[1]黄滢,潘一铭,蒋静.秋季台风“海燕”的特点及成因分析[J].气象研究与应用,2019,40(03):13-17.
　Huang Ying,Pan Yiming,Jiang Jing.The Characteristics and Causes of the Autumn Typhoon Haiyan[J].Journal of Meteorological Research and Application,2019,40(03):13-17.
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秋季台风“海燕”的特点及成因分析()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第40卷
期数:
2019年03期
页码:
13-17
栏目:
天气气候
出版日期:
2019-10-21

文章信息/Info

Title:
The Characteristics and Causes of the Autumn Typhoon Haiyan
作者:
黄滢;  潘一铭;  蒋静
广西防城港市气象局, 广西 防城港 538001
Author(s):
Huang Ying;  Pan Yiming;  Jiang Jing
Fangchenggang Meteorological Service, Fangchenggang Guangxi 538001
关键词:
“海燕”台风; 转向; 强度; 暴雨
Keywords:
Haiyan;  autumn typhoon; steering; intensity; typhoon rainstorm
分类号:
DH
摘要:
1330号秋季台风"海燕"具有强度强、维持时间长、路径东折、造成风雨强的特点。利用NCEP再分析资料、CMABST最佳台风路径数据、卫星云图等资料，进行天气学以及动力诊断分析，结果表明：（1）"海燕"强度强，减弱缓慢的主要原因是：弱冷空气从低层不断侵入台风低压的北部，使斜压性加强，气旋性扰动加大；副高、西风槽和"海燕"的位置配置，使得"海燕"北侧的偏西风天气系统和南侧的西南风系统加强；200hPa强辐散提供了有利的高空"抽气"作用。（2）"海燕"路径出现转向东折的主要原因是副高减弱东退，当台风中心越过副高脊线进入西风带系统时，引导气流的转变导致台风转向东北方向移动。卫星云图从对称圆形转为东北-西南走向，预示着台风向东北移动的分量加大。（3）"海燕"影响期间，在广西产生了超过历史同期极值的强降水，其主要原因是东北槽引导适当冷空气的入侵，副高和南支槽的位置配置、广西处于高湿不稳定的环境场也是造成强降水的原因之一。
Abstract:
The autumn typhoon Haiyan (1330) has the characteristics of strong intensity, long maintenance time, turning eastward, and strong wind and rain. This study uses NCEP reanalysis data, CMABST best typhoon path data, satellite cloud maps and other data for weather and dynamic diagnostic analysis. The results showed that (1) the main reason for the strong and slow weakening of Haiyan was that the weak cold air invades the north of tropical cyclone from the lower level, which strengthened baroclinicity and enhanced cyclonic disturbance; the location of subtropical high, westerly trough and Haiyan strengthened the westerly weather system on the north side and the southwesterly wind system on the south side of Haiyan. The 200 hPa strong divergence provided a favorable high-altitude "pumping" effect. (2) The main reason for the eastward turning of the Haiyan track was the weakening of the subtropical high and the eastward retreat. When the typhoon center crossed the ridge line of the subtropical high and entered the westerly belt system, the change of the guiding airflow caused the typhoon to move northeast. The change of satellite cloud image from symmetrical circle to northeast-southwest trend indicated that the component of typhoon moving northeast would increase. (3) During the period of Haiyan, heavy precipitation occurred in Guangxi, which exceeded the extreme value of the same period in history. The main reason was that the northeast trough guided the invasion of appropriate cold air. The location of the subtropical high and the southern branch trough, and the unstable environment in Guangxi were also one of the reasons for heavy precipitation.

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备注/Memo

备注/Memo:
收稿日期:2019-01-10。
基金项目:防城港市科技局课题“相似台风路径及环境形势计算显示系统”
作者简介:黄滢(1981-),女,汉族,广西钦州人,学士,高级工程师,主要从事热带气旋方面的研究。E-mail:huangying100@sina.com
更新日期/Last Update: 1900-01-01