台风“天鹅”、“巨爵”登陆过程风场结构特征的研究

A STUDY ON WIND STRUCTURE OF TYPHOON GONI AND KOPPU DURING LANDING

通过广东沿海的四部固定风廓线仪和一部移动风廓线仪的观测资料,对2009年两个登陆台风"天鹅"、"巨爵"的边界层风场结构进行分析。结果表明:(1)在两个台风登陆过程中,路径两侧不同的下垫面造成两侧风场结构的明显差异;(2)两个台风登陆过程都出现比较明显的入流和出流,但由于速度和强度不同,入流、出流的位置有明显的差异;(3)两个登陆台风眼区外围混合层的高度均在3 500 m以上。

Using data from five wind profilers set up around the Guangdong coast, we studied on the wind structure of the landing typhoon Goni and Koppu （2009）. It is indicated that, during the landing processes, the wind structure on the path sides had obvious diversity due to the difference in underlying surfaces. There were obvious inflow and outflow whose positions were different because of the different intensities and speeds of the typhoons. Moreover, the heights of the mixed layers outside the typhoon centers were greater than 3 500 meters.