气象研究与应用2018，Vol.39Issue(1)：11-14,4.
广西沿海地形对超强台风"威马逊"影响的数值试验
Numerical test on the influence of Guangxi coastal terrain on the super typhoon "Ramasun"
摘要
Abstract
Taking the extremely strong typhoon "Ramasun" which landed on Guangxi coastal area as a research object, the paper aimed at the coastal mountains——Cent Mille Monts and carried out the sensitive numerical experiment based on the regional numerical model WRF 3.4.1. The results showed that the WRF model simulated the path of typhoon movement and the spatial distribution characteristics of precipitation well. The existence of the Cent Mille Monts was beneficial to the uplift of the north and south winds at middle-low layers around the mountains, furthermore, the orographic lifting was one of the favorable conditions for causing severe precipitation at the coastal area. After moving the Cent Mille Monts in the simulation, the center of typhoon was located at the west side, and the change of the atmospheric circulation made the convergence of water vapor around the mountains weaker. Except that,because there was no topographic barrier to impede the westward air current, it developed towards north and the uplift of middle -low layers caused by the terrain disappeared. The decrease of water vapor convergence and the disappearance of topographic uplifting resulted in the decrease of precipitation around Cent Mille Monts and the maximum decrease could be up to 40mm.关键词
台风"威马逊"/数值试验/地形作用/环流变化Key words
typhoon "Ramasun"/numerical experiment/topographic effect/change of the atmospheric circulation分类
天文与地球科学引用本文复制引用
苏玉婷,林开平,肖志祥,黄小燕..广西沿海地形对超强台风"威马逊"影响的数值试验[J].气象研究与应用,2018,39(1):11-14,4.基金项目
国家自然科学基金项目:41575051,41765002,41465003 （）
广西自然科学基金重点项目:2017GXNSFDA198030 （）
Supported by: National Natural Science Foundation of China (Grant No.41575051,41765002 and 41465003),Guangxi Natural Science Foundation of key project (Grant No.2017GXNSFDA198030) （Grant No.41575051,41765002 and 41465003）
