-13

Analysis of the characteristic time scale during ENSO
LIU Lin,YU Wei-Dong.Analysis of the characteristic time scale during ENSO[J].Chinese Journal of Geophysics,2006,49(1):45-51.
Authors:LIU Lin  YU Wei-Dong
Institution:1.Department of Meteorology, Ocean University of China, Qingdao 266003, China 2 Lab. Marine Science and Numerical Modeling, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Abstract:We define the indexes of atmosphere wind stress vorticity and the sea temperature by means of the data from National Centers for Environmental Prediction(NCEP)and Joint Environmental Data Analysis Center(JEDAC)to analyze both the temperature anomaly on the maximum anomaly curve at the tropical Pacific and the wind stress vorticity at 850 hPa. The result shows that the atmosphere response to the ocean is mainly the Gill type mode and simultaneously, the ocean is affected by Ekman pumping from the wind stress vorticity of the low level atmosphere. The statistic analysis also explains their action during the ENSO cycle as well as the period of the El Nio event, which supports the theory of natural oscillator with the use of initial data to some extent.
Keywords:ENSO  Natural oscillator  Air-sea interaction  Maximum anomaly curve
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《地球物理学报》浏览原始摘要信息
点击此处可从《地球物理学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号