| 台风"摩羯"(1814)残涡经渤海突然增强成因分析 |
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| 引用本文： | 朱男男,王彦,苏杭,王雪莲,史得道,王亚男.台风"摩羯"(1814)残涡经渤海突然增强成因分析[J].海洋通报,2020,39(4):464-474. |
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| 作者姓名： | 朱男男 王彦 苏杭 王雪莲 史得道 王亚男 |
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| 作者单位： | 天津海洋中心气象台,天津 300074;天津市海洋气象重点实验室,天津 300074;天津市人工影响天气办公室,天津 300074;天津海洋中心气象台,天津 300074;天津市气象科学研究所,天津 300074 |
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| 基金项目： | 国家自然科学基金 （41675046）；天津科委基金项目 （16JCBJC21500）；中国气象局预报员专项 （CMAYBY2019-008；CMAY-BY2020-006；天津市科技计划项目 （18ZXAQSF00130） |
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| 摘 要： | 利用气象常规资料、自动站资料、FY-4 可见光云图和 NCEP/NCAR 1毅伊1毅再分析资料，对 2018 年 14 号台风“摩羯”残涡经渤海增强前后热力、动力和水汽特征进行分析，结论如下：台风登陆北上后变性为温带气旋，其热力结构呈非对称分布，垂直风切变具有温带气旋特征，台风残涡入海后高空辐散、整层涡度、水汽通量和水汽通量速度等物理因子均明显增强。利用 Petterssen 气旋发展公式探讨入海增强原因，台风残涡入海前，温度平流对台风发展起主要作用，涡度平流对台风发展起抑制作用，台风残涡入海后，温度平流和涡度平流皆有利于台风残涡增强。非绝热加热作用在整个研究时段有利于台风发展，降水释放潜热加热对台风入海增强有正反馈作用，这种作用表现为一种突发性增大的特征。海洋平坦下垫面和适宜的海温是台风残涡入海增强的原因之一。
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| 关 键 词： | 台风残涡 非绝热加热 温度平流 涡度平流 渤海 |
| 收稿时间： | 2019/11/20 0:00:00 |
| 修稿时间： | 2020/3/18 0:00:00 |
Analysis of the intense development on residual vortex of typhoon Yagi (1814) |
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| ZHU Nannan,WANG Yan,SU Hang,WANG Xuelian,SHI Dedao,WANG Yanan.Analysis of the intense development on residual vortex of typhoon Yagi (1814)[J].Marine Science Bulletin,2020,39(4):464-474. |
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| Authors: | ZHU Nannan WANG Yan SU Hang WANG Xuelian SHI Dedao WANG Yanan |
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| Institution: | Tianjin Central Observatory for Oceanic Meteorology, Tianjin 300074, China;Tianjin Key Laboratory for Oceanic Meteorology, Tianjin 300074, China;Tianjin Weather Modification Office,
Tianjin 300074, China;Tianjin Meteorological Observatory, Tianjin 300074, China |
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| Abstract: | Conventional observation data, automatic weather station data, FY-4 satellite cloud images and NCEP/NCAR 1?*1? reanalysis data are used to analyze the features of No.1814 typhoon Yagi. The characteristics of thermal, dynamics and vapor structure are discussed to explain the typhoon Yagi through the Bohai Sea strengthening development. The results show that Yagi was transformed into an extratropical cyclone after landing. Its thermal structure was asymmetrically distributed. The vertical wind shear has the characteristics of extratropical cyclone. After the typhoon residual vortex entering the sea, physical factors such as the high-altitude divergence, the whole layer vorticity, the water vapor flux and water vapor flux divergence were significantly enhanced. Petterssen''s equation is used to explore the reasons for the enhancement of the typhoon. The temperature advection plays a major role in the development of the typhoon before entering the sea. The vorticity
advection inhibits the development of the typhoon. The enhancement of the typhoon into the sea is the result of the interaction of temperature advection and vorticity advection. The non-adiabatic heating effect is beneficial to the development of typhoon through out the period. The latent heat of precipitation has a positive feedback effect on the typhoon strengthening. This effect is characterized by a sudden increase. The flat surface of the ocean and the appropriate sea temperature are one of the reasons for the typhoon strengthening for entering the sea. |
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| Keywords: | residual vortex of typhoon diabatic heating temperature advection vorticity advection Bohai Sea |
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