Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 8 4 2008 10.5194/acp-8-787-2008 http://www.atmos-chem-phys.net/8/787/2008/ http://www.atmos-chem-phys.net/8/787/2008/acp-8-787-2008.html http://www.atmos-chem-phys.net/8/787/2008/acp-8-787-2008.pdf 787 798 2008-02-18 Development and evaluation of an operational SDS forecasting system for East Asia: CUACE/Dust C. H. Zhou zhouch@cma.gov.cn S. L. Gong X. Y. Zhang Y. Q. Wang T. Niu H. L. Liu T. L. Zhao Y. Q. Yang Q. Hou Centre for Atmosphere Watch & Services (CAWAS), Chinese Academy of Meteorological Sciences, China Meteorological Administration (CMA), Beijing 100081, China Air Quality Research Division, Science & Technology Branch, Environment Canada, 4905 Dufferin Street, Toronto, Ontario M3H 5T4, Canada CUACE/Dust, an operational mesoscale sand and dust storm (SDS) forecasting system for East Asia, has been developed by online coupling a dust aerosol emission scheme and dust aerosol microphysics onto a regional meteorological model with improved advection and diffusion schemes and a detailed Northeast Asia soil erosion database. With improved initial dust aerosol conditions through a 3-DVar data assimilation system, CUACE/Dust successfully forecasted most of the 31 SDS processes in East Asia. A detailed comparison of the model predictions for the 8–12 March SDS process with surface network observations and lidar measurements revealed a robust forecasting ability of the system. 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