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Contrasting Roles of Clouds as a Sink and Source of Aerosols using the WRF-Chem model
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논문 기본 정보

Type
Proceeding
Author
Young-Hee Ryu (Pohang University of Science and Technology (POSTECH)) Seung-Ki Min (Pohang University of Science and Technology (POSTECH))
Journal
Korean Meteorological Society 한국기상학회 학술대회 논문집 2021년 한국기상학회 가을학술대회 초록집
Published
2021.10
Pages
132 - 132 (1page)

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Contrasting Roles of Clouds as a Sink and Source of Aerosols using the WRF-Chem model
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Clouds play two contrasting roles in the fate of aerosols as a sink through wet scavenging and a source as they provide a medium for aqueous-phase secondary aerosol formation. The contrasting contributions of clouds to near-surface particulate matters with diameters less than 2.5 μm (PM<SUB>2.5</SUB>) are quantitatively examined over East Asia using the WRF-Chem model. Overall, the net contribution of wet scavenging to daily-mean PM<SUB>2.5</SUB> is much larger (-6.7 μg m<SUP>-3</SUP> to -27 μg m<SUP>-3</SUP>) than that of cloud chemistry (∼1 μg m<SUP>-3</SUP>). The effects of wet scavenging are found over a large extent of areas even no-rainy areas and last for a long time (∼2 days). The amount of aerosols scavenged by clouds and precipitation varies greatly even with the same amounts of cloud liquid water path (LWP) and/or precipitation; how ... View All

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