Long-term Trend of PM2.5 Concentration in Seoul

Min Ju Yeo; Yun Seok Im; Seung Sung Yoo; Eun Mi Jeon; Yong Pyo Kim

doi:10.5572/KOSAE.2019.35.4.438

Long-term Trend of PM_2.5 Concentration in Seoul

Min Ju Yeo, Yun Seok Im, Seung Sung Yoo, Eun Mi Jeon, Yong Pyo Kim

Department of Chemical Engineering & Materials Science

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Public's anxiety on ambient PM_2.5 level is increasing. To check whether the anxiety is related the PM_2.5 concentration, the long-trem trends of (1) the PM_2.5 concentration, high PM_2.5 concentration frequency fraction, frequency of the high concentration occurrence duration time (three indicators), (2) PM_2.5/PM₁₀, (3) PM_2.5/PM₁₀ when PM_2.5≥50 μg/m³ and <10 μg/m³ in Seoul between 2003 and 2018 are studied. Generally, all three indicators have decreased. For example, the annual mean PM_2.5 concentration decreased from 37 μg/m³ in 2003 to 23 μg/m³ in 2018 in Seoul. However, the frequency fraction of PM_2.5 exceeding 75 μg/m³ has increased since 2016. The frequency of the occurrence duration time of PM_2.5≥50 μg/m³ has increased also since 2015. The PM_2.5/PM₁₀ increased while the concetnrations of PMs, because the PM₁₀ concentration decreased more than PM_2.5 concentration in Seoul between 2003 and 2018. The PM_2.5/PM₁₀ when PM_2.5≥50 μg/m³ and <10 μg/m³ are also increased in Seoul between 2003 and 2018 and has incrased rapidly since 2014 when PM_2.5≥50

Original language	English
Pages (from-to)	438-450
Number of pages	13
Journal	Journal of Korean Society for Atmospheric Environment
Volume	35
Issue number	4
DOIs	https://doi.org/10.5572/KOSAE.2019.35.4.438
State	Published - Aug 2019

Bibliographical note

Publisher Copyright:
© 2019, Journal of Korean Society for Atmospheric Environment.All Rights Reserved.

Keywords

Frequency by PM concentration interval
High concentration occurrence duration
PM concentration
Regional difference

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10.5572/KOSAE.2019.35.4.438

Cite this

@article{848b1e9bdf564657ae1be76495da0e73,

title = "Long-term Trend of PM2.5 Concentration in Seoul",

abstract = "Public's anxiety on ambient PM2.5 level is increasing. To check whether the anxiety is related the PM2.5 concentration, the long-trem trends of (1) the PM2.5 concentration, high PM2.5 concentration frequency fraction, frequency of the high concentration occurrence duration time (three indicators), (2) PM2.5/PM10, (3) PM2.5/PM10 when PM2.5≥50 μg/m3 and <10 μg/m3 in Seoul between 2003 and 2018 are studied. Generally, all three indicators have decreased. For example, the annual mean PM2.5 concentration decreased from 37 μg/m3 in 2003 to 23 μg/m3 in 2018 in Seoul. However, the frequency fraction of PM2.5 exceeding 75 μg/m3 has increased since 2016. The frequency of the occurrence duration time of PM2.5≥50 μg/m3 has increased also since 2015. The PM2.5/PM10 increased while the concetnrations of PMs, because the PM10 concentration decreased more than PM2.5 concentration in Seoul between 2003 and 2018. The PM2.5/PM10 when PM2.5≥50 μg/m3 and <10 μg/m3 are also increased in Seoul between 2003 and 2018 and has incrased rapidly since 2014 when PM2.5≥50",

keywords = "Frequency by PM concentration interval, High concentration occurrence duration, PM concentration, Regional difference",

author = "Yeo, {Min Ju} and Im, {Yun Seok} and Yoo, {Seung Sung} and Jeon, {Eun Mi} and Kim, {Yong Pyo}",

year = "2019",

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doi = "10.5572/KOSAE.2019.35.4.438",

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T1 - Long-term Trend of PM2.5 Concentration in Seoul

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AU - Im, Yun Seok

AU - Yoo, Seung Sung

AU - Jeon, Eun Mi

AU - Kim, Yong Pyo

PY - 2019/8

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