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| THE MESOSCALE WAVES AND THE FORMATION OF POLYGONAL EYE WALL IN TYPHOONS | |
| 作者姓名： | 康建伟 陆汉城 钟科 张少波 韩文博 |
| 作者单位： | Meteorological Center of General Staff Headquarters，Meteorological Institute PLA University of Science and Technology，Meteorological Center of General Staff Headquarters，Meteorological Institute，PLA University of Science and Technology，Meteorological Center of Air Force in Nanjing Military Area，Beijing 100081 China，Nanjing 211101 China，Beijing 100081 China，Nanjing 211101 China，Nanjing 210001 China |
| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
| 摘 要： | Mesoscale waves in typhoons were diagnosed by using a simulated typhoon data in this paper. Through analyzing the structure of the waves in typhoons, we found that the waves possess the mixed features of gravity inertial waves and vortex Rossby waves. On the one hand, positive geopotential height perturbation is corresponding to negative vorticity perturbation and anticyclonic circulation. At the same time, negative geopotential height perturbation is corresponding to positive vorticity perturbation and cyclonic circulation. The maximum perturbation occurs near the radius of the maximum wind in the typhoon. On the other hand, the mesoscale waves possess the features of strong convergence and divergence and ageostrophic wind. Finally, the authors presented a concept model to explain a linkage mechanism between the mesoscale waves and the formation of polygonal eye wall in the typhoon. |
| 关 键 词： | typhoon gravity–inertial-waves vortex-Rossby-waves |
THE MESOSCALE WAVES AND THE FORMATION OF POLYGONAL EYE WALL IN TYPHOONS |
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| KANG Jian-wei,LU Han-cheng,ZHONG Ke,ZHANG Shao-bo,HAN Wen-bo.THE MESOSCALE WAVES AND THE FORMATION OF POLYGONAL EYE WALL IN TYPHOONS[J].Journal of Tropical Meteorology,2007,13(1):89-92. | |
| Authors: | KANG Jian-wei LU Han-cheng ZHONG Ke ZHANG Shao-bo HAN Wen-bo |
| Affiliation: | 1. Meteorological Center of General Staff Headquarters, Beijing 100081 China 2. Meteorological Institute, PLA University of Science and Technology, Nanjing 211101 China 3. Meteorological Center of Air Force in Nanjing Military Area, Nanjing 210001 China |
| Abstract: | Mesoscale waves in typhoons were diagnosed by using a simulated typhoon data in this paper. Through analyzing the structure of the waves in typhoons, we found that the waves possess the mixed features of gravity inertial waves and vortex Rossby waves. On the one hand, positive geopotential height perturbation is corresponding to negative vorticity perturbation and anticyclonic circulation. At the same time, negative geopotential height perturbation is corresponding to positive vorticity perturbation and cyclonic circulation. The maximum perturbation occurs near the radius of the maximum wind in the typhoon. On the other hand, the mesoscale waves possess the features of strong convergence and divergence and ageostrophic wind. Finally, the authors presented a concept model to explain a linkage mechanism between the mesoscale waves and the formation of polygonal eye wall in the typhoon. |
| Keywords: | typhoon gravity-inertial-waves vortex-Rossby-waves |
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