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。
By use of the atmospheric symmetric and antisymmetric motion theory, the effects of a tropical dipole-like diabatic heat forcing (antisymmetric about the equator) upon the the formation and maintainance of Cross Equatorial Flow(CEF) have been qualitatively analyzed with a primitive equation model. The results show that the antisymmetric diabatic forcing has influences upon the CEF through inducing and maintaining the antisymmetric 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 longitudinal pressure gradient over the equator would occur.
出处
《气象学报》
CSCD
北大核心
1997年第4期484-491,共8页
Acta Meteorologica Sinica
关键词
越赤道气流
对称运动
反对移运动
热力强迫
气流
Cross equatorial flow
Symmetric motion
Antisymmetric motion
Diabatic forcing。
