物理学报Issue(14)：1-8,8.DOI:10.7498/aps.63.149201
数字滤波弱约束四维变分同化在台风初始化中的应用（I I）：数字滤波权重选择
Application of digital filter weak constraint four-dimensional variational data assimilation on typho on initialization (I I)：Digital filter weight chosen
摘要
Abstract
In Part I, the digital filter weak constraint four-dimensional variational (4D-Var) data assimilation is implemented with different digital filter weight settings through two typhoon cases. The results show that the influence of the digital filter weight on typhoon track and intensity prediction is large, and how to choose an appropriate digital filter weight is important. In this paper, seven different initial time typhoon cases in 2010 are selected to analyze the effects of different digital filter weight settings on typhoon track and intensity prediction. Based on the track and intensity prediction information of the seven cases, and the three-hour pressure tendency information for the whole domain and the area with 800 km radius from the typhoon center, a method of choosing digital filter weight is proposed for typhoon initialization with bogus data assimilation. Also, the ordinary digital filter weight setting is proposed, which is 1000 and obviously different from the operational and storm cases weight setting.关键词
数字滤波弱约束四维变分同化/数字滤波权重选择/台风初始化Key words
digital filter weak constraint four dimensional variational data assimilation/digital filter weight chosen/typhoon initialization引用本文复制引用
钟剑,费建芳,董钢,程小平,孙一妹..数字滤波弱约束四维变分同化在台风初始化中的应用（I I）：数字滤波权重选择[J].物理学报,2014,(14):1-8,8.基金项目
国家自然科学基金(批准号:41105065,41230421,41005029,41175025)和国家公益性行业专项(批准号：GYHY201106004)资助的课题 （批准号:41105065,41230421,41005029,41175025）
