王向东,廖洞贤. 1997. 热力强迫对越赤道气流产生和维持的作用——定性分析[J]. 气象学报, 55(4):484-491, doi:10.11676/qxxb1997.047
热力强迫对越赤道气流产生和维持的作用——定性分析
ON THE EFFECTS OF HEAT FORCING UPON THE FORMATION AND MAINTENANCE OF THE CROSS EQUATORIAL FLOW——QUALITATIVE ANALYSIS
投稿时间:1996-05-13  修订日期:1996-08-07
DOI:10.11676/qxxb1997.047
中文关键词:  越赤道气流  对称运动  反对称运动  热力强迫
英文关键词:Cross equatorial flow  Symmetric motion  Antisy mmetric motion  Diabatic forcing.
基金项目:
作者单位
王向东 国家气候中心, 北京, 100081 
廖洞贤 南京气象学院, 南京, 210044 
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中文摘要:
      从原始方程出发,应用大气运动的对称反对称性理论,就赤道地区一呈偶极子分布的反对称冷热源对越赤道气流的形成和维持作用进行了定性分析.结果表明,非绝热加热的反对称分布对越赤道气流的影响是通过诱发和维持反对称的气压场分量来实现的.即在热源上空低层形成低压,高层形成高压;在热汇上空形成相反的气压场.这样,在赤道上空高、低层就将形成与相应气压梯度方向一致的越赤道气流.
英文摘要:
      By use of the at mospheric symmetric and antisymmetric motion theory,the effects of atropical dipole-like diabatic heat forcing(antisy mmetric about the equator) upon the the formation and maint ainance of Cross Equatorial Flow(CEF) have been qualitatively analyzed with a primitive equation model.The results show that the antisymm etric diabatic forcing has influences upon the CEF through inducing and maint aining the antisy mmetric pressure field.That is to say,a low level depression and an upper level high would be generated over the heating area,and the opposite pressure systems over the cooling area,and the associated CEF in the direction of the corresponding long itudinal pressure gradient over the equat or would occur.
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