CAJ | 학술논문

热带气旋登陆过程中受到浅海区大陆架和海岸地形的影响,其结构将发生突变.本文用MM5模式模拟了0515号台风"卡努"登陆浙江的过程,表明MM5模式能很好地模拟出台风路径及其主要雨带.在结构上,登陆后主要完成了从基本对称的垂直分布到东西非对称分布的转换.在热力场方面,登陆后的相当位温、相对湿度、水汽通量散度都比登陆前更加有利于暴雨的发生,登陆后的东西两侧也演变为不对称的分布,东侧的水汽比西侧更充沛,同时东侧的大气层结更加不稳定.
열대기선등륙과정중수도천해구대륙가화해안지형적영향,기결구장발생돌변.본문용MM5모식모의료0515호태풍"잡노"등륙절강적과정,표명MM5모식능흔호지모의출태풍로경급기주요우대.재결구상,등륙후주요완성료종기본대칭적수직분포도동서비대칭분포적전환.재열력장방면,등륙후적상당위온、상대습도、수기통량산도도비등륙전경가유리우폭우적발생,등륙후적동서량측야연변위불대칭적분포,동측적수기비서측경충패,동시동측적대기층결경가불은정.
It is the shallow continental shelf and coastal areas of terrain that changed the structure of tropical cyclone during its landing process. This paper used MM5 to simulate the process of landing of 0515 Typhoon "Khanun". It showed that MM5 can simulate typhoon's path and main rainstorm belt very well. After landing, the structure changed from the vertical distribution of basic symmetry to asymmetric distribution. As for the thermodynamic field, after landing the potential equivalent temperature, relative humidity and water vapor flux divergence is more beneficial to the occurrence of heavy rain than before. After landing the structure changed to an asymmetric distribution in the east and the west area. In the east water vapor was more abundant and the stratification of the atmosphere was more unstable than in the west.