CORRECTION OF ASYMMETRIC STRENGTHENING OF QUIKSCAT WIND FIELD AND ASSIMILATION APPLICATION IN TYPHOON SIMULATION

As an approach to the technological problem that the wind data of QuikSCAT scatterometer cannot accurately describe the zone of typhoon-level strong wind speed,some objective factors such as the typhoon moving speed,direction and friction are introduced in this study to construct the asymmetric strengthening of the QuikSCAT wind field. Then by adopting a technology of four-dimensional data assimilation,an experiment that includes both the assimilation and tbrecasting phases is designed to simulate Typhoon Rananim numerically. ]'he results show that with model constraints and adjustment,this technology can incorporate the QuikSCAT wind data to the entire column of the model atmosphere,improve greatly the simulating effects of the whole-column wind,pressure tield and the track as well as the simulated typhoon intensity covered by the forecast phase,and work positively for the forecasting of iandthll locations.

作 者： WANG Liang LU Han-cheng PAN Xiao-bin ZHANG Yun   作者單位： WANG Liang(Mesoscale Meteorology Research Centre,Institute of Meteorology,PLA University of Science and Technology,Nanjing 211101 China)

LU Han-cheng,PAN Xiao-bin,ZHANG Yun(Department of Military Meteorology,PLA University of Science and Technology,Nanjing 211101 China) 

刊 名： 熱帶氣象學報(英文版)  英文刊名： JOURNAL OF TROPICAL METEOROLOGY  年，卷(期)： 2009 15(1)  分類號： P435  關鍵詞： Numerical simulation   typhoon forecast   data assimilation   QuikSCAT wind field,asymmetric bogus model