| INFLUENCE OF THE BASIC FLOW IN THE TROPICS ON THE STATIONARY PLANETARY WAVES AT MIDDLE AND HIGH LATITUDES DURING THE NORTHERN HEMISPHERE WINTER |
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| 作者姓名： | Huang Ronghui Yan Bangliang |
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| 作者单位： | Institute of Atmospheric Physics Academia Sinica，Beijing，Institute of Atmospheric Physics，Academia Sinica，Beijing |
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| 摘 要： | The relationship between the quasi-stationary planetary waves forced by topography and heat sourceduring the Northern Hemisphere winter is investigated by means of a quasi-geostrophic,34-level,sphericalcoordinate model with the Rayleigh friction,the Newtonian cooling and the horizontal eddy thermal diffu-sion.The calculated results show that when the basic flow is the westerly in the tropical stratosphere,theamplitude of quasi-stationary planetary wave for zonal wavenumber 2 at middle and high latitudes is largerduring the Northern Hemispheric winter;while when the basic flow is the easterly,it is smaller.This is inagreement with the observed results.The calculated results also show that influence of the basic flow in the tropical troposphere on the quasi-stationary planetary waves is larger than that of the basic flow in the tropical stratosphere on the quasi-stationary planetary waves.
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| 收稿时间： | 1988/8/22 0:00:00 |
INFLUENCE OF THE BASIC FLOW IN THE TROPICS ON THE STATIONARY PLANETARY WAVES AT MIDDLE AND HIGH LATITUDES DURING THE NORTHERN HEMISPHERE WINTER |
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| Huang Ronghui,Yan Bangliang.INFLUENCE OF THE BASIC FLOW IN THE TROPICS ON THE STATIONARY PLANETARY WAVES AT MIDDLE AND HIGH LATITUDES DURING THE NORTHERN HEMISPHERE WINTER[J].Acta Meteorologica Sinica,1989,3(4):437-447. |
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| Authors: | Huang Ronghui and Yan Bangliang |
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| Institution: | Institute of Atmospheric Physics, Academia Sinica, Beijing;Institute of Atmospheric Physics, Academia Sinica, Beijing |
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| Abstract: | The relationship between the quasi-stationary planetary waves forced by topography and heat source during the Northern Hemisphere winter is investigated by means of a quasi-geostrophic,34-level,spherical coordinate model with the Rayleigh friction,the Newtonian cooling and the horizontal eddy thermal diffusion.The calculated results show that when the basic flow is the westerly in the tropical stratosphere,the amplitude of quasi-stationary planetary wave for zonal wavenumber 2 at middle and high latitudes is larger during the Northern Hemispheric winter;while when the basic flow is the easterly,it is smaller.This is in agreement with the observed results.The calculated results also show that influence of the basic flow in the tropical troposphere on the quasistationary planetary waves is larger than that of the basic flow in the tropical stratosphere on the quasistationary planetary waves. |
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