201211号台风“海葵”近海路径和强度突然变化的成因分析-海洋预报

201211号台风“海葵”近海路径和强度突然变化的成因分析

单位：1. 宁波市鄞州区气象局, 浙江宁波 315194;
2. 舟山市气象局, 浙江舟山 316021

分类号：P444

出版年·卷·期（页码）：2018·35·第五期（93-103）

摘要：

运用天气学和动力诊断方法，结合卫星云图，分析了1211号台风“海葵”在浙江近海移向突然变化、强度爆发性增强的原因。结果发现：大陆暖高东移过程中脊线的转变，西太平洋副高西伸加强北抬，并与大陆暖高合并是促使“海葵”移向转变、移速加快的关键因素。“海葵”进入浙江近海时，弱的环境风垂直切变、强烈的低层辐合和高层辐散、东风急流和西南气流水汽输送的加强、低层正涡度的输入是其得以爆发性增强的主要原因。台风爆发性增强时，卫星云图上表现为：台风环流螺旋度迅速加大，结构密实，有完整清晰的台风眼形成，眼区范围缩小，南北两条水汽输送通道建立，水汽输入云带发展强烈，以及台风水平尺度发展到最大等特征。

Using the synoptic analysis and dynamic diagnosis method, combined with the satellite image, the reason of the sudden change in direction and explosive intensification of "Haikui" offshore Zhejiang is analyzed. It is found that the transformation of the continental warm high ridge line during the eastern shift, reinforcing of the western Pacific subtropical high and its merger with continental warm high, are the key factors resulting in the direction change and speed up of "Haikui". When "Haikui" entered Zhejiang offshore sea, the weak environment vertical wind shear, strong low-level convergence and high-level divergence, strengthening of water vapor transmission by easterly jet and southwest airflow, lower level positive vorticity input, were the main reasons for its explosive intensification. During the time of "Haikui" explosive intensification, the satellite images showed that the helicity of typhoon circulation was rapidly increasing, and the typhoon structure was dense and full with a complete clear typhoon eye formation and narrowing of the eye area. The two water vapor transmission channels were established in the north and south, the inputting water vapor cloud bands developed strongly, and the horizontal scale of the typhoon reached its maximum range.

参考文献：

[1] 许映龙. 超强台风鲇鱼路径北翘预报分析[J]. 气象, 2011, 37(7):821-826.
[2] 钱传海, 端义宏, 麻素红, 等. 我国台风业务现状及其关键技术[J]. 气象科技进展, 2012, 2(5):36-43.
[3] 陈联寿, 孟智勇. 我国热带气旋研究十年进展[J]. 大气科学, 2001, 25(3):420-431.
[4] 高拴柱, 吕心艳, 王海平, 等. 热带气旋莫兰蒂(1010)强度的观测研究和增强条件的诊断分析[J]. 气象, 2012, 38(7):834-840.
[5] 端义宏, 余晖, 伍荣生. 热带气旋强度变化研究进展[J]. 气象学报, 2005, 63(5):636-645.
[6] 胡姝, 孙立尹, 李英. 热带气旋结构和强度变化研究进展[J]. 气象与环境学报, 2014, 30(4):91-98.
[7] 于玉斌, 陈联寿, 杨昌贤. 超强台风"桑美"(2006)近海急剧增强特征及机理分析[J]. 大气科学, 2008, 32(2):405-416.
[8] 邓文君, 王蓉, 李茜希, 等. 1208号台风"韦森特"南海近海强度突增特征诊断分析[J]. 海洋预报, 2013, 30(5):44-50.
[9] 刘家峻, 聂新旺, 梅娜, 等. 超强台风"威马逊"强度变化条件的诊断分析[J]. 海洋预报, 2016, 33(6):51-56.
[10] Wong M L M, Chan J C L. Tropical cyclone intensity in vertical wind shear[J]. Journal of the Atmospheric Sciences, 2004, 61(15):1859-1876.
[11] 赵滨. 环境流场垂直切变对热带气旋强度变化影响的初步分析[D]. 南京:南京信息工程大学, 2005.
[12] 李英, 陈联寿, 徐祥德. 水汽输送影响登陆热带气旋维持和降水的数值试验[J]. 大气科学, 2005, 29(1):91-98.
[13] 黄滢, 彭俊龙, 郭亮. 长时间维持和迅速减弱的华南登陆热带气旋对比分析[J]. 海洋预报, 2013, 30(2):68-74.
[14] 袁方超, 邓兆青, 陈德文. 1010号台风"莫兰蒂"近海强度突增诊断分析[J]. 海洋预报, 2012, 29(4):35-41.

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