• 作者： 林玉郎
• 作者服務機構： 美國北卡羅來納州立大學海洋﹑地球與大氣科學系
• 中文摘要： 在本文第二部份裡，我們將綜覽穩定成層風切氣流對熱源的反應。有些觀測顯示出這類風切氣流和一些中尺度環流有相當密切之關係。在文內，我們將詳述二維含臨界層之風切氣流對固定熱源的數學解，此類數學解將被延伸到三維氣流上，並應用到中尺度對流系統的環流動力上。同時，我們也將討論內重力波之產生及傳播。穩定成層氣流通過對大的或中的中尺度熱源的反應也可應用類似的數學解法。在敘述此類解法時和慣性重力波有關的水平動量之垂直傳播及波動能量也將被詳述，並應用至沿岸旋生的動力問題上。
• 英文摘要： In part II of this series of papers, we review the responses of a stably stratified shear flow to a thermal forcing.Observations indicate that this type of shear flow is closely related to a number of mesoscale circulations. Themathematical method for solving a two-dimensional shear flow with a critical level to a prescribed thermal forcing isdescribed. The mathematical problem is then extended to a three-dimensional flow and applied to the dynamrcs ofmesoscale circulation associated with a mesoscale convective system. Generation and propagation of internal gravitywaves by the heating are discussed. The mathematical problem is then extended to solve a stably stratified flow overa meso-α/β scale heat source. The vertical flux of horizontal momentum and wave energy associated with the thermallyforced inertia-gravity waves are discussed. Both quasi-geostrophic and semi-geostrophic approaches to the problemare also reviewed. The solution is then applied to help understand the dynamics of coastal cyclogenesis.
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