季风流管动力学特征研究

A STUDY ON DYNAMIC CHARACTERISTICS OF “MONSOON CIRCULATION TUBE”

中文摘要:

      在我国夏季风盛行时期,大陆在副高北侧往往有一条东西走向的切变线或准静止锋降水带,沿着降水带上有上升运动,而在切变线或准静止锋雨带南面是东西走向的副高脊线,沿脊线上有下沉运动。在这两者间出现了北面为上升运动,南面为下沉运动的经向环流圈,这个东西方向长达1千多公里的次级垂直环流圈结构就象“东西走向的管子”。

英文摘要:

      There is always a meridionally secondary vertical circulation system over the rain belt of a meiyu front (or a shear line) in Chinese continent during summer season.Authors call the system "monsoon circulation tube". The physical mechanisms of formation and maintenance of the "monsoon circulation tube" are then invesstigated from the relationships between it and diabatic heating and also thermal and dynamic effects of plateau topography. It is also discussed that the spatial relations between the "mosoon circulation tube" and planetary scale systems, such as the westerly, the easterly and the subtropic high, and their effects on the "monsoon circulation tube".