Satellite and ground observations for large-scale air pollution transport in the Yellow Sea region |
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| Authors: | Hak-Sung Kim Yong-Seung Chung |
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| Institution: | (1) Korea Centre for Atmospheric Environment Research, 304 Koonghyon, Cheongwon, Choongbuk, 363-891, South Korea |
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| Abstract: | Large-scale air pollution transport (LSAPT) in the Yellow Sea region and their inflow onto the Korean Peninsula were observed
through satellite images and ground measurements. LSAPT includes regional continental air-masses saturated with pollutants
originating from China and subsequently landing on or passing through the Korean Peninsula. It is also possible to identify
the distribution and transport patterns of LSAPT over the Yellow Sea. The ground concentrations for PM10, PM2.5 and CO measured
at Cheongwon, located in the centre of south Korea, were compared with NOAA satellite images. Notably, the episodes observed
of the LSAPT show a PM2.5 to PM10 ratio of 74% of the daily maximum concentrations. However, cases of duststorms were clearly
distinguished by much higher PM10 concentrations and a ratio of 30% of PM2.5 to PM10 for daily maximum concentrations. For
the episode on January 27, 2006, the inflow of a regionally polluted continental air-mass into the central and southwestern
regions of the Korean Peninsula was observed sequentially at various ground observatories as well as by satellite. The north
airflow dissipated the clouds over Mt. Halla on Jeju Island and further downwind, reducing air pollution and creating a von
Kármán vortex. |
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| Keywords: | Large-scale air pollution transport (LSAPT) Satellite observations Ground observations PM10 PM2 5 Von Kármán vortex |
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