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本文主要从理论上讨论了台风周围流场特点与热力因子对台风移动的影响。文中指出,当台风东缘最大南风大于(小于)西缘最大北风时,有向北(南)移动的分量;当南缘最大西风小于北缘最大东风(大于并超过一定值)时,有向西(向东)移动分量,移速大小和方向随流场型类不同而异。当两台风接近到某程度时,可相互影响而出现反时钟相对旋转运动。同时指出,台风有朝向加热较强区、层结较不稳定区方向移动的趋势,也有沿变温梯度方向移动的趋势。此外,文中还讨论了副热带高压变动对台风路径的影响。
In this paper, the effects of the characteristics of the flow field around the typhoon and the thermodynamic factors on the movement of the typhoon are mainly discussed theoretically. It is pointed out that when the maximum southerly wind on the eastern margin of the typhoon is greater than (less than) the maximum of the north wind on the western margin, there is a component moving northward (southward); when the maximum westerly wind on the southern margin is smaller than the maximum wind on the northern margin (greater than and above a certain value) There are westward (eastward) moving components, and the magnitude and direction of the velocity varies with the type of flow field. When the two typhoons approach to a certain extent, they can influence each other and appear anti-clockwise relative rotation motion. At the same time, it is pointed out that typhoon tends to move towards stronger area and stratification to the direction of unstable area, and also tends to move along the variable temperature gradient. In addition, the article also discussed the impact of subtropical high pressure on the typhoon path.