• 作者： 廖學鎰；江火明
• 作者服務機構： 國立中央大學地球物理研究所
• 中文摘要： 本文利用四層準地轉模式，考慮地形對大氣之抬?與阻檔作用，且利用熱力方程式，假設大氣之水平移流與垂直移流之差數，?外界之加熱效應，分別計算斜壓，地形及加熱效應之垂直速度，進而解答渦旋方程，以討論冬季東亞地區地形及熱 源對平均環流的動力作用。 由於斜壓效應，下層槽線加深且東進，而上層槽線?塞且西移；地形的影響，使得原有的高空槽向中國大陸東岸之固定 槽位置移動，以趨向平均大氣環流的形勢。在冬季，除了喜馬拉雅山南麓之外，整個東亞地區?一廣大之熱源，下層的加熱 作用，使得等壓面上^高度降低，而在上層的加熱場與高度變化趨勢場?具有相同之相位。
• 英文摘要： By making use of a 4-layer quasi-geostrophic model, the numerical solution of the vorticity and the ω-equations were examined. In this model, the effects of topography and diabatic heating are taken into account. Due to the baroclinic effect, the lower-trough is being deepened and moving eastward but the upper one is being filled and moving westward. Due to the influence of topography, the trough will be deepened and will move towards the position of the anchor trough which is generally located over the east coast of the continent. Of considerable significance is the existence of a broad zone of heating over the east coast of the continent and North Pacific Ocean. The heating field acts to oppose the geopotential height tendency at the lower level, but at the upper level the heating field and the geopotential height tendency are in phase.
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