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ON OTHER WAVE GUIDE IN STATIONARY PLANETARY WAVE PROPAGATIONS IN WINTER NORTHERN HEMISPHERE
作者姓名:黄荣辉  K.GAMBO
作者单位:Institute of Atmospheric Physics,Academia Sinica. Beijing,Geophysical Institute,Tokyo University,Japan
摘    要:In this paper, the refractive index squared of stationary planetary waves in the isothermalatmosphere is computed theoretically. It has been discovered that there should be the otherwave guide pointing from the lower troposphere in middle and high latitudes toward the uppertroposphere in low latitudes in addition to the polar wave guide in the vertical and lateral pro-pagations of stationary planetary waves in winter. The vertical and lateral propagations of stationary planetary waves responding to an idealiz-ed forcing mechanism, for example, an idealized topography or stationary heat sources overthe Northern Hemisphere have been investigated by means of a quasigeostrophic, steady-state,34-level model with Rayleigh friction, Newtonian cooling effect and the horizontal kinematicthermal diffusivity included in a spherical coordinate system. The computed results have veri-fied that there actually is the other wave guide in the stationary planetary wave propagationsin winter. The vertical distributions of

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