Aerosol scattering properties in northern China |
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| Institution: | 1. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China;2. Jiaxing Environmental Monitoring Station, Jiaxing 314000, China;1. Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;2. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China;3. Key Laboratory of Regional Climate-Environment for East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;4. Centre for Atmosphere Watch and Services, Meteorological Observation Center of China Meteorological Administration, Beijing 100081, China;1. SRM University, Kattankulathur, Chennai 603203, India;2. Space Physics Laboratory, VSSC, Thiruvananthapuram 695022, India;1. Aerosol & Atmospheric Research Laboratory, Department of Physics, Sri Krishnadevaraya University, Anantapur 515 003, Andhra Pradesh, India;2. Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum 695 022, Kerala, India;1. Earth Sciences Department, Barcelona Supercomputing Center (BSC-ES), c/Jordi Girona 29, 08034 Barcelona, Spain;2. Institute of Environmental Assessment and Water Research (IDAEA-CSIC), c/ Jordi Girona 18-26, 08034 Barcelona, Spain;3. Department of Astronomy and Meteorology, Faculty of Physics, University of Barcelona, c/Martí i Franquès 1, 08028 Barcelona, Spain |
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| Abstract: | The aerosol scattering properties were investigated at two continental sites in northern China in 2004. Aerosol light scattering coefficient (σsp) at 525 nm, PM10, and aerosol mass scattering efficiencies (α) at Dunhuang had a mean value of 165.1±148.8 M m?1, 157.6±270.0 μg m?3, and 2.30±3.41 m2 g?1, respectively, while these values at Dongsheng were, respectively, 180.2±151.9 M m?1, 119.0±112.9 μg m?3, and 1.87±1.41 m2 g?1. There existed a seasonal variability of aerosol scattering properties. In spring, at Dunhuang PM10, σsp, and α were 184.1±211.548 μg m?3, 126.3±89.6 M m?1, and 1.05±0.97 m2 g?1, respectively, and these values at Dongsheng were 146.4±142.1 μg m?3, 183.4±81.7 M m?1, and 1.98±1.52 m2 g?1, respectively. However, in winter at Dunhuang PM10, σsp, and α were 158.1±261.4 μg m?3, 303.3±165.2 M m?1, and 3.17±1.93 m2 g?1, respectively, and these values at Dongsheng were 155.7±170.1 μg m?3, 304.4±158.1 M m?1, and 2.90±1.72 m2 g?1, respectively. σsp and α in winter were higher than that in spring at both the sites, which coincides with the characteristics of dust aerosol and pollution aerosol. Overall, the dominant aerosol types in spring and winter at both sites in northern China are dust aerosol and pollution aerosol, respectively. |
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