Particle and Aerosol Research
Vol. 15, No. 2, June 2019, Pages 45-56
|
ISSN : 1738-8716 (Print)
ISSN : 2287-8130 (Online)
|
Trends of the PM2.5 concentrations and high PM2.5 concentration
cases by region in Korea
Minju Yeo1), and Yongpyo Kim2)
1)Department of Environmental Science and Engineering, Ewha Womans University
2)Department of Chemical Engineering and Materials Science, Ewha Womans University
*Corresponding author.
Tel.: +82-2-327-2832, E-mail: yong@ewha.ac.kr
Received 21 June 2019, Revised 25 June 2019, Accepted 25 June 2019, Available online 30 June 2019
htp:/dx.doi.org/10.1629/jpar.2019.15.2.045
Abstracts
The public\'s concern on ambient PM2.5 has been increasing in Korea. We have estimated (1) the annual and monthly mean PM2.5 concentrations, (2) the frequency by the PM2.5 concentration interval, and (3) the high concentration occurrence duration time between 2015 and 2018 at 16 administration regions. We found that there have been differences in all three above parameters¡¯ trends among the studied 16 regions in Korea. Still, Jeonbuk showed the highest rank in all three parameters¡¯ trends. In Jeonbuk, the average PM2.5 concentration and the sum of the frequency fraction when the PM2.5 concentration being over 75 §¶/§© between 2016 and 2018 was 28.4 §¶/§© and 9.0%, respectively. And the days when the PM2.5 concentration is over 50 §¶/§© between 2015 and 2018 were 149. Chungbuk was the only region with the increasing trend of PM2.5 concentration between 2016 and 2018. And in Seoul and Gyeonggi, the average PM2.5 concentrations decreased whereas the high concentration frequency fraction increased between 2016 and 2018. Also, it is found that there have been differences in the trends of the frequency by the PM2.5 concentration interval and the high concentration occurrence duration time between PM10 and PM2.5.5
Keywords
PM2.5 concentration, Frequency by PM2.5 concentration interval, High concentration ocurrence duration, Regional difference.
File
01. ³í¹® 15±Ç 2È£ (¿©¹ÎÁÖ) 2019000011- ÆíÁý ÃÖÁ¾.pdf
Download