%0 Journal Article
%T Model Analysis of the Anthropogenic Aerosol Effect on Clouds over East Asia
%A GAO Yi
%A ZHANG Mei-Gen
%A LIU Xiao-Hong
%A ZHAO Chun
%A <br>GAO Yi
%A ZHANG Mei-Gen
%A LIU Xiao-Hong
%A ZHAO Chun
%J 大气和海洋科学快报
%D 2012
%I 
%X A coupled meteorology and aerosol/chemistry model WRF-Chem (Weather Research and Forecast model coupled with Chemistry) was used to conduct a pair of simulations with present-day (PD) and preindustrial (PI) emissions over East Asia to examine the aerosol indirect effect on clouds. As a result of an increase in aerosols in January, the cloud droplet number increased by 650 cm-3 over the ocean and East China, 400 cm-3 over Central and Southwest China, and less than 200 cm-3 over North China. The cloud liquid water path (LWP) increased by 40-60 g m-2 over the ocean and Southeast China and 30 g m-2 over Central China; the LWP increased less than 5 g m-2 or decreased by 5 g m-2 over North China. The effective radius (Re) decreased by more than 4 mm over Southwest, Central, and Southeast China and 2 mm over North China. In July, variations in cloud properties were more uniform; the cloud droplet number increased by approximately 250-400 cm-3, the LWP increased by approximately 30-50 g m-2, and Re decreased by approximately 3 mm over most regions of China. In response to cloud property changes from PI to PD, shortwave (SW) cloud radiative forcing strengthened by 30 W m-2 over the ocean and 10 W m-2 over Southeast China, and it weakened slightly by approximately 2-10 W m-2 over Central and Southwest China in January. In July, SW cloud radiative forcing strengthened by 15 W m-2 over Southeast and North China and weakened by 10 W m-2 over Central China. The different responses of SW cloud radiative forcing in different regions was related to cloud feedbacks and natural variability.
%K WRF-Chem
%K aerosol indirect effect
%K cloud properties
%K cloud radiative forcing<br>WRF-Chem
%K aerosol
%K indirect
%K effect
%K cloud
%K properties
%K cloud
%K radiative
%K forcing
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=DFA1C03CBD38122A6831EBC757FD100F&aid=C97B91865839552F46DF55E076700EE8&yid=99E9153A83D4CB11&vid=94C357A881DFC066&iid=CA4FD0336C81A37A&sid=CA4FD0336C81A37A&eid=DF92D298D3FF1E6E&journal_id=1674-2834&journal_name=大气和海洋科学快报&referenced_num=0&reference_num=0