Dry deposition of PM_(10) over the Yellow Sea during Asian dust events from 2001 to 2007

作     者：Han Yan Xiaohuan Liu Jianhua Qi Huiwang Gao 

作者机构：Key Laboratory of Marine Environment and Ecology Ocean University of China Ministry of Education of China National Marine Environmental Forecasting Center 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2014年第26卷第1期

页      面：54-64页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：supportedby the National Nature Science Foundation of China(No.40976063) the Sino-Japan Joint Project(No.2010DFA91350) the China Postdoctoral Science Foundation(No.2012M511548) the Fundamental Research Funds for the Central Universities(No.201213008) 

主　　题：Asian dust the Yellow Sea dry deposition fluxes backward trajectory analysis 

摘      要：Dry deposition velocities and fluxes of PM10 during Asian dust events over the Yellow Sea from 2001 to 2007 were investigated using observation data in Qingdao, China and Jeju, Korea. The dry deposition velocities of PM 10 during dust events over the Yellow Sea ranged from 0.19 to 8.17 cm/sec, with an average of 3.38 cm/sec. Dry deposition fluxes of PM10 during dust events over the Yellow Sea were in the range of 68.5-2647.1 mg/（***）, with an average of 545.4 mg/（***）, which is 2-10 times higher than those reported by other studies for both dust and non-dust periods. It was estimated that 2.6× 10^11-48.7 × 10^11 g dust particles deposit to the Yellow Sea during dust events through dry deposition every year. Compared with the results in previous studies, it was found that the dry deposition of PM10 over the Yellow Sea during dust events in the years with high frequency of dust could account for a large or overwhelming fraction of the annual total dry deposition. Backward air mass trajectory analysis showed that dust events influenced Jeju mainly originated from the desert regions located in Mongolia and Inner Mongolia, China. There were 119 backward trajectories influenced both Qingdao and Jeju during 15 dust events from 2001 to 2007, accounting for 61.3% of the total trajectories of 194, indicating that Qingdao and Jeju were usually on the same pathway of dust transport downwind from source areas.