热带气象学报2011，Vol.27Issue(2)：230-236,7.DOI:10.3969/j.issn.1004-4965.2011.02.011
多时刻台风Bogus资料同化对台风"天鹅"的影响
IMPACTS OF CYCLE-BOGUS DATA ASSIMILATION ON TYPHOON "GONI"(0907)
摘要
Abstract
Based on GRAPES (Global/Regional Assimilation and Prediction System) 3D-VAR system, a scheme called Cycle-BDA (bogus data assimilation) is designed to assimilate bogus data with information of location and intensity of typhoon every three hours and every hour respectively within six hours. The tangential winds are only assimilated because of the high accuracy and the radial winds are adjusted gradually to be consistent with the tangential winds during the Cycles, while the location of typhoon center is corrected step by step as well. A numerical simulation of typhoon "Goni" shows that the assimilation scheme can correct the typhoon's initial position and improve the circulation of the initial field, and leads to improving the track and rainfall forecast against the once-BDA scheme.关键词
台风数值模拟/台风初始场/多次BDA/路径预报Key words
typhoon numeric simulation/ typhoon initial field/ cycle BDA/ track forecast分类
天文与地球科学引用本文复制引用
林芳妮,万齐林,管兆勇..多时刻台风Bogus资料同化对台风"天鹅"的影响[J].热带气象学报,2011,27(2):230-236,7.基金项目
国家自然科学基金"热带气旋活动对东亚地区夏季季内振荡的影响"(40775058) （40775058）
"灾害天气精细数值预报系统及短期气候集合预测研究"(2006BAC02B) （2006BAC02B）
"珠三角城市群-海岸带复合体致灾雷电动力与物理化学特征及预警技术研究"(GYHY200706014) （GYHY200706014）
广东省自然科学基金研究团队项目华南沿海台风 （）
