中文摘要：

大气化学模式是气溶胶污染分析和预报的重要工具,文章首先介绍了WRF/Chem模式及其气溶胶参数化方案,其中MOSAIC方案是兼顾计算开销和精确性的一种近年来应用较多的方案;然后阐述了Li等开发的面向MOSAIC方案的气溶胶资料同化系统,并将该系统的状态变量由5个扩展到8个,可同化PM2.5观测和对应于MOSAIC方案中8类气溶胶成分的观测;最后应用该同化系统做理想试验以检验其设计的合理性,结果表明该同化系统符合三维变分同化原理。

英文摘要：

Atmospheric chemistry model is an important tool for analysis and forecasting of aerosol pollution.This paper introduces the WRF/Chem model and its aerosol parameterization schemes.MOSAIC scheme is considered both in perspective of computation cost and parameterization accuracy.The application of MOSAIC is more extensive in recent years.An aerosol data assimilation system developed corresponding to MOSAIC was introduced in detail.In this paper,the state variables of the system is extended by five to eight.In this system,both PM2.5observations and other aerosol species observations corresponding to eight MOSAIC species can be assimilated.Finally,an ideal observation was assimilated using the data assimilation system to verify the rationality of it.The results show that the system meets the three-dimensional variational assimilation principle.