Application of Model Constrained Variational Data Assimilation Scheme on WRFVAR

摘要：

　　In variational data assimilation scheme,high frequency oscillations would be induced because of unbalance in the analysis fields while observation data are introduced.The model constrained scheme proposed by Liang et al.is used to minimize the time tendency of model variables,and thus eliminate the high frequency oscillations in the optimized initial conditions.In this study,the model constrained variational data assimilation scheme is implemented in WRF-4Dvar system.The primary experiments show that the model constraints used in WRF-4DVar can eliminate the high frequency oscillations obviously.

关键词： Variational data assimilation Model constraint

作者: Xudong Liang Xiang-Yu Huang Xin Zhang

作者单位: Institute of Urban Meteorology, CMA, Beijing National Center for Atmospheric Research, Boulder, Colorado

会议类型: 国际会议

会议名称: The 9th Conference on Meso-Scale Convective Systems and High-Impact Weather in East Asia(2013年东亚中尺度对流系统和高影响天气会议(ICMCS-IX))

会议地点: 北京

会议语种:英文

页码: 273-276

在线出版日期: 2013-03-27（万方平台首次上网日期，不代表论文的发表时间）