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http://dx.doi.org/10.5322/JESI.2021.30.6.475

Characteristics of Fine Particles during Cold Front Passage in Busan, on March 19, 2020  

Jeon, Byung-Il (Department of Chemical Engineering, Silla University)
Publication Information
Journal of Environmental Science International / v.30, no.6, 2021 , pp. 475-485 More about this Journal
Abstract
This research investigated the characteristics of fine particles during cold front passage in Busan, on March 19, 2020. The cold front speed was 17.4 m/s (about 63k km/hr), moving from the northwest to the southeast, and with a width of about 64 km. The backward trajectory analysis showed that a southern sea air parcel flowed into Busan before the cold front passage, carrying continental materials from China transported into Busan after cold front passage. The PM10 concentration in Busan showed a rapid increase after passing through the cold front, with PM2.5 showing a high concentration during cold front passage. The PM2.5/PM10 ratio was 0.10 - 0.30. When the cold front passed, SO42-, NO3-, Ca2+, NH4+, Na+, and K+ in PM2.5 showed a rapid increase, with SO42- showing the most significant increase. These results indicated that understanding the characteristics of fine particles during cold front passage in Busan could provide insight into establishing a strategy to control urban air quality.
Keywords
Cold front; Backward trajectory; $PM_{10}$; Ionic element;
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