Effect of typhoon on atmospheric particulates in autumn in central Taiwan |
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| Authors: | Guor-Cheng Fang Shin-Jay Lin Shih-Yu Chang Charles-CK Chou |
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| Institution: | 1. Air Toxic and Environmental Analysis, Huangkuang University, Taichung, Taiwan;2. School of Public Health, Chung Shan Medical University, Taichung 402, Taiwan;3. Department of Family and Community Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan;4. Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan;1. Institute of Atmospheric Composition (IAC)/Key Laboratory of Atmospheric Chemistry of China Meteorological Administration (CMA), Chinese Academy of Meteorological Sciences (CAMS), Beijing 100081, China;2. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China;3. State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences (CAS), Beijing 100029, China;4. College of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China;1. Department of Integrative Plant Science, School of Bioresource and Bioscience, Chung-Ang University, Anseong 17546, Republic of Korea;2. Pear Research Institute, National Institute of Horticultural & Herbal Science, Rural Development Administration, Naju 58216, Republic of Korea;1. Key Laboratory of Trace Element Nutrition, MOH, Chinese Center for Disease Control and Prevention, Beijing 100050, China;2. Department of Preventive Medicine, Changzhi Medical College, Changzhi 046000, Shanxi, China;3. National Institute of Metrology, Beijing 100029, China;1. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;2. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;3. Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China;4. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;5. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;6. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;7. Bureau of Science and Technology for Development, Chinese Academy of Sciences, Beijing 100864, China |
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| Abstract: | Previous studies have suggested that the ongoing global climate change will likely increase the intensity and frequency of extreme weather, such as typhoons. Since the beginning of global warming, it has become necessary to understand the influence of typhoons on air quality. Rare data, especially particulate measurements data could be used to establish the relationship between the air pollution and typhoons. One of main limiting factors is that most of the previous chemical analyses of particulates used a relatively long sampling time, which could dilute the temporal impact of particulate characteristics and their sources. This work, depending more time-resolved measurements, focus on the characteristics and sources of high particulate matter levels and the influence of typhoons and the Pacific high system. Depending on the measurements, two pollutant groups were clearly identified in this work. The first pollutant group was the emissions from neighboring riverbeds under the strong circulation of the typhoon in the driest season and characterized as high coarse particle concentrations with high mass fraction of Ca2+. The second pollutant group was characterized as the formation and transport of secondary particles with prevalent ions of NH4+, NO3?, and SO42? and occurred in the sea-land breeze circulation under the influence the Pacific high system. |
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