[1]苏玉婷,林开平,肖志祥,等.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(01):11-14.
　Su Yuting,Xiao Zhiqiang,Huang Xiaoyan,et al.Numerical test on the influence of Guangxi coastal terrain on the super typhoon “Ramasun”[J].Journal of Meteorological Research and Application,2018,39(01):11-14.
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广西沿海地形对超强台风“威马逊”影响的数值试验()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第39卷
期数:
2018年01期
页码:
11-14
栏目:
天气气候
出版日期:
2018-03-31

文章信息/Info

Title:
Numerical test on the influence of Guangxi coastal terrain on the super typhoon “Ramasun”
作者:
苏玉婷1;  林开平2;  肖志祥2;  黄小燕3
1. 广西师范学院, 南宁 530022;
2. 广西区气象台, 南宁 530022;
3. 广西区气象减灾研究所, 南宁 530022
Author(s):
Su Yuting1;  Xiao Zhiqiang2;  Huang Xiaoyan2;  Lin Kaiping3
1. Guangxi Teachers Education University, Nanning Guangxi 530022;
2. Guangxi Meteorological Observatory, Nanning Guangxi 530022;
3. Guangxi Research Institute of Meteorological Disasters Mitigation, Nanning Guangxi 530022
关键词:
台风"威马逊"; 数值试验; 地形作用; 环流变化
Keywords:
typhoon “Ramasun”; numerical experiment; topographic effect; change of the atmospheric circulation
分类号:
P456.7
摘要:
以在广西沿海登陆的超强台风"威马逊"为研究对象。针对沿海山脉-十万大山，基于区域数值模式WRF3.4.1，开展敏感性数值试验。结果表明，WRF模式能够较好地模拟出台风移动的路径及降水的空间分布特征。十万大山山脉的存在有利于中低层的南北风在山脉周围抬升，而地形抬升作用是导致沿海发生强降水的有利条件之一。移除十万大山地形后，台风中心位置偏西，大气环流的改变使山脉周围水汽辐合减弱，此外，偏南气流由于没有地形的阻挡，因此向北发展，而地形造成的中低层抬升作用也随之消失。水汽辐合的减弱及地形抬升作用的消失共同导致十万大山周围降水减少，最大减幅可达到40mm。
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.

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备注/Memo

备注/Memo:
收稿日期:2017-08-19。
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
作者简介:苏玉婷(1982-),女,广西玉林人,硕士研究生,主要从事应用气象,E-mail:36709855@qq.com
通讯作者:肖志祥,E-mail:xiaozx_gxqxt@163.com
更新日期/Last Update: 1900-01-01