| 摘要: |
| 台风和海洋涡旋相互作用，对台风路径和强度的预报和预警具有重要的意义。本文根据2016年第22号超强台风“海马”登陆前后在吕宋海峡附近海域的水文要素现场观测，结合卫星遥感资料，分析了台风过境前后位于吕宋海峡北部的中尺度暖涡内海洋物理要素的分布及其对台风的响应特征。结果表明，处于台风边缘的暖涡并没有因为台风过境产生的强冷抽吸作用而被削弱；反而因台风边缘产生的较强的负风应力旋度异常，导致此区域上层暖海水辐聚下沉、混合层厚度增加，从而增强了该暖涡。台风过境前后，暖涡内热含量的变化也证实了该涡旋的增强。而离台风中心较近的暖涡，则受到强的正风应力旋度产生的冷抽吸作用而被削弱。此次观测研究丰富了台风和涡旋的相互作用物理机制探索，为台风预测预警提供了现场观测数据支持。 |
| 关键词: 吕宋海峡 热带气旋 中尺度暖涡 海洋响应 SST SLA |
| DOI：10.11693/hyhz20170800212 |
| 分类号:P731 |
| 基金项目:国家自然科学基金项目，41376032号；中国科学院战略性先导科技专项（A类）项目，XDA11010205号；青岛海洋科学与技术国家实验室鳌山科技创新计划项目，2016ASKJ12号；国家自然科学基金创新群体项目，41421005号及重点国际合作基金项目，41720104008号。 |
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| THE INFLUENCE OF TYPHOON HAIMA ON WARM EDDIES NEAR THE LUZON STRAIT AND ITS DYNAMICS |
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ZHOU Hui1,2,3, YANG Wen-Long1,3, LIU Heng-Chang1,3, TAN Shu-Wen1,3
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1.Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.Laboratory for Ocean and Climate Dynamics, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China;3.University of Chinese Academy of Sciences, Beijing 100049, China
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| Abstract: |
| Interaction between meso-scale eddy and typhoon is important for the study on typhoon predictability. In this study, we described the responses of warm eddies near the Luzon Strait to typhoon Haima using in-situ hydrographic observations combined with local remote sensing data. Our analysis suggests that the response of warm eddies are different from each other due to their different relative positions with typhoon. A warm eddy, which located in the northeast edge of typhoon Haima, was boosted by a persistent negative wind stress curl induced by the typhoon rather than being depressed. A significant increase of heat content after the typhoon indicates the strengthening of the eddy. However, another warm eddy, which located in the northwest of the typhoon was reduced by a strong positive wind stress curl near center of the typhoon. This study provides observational evidence for understanding typhoon-eddy interaction, and a useful tool for typhoon numerical modeling. |
| Key words: Luzon Strait tropical cyclone meso-scale warm eddy oceanic response SST SLA |
