海洋预报2011，Vol.28Issue(2)：18-22,5.
0908号台风"莫拉克"异常路径的诊断分析与数值模拟
Diagnoses and numerical simulation of the unusual track of Morakot (0908)
摘要
Abstract
Using the NECP reanalysis data, the unusual track of "Morakot" is investigated through diagnostic analysis and numerical simulation in this paper. Results show that:(1)The movement of "Morakot" is mainly affected by the eastern steering flow of the subtropical high. The tropical depression "Etau" and the mainland high weaken the steering effect of the environmental flow on "Morakot". The weakened environmental flow is the major reason for the slow movement of "Morakot" before landing on Taiwan. The eastward retreating and weakening of the subtropical high,the southwestern current,as well as the binary interaction,play important roles when "Morakot" is turning to north.(2) The track of "Morakot" can be successfully simulated by the control test of numerical simulation,but the intensity of typhoon; The deviation of two terrain sensitivity tests relative to the control test of numerical simulation is small. The influence of terrain of Taiwan Island on the direction and speed of typhoon, moving is not significant.关键词
台风/异常路径/诊断分析/数值模拟Key words
typhoon/ unusual track/diagnostic analysis/ numerical simulation分类
天文与地球科学引用本文复制引用
李波,费建芳,黄小刚,宋平,宋辉..0908号台风"莫拉克"异常路径的诊断分析与数值模拟[J].海洋预报,2011,28(2):18-22,5.基金项目
国家重点基础研究发展规划项目(973)课题(2009CB421502) （973）
