CHEN Jie, LI Zhengqiang, CHANG Wenyuan, ZHANG Ying, WEI Yuanyuan, XIE Yisong, GE Bangyu, ZHANG Chi. Impact Evaluation of Aerosol Variational Assimilation Based on Improved GSI System on WRF-Chem PM2.5 Analysis and Forecast[J]. Journal of Atmospheric and Environmental Optics, 2020, 15(5): 321