Optical and microphysical properties of severe haze and smoke aerosol measured by integrated remote sensing techniques in Gwangju,Korea |
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| Authors: | Young M Noh Detlef Müller Dong H Shin Hanlim Lee Jin S Jung Kwon H Lee Maureen Cribb Zhanqing Li Young J Kim |
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| Institution: | 1. Advanced Environmental Monitoring Research Center (ADEMRC), Department of Environmental Science & Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-dong, Buk-gu, Gwangju 500 712, Republic of Korea;2. Leibniz Institute for Tropospheric Research (IfT), Germany;3. Earth System Science Interdisciplinary Center (ESSIC), Department of Atmospheric & Oceanic Science, University of Maryland (UMD), College Park, MD 20742, USA;1. School of Earth and Environmental Sciences, Seoul National University, Seoul 151-742, Republic of Korea;2. Department of Bio and Environmental Science, Dongnam Health College, Gyeonggi-do 440-714, Republic of Korea;1. School of Earth and Environmental Sciences, Seoul National University, 599 Gwanak-ro, Seoul 151-747, Republic of Korea;2. Korea Military Academy, Seoul, Republic of Korea;3. Climate Research Division, National Institute of Environmental Research, Incheon, Republic of Korea;1. Korea Institute of Geoscience and Mineral Resources (KIGAM), 124 Gwahang-no. Yuseong, Daejeon 305-350, Republic of Korea;2. Keck/CCAMS Lab, 3327 Croul Hall, University of California, Irvine, CA 92697, USA;1. National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan;2. University of Yamanashi, 4-4-37 Takeda, Kofu 400-8510, Japan |
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| Abstract: | Aerosol optical and microphysical parameters from severe haze events observed in October 2005 at Gwangju, Korea (35.10°N, 126.53°E) were determined from the ground using a multi-wavelength Raman lidar, a sunphotometer, and a real-time carbon particle analyzer and from space using satellite retrievals. Two different aerosol types were identified based on the variability of optical characteristics for different air mass conditions. Retrievals of microphysical properties of the haze from the Raman lidar indicated distinct light-absorbing characteristics for different haze aerosols originating from eastern and northern China (haze) and eastern Siberia (forest-fire smoke). The haze transported from the west showed moderately higher absorbing characteristics (SSA = 0.90 ± 0.03, 532 nm) than from the northern direction (SSA = 0.96 ± 0.02). The organic/elemental carbon (OC/EC) ratio varied between 2.5 ± 0.4 and 4.1 ± 0.7. |
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