title: Urban particle size distributions during two contrasting dust events originating from Taklimakan and Gobi Deserts.
abstract: The dust origins of the two events were identified using HYSPLIT trajectory model and MODIS and CALIPSO satellite data to understand the particle size distribution during two contrasting dust events originated from Taklimakan and Gobi deserts. The supermicron particles significantly increased during the dust events. The dust event from Gobi desert affected significantly on the particles larger than 2.5 μm, while that from Taklimakan desert impacted obviously on the particles in 1.0-2.5 μm. It is found that the particle size distributions and their modal parameters such as VMD (volume median diameter) have significant difference for varying dust origins. The dust from Taklimakan desert was finer than that from Gobi desert also probably due to other influencing factors such as mixing between dust and urban emissions. Our findings illustrated the capacity of combining in situ, satellite data and trajectory model to characterize large-scale dust plumes with a variety of aerosol parameters.
authors.affiliation: Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Cold & Arid Regions Environmental & Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China.
authors.forename: Suping
authors.initials: S
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Cold & Arid Regions Environmental & Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China. Electronic address: yyu@lzb.ac.cn.
authors.forename: Ye
authors.initials: Y
authors.lastname: Yu
authors.affiliation: MOE Key Laboratory of Western China's Environmental Systems & Research School of Arid Environment and Climate Change, Lanzhou University, Lanzhou, 730000, China.
authors.forename: Dunsheng
authors.initials: D
authors.lastname: Xia
authors.affiliation: Key Laboratory of Desert and Desertification, Cold & Arid Regions Environmental & Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; Dunhuang Gobi and Desert Ecological and Environmental Research Station, Cold & Arid Regions Environmental & Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China.
authors.forename: Daiying
authors.initials: D
authors.lastname: Yin
authors.affiliation: The College of Environmental Science & Engineering, Nankai University, Tianjin 300071, China.
authors.forename: Jianjun
authors.initials: J
authors.lastname: He
authors.affiliation: Weather Modification Office, Qinghai Provincial Meteorological Bureau, Xining 810001, China.
authors.forename: Na
authors.initials: N
authors.lastname: Liu
authors.affiliation: Key Laboratory of Desert and Desertification, Cold & Arid Regions Environmental & Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Li
mesh_terms: D000336:Aerosols / Q000032:analysis; D000393:Air Pollutants / Q000032:analysis*; D002681:China; D002947:Cities; D003889:Desert Climate; D004391:Dust / Q000032:analysis*; D004784:Environmental Monitoring; D010316:Particle Size
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D004391:Dust
keywords: Gobi desert; HYSPLIT; Lanzhou; Remote sensing; Taklimakan desert