CAJ | 학술논문

以 2005 年严重影响我国的登陆台风 Haitang 为研究对象,在用 MM5 模式成功模拟台风登陆前后路径、强度、降水以及结构特征的基础上,通过地形敏感性试验,分析了地形对台风的影响及其机理.结果表明:台风在经过台湾及其后在福建登陆期间的异常路径是地形诱生低压发生发展的结果;在降水强度上东部沿海特殊地形对台风北侧东南气流的辐合抬升使得暴雨增幅度 1 倍以上;地形对台风强度也有一定影响,约为 4 ～ 5 hPa.通过对有无地形影响时台风结构的比较发现地形影响主要在低层,使得高度场分裂两个中心,低层台风主体受山脉阻挡在位置上落后于高层.分析还发现台风登陆前夕移动方向西侧相当位温向西倾斜也可能与地形有关.
이 2005 년엄중영향아국적등륙태풍 Haitang 위연구대상,재용 MM5 모식성공모의태풍등륙전후로경、강도、강수이급결구특정적기출상,통과지형민감성시험,분석료지형대태풍적영향급기궤리.결과표명:태풍재경과태만급기후재복건등륙기간적이상로경시지형유생저압발생발전적결과;재강수강도상동부연해특수지형대태풍북측동남기류적복합태승사득폭우증폭도 1 배이상;지형대태풍강도야유일정영향,약위 4 ～ 5 hPa.통과대유무지형영향시태풍결구적비교발현지형영향주요재저층,사득고도장분렬량개중심,저층태풍주체수산맥조당재위치상락후우고층.분석환발현태풍등륙전석이동방향서측상당위온향서경사야가능여지형유관.
The landfall process of typhoon Haitang which affected East China seriously was simulated by using the MM5 model and the track, intensity, precipitation and structure of typhoon were successfully reproduced. Then through the sensitive test, the effects of terrain were analyzed. Results show that the irregular track during the period of typhoon passing through Taiwan and later landfalling at Fujian was in relation to the occurring and developing of orthographic impressed depression. The amount of rainfall was enhanced more than one time and the strength of typhoon was weakened 4 to 5 hPa. It is found that the effect of terrain on the structure of typhoon is limited at low level and is backward in space compared with the one at high level. In addition, the phenomenon that the equivalent temperature in the typhoon's moving direction inclines to the west on the eye of landfall may be concerned with the terrain.