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2020 Vol.55, Issue 5

Research Article

COVID-19(Coronavirus Disease 2019) Outbreaks and Their Relationship with Atmospheric Concentrations of PM10 and PM2.5: A Case Study for Daegu Metropolitan City

코로나바이러스감염증 2019(코로나19) 확산과 대기 중 PM10 및 PM2.5 농도 변화 간의 연관성: 대구광역시 사례 분석

Sunyurp Parka*
박 선엽a*
aProfessor, Department of Geography Education, Pusan National University
a부산대학교 지리교육과 교수
* Corresponding Author
31 October 2020. pp. 453-465
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Abstract

This study determined the impact of the rapid decrease in traffic volume caused by a surge of Coronavirus disease 2019(COVID-19) cases and a temporary lockdown in Daegu Metropolitan City on air quality changes in the early stages of COVID-19 outbreaks, focusing on PM10 and PM2.5 concentrations. The influences of rainfall washout effect and Asian dust were clearly observed, but no close link between the number of Deagu Metro passengers and the concentrations of PM10 and PM2.5 was found. Although the city’s traffic volume steadily increased after the lockdown, PM2.5 levels and PM2.5/PM10 ratio showed a decreasing trend. On the other hand, the declining patterns of PM2.5/PM10 ratio in the city were evident in response to influential events such as Chinese New Year holidays, occurrences of Asian dust, and the World Health Organization's COVID-19 pandemic declaration.

Keywords
COVID-19
PM10
PM2.5
PM2.5/PM10 ratio
washout effect

본 연구는 코로나19 확산 초기에 대구광역시를 중심으로 확진자가 폭증하고 시민의 일상생활이 일시적으로 제한되면서 나타난 도시의 통행량 급감과 대기 질 변화 간의 연관성을 PM10과 PM2.5를 중심으로 파악하였다. 강수의 세정효과와 황사의 영향은 비교적 명확하게 나타났으나 코로나19 확산 기간 중 도로교통량과 PM10 및 PM2.5 농도 간의 뚜렷한 연관성은 나타나지 않았다. 대구광역시의 이동자제령으로 일시적으로 급감한 도시의 통행량은 다시 꾸준히 증가하였으나 PM2.5 농도와 PM2.5/PM10 농도비는 감소 추세를 나타냈다. 반면에 중국 춘절 기간, 황사 발생일, 세계보건기구의 코로나19 세계적 대유행 선언과 같은 주요 시기에 대응하여 PM2.5/PM10 농도비의 감소 경향이 관측되었다.

키워드
코로나19
PM10
PM2.5
PM2.5/PM10 농도비
세정효과
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Information
  • Publisher :The Korean Geographical Society
  • Publisher(Ko) :대한지리학회
  • Journal Title :Journal of the Korean Geographical Society
  • Journal Title(Ko) :대한지리학회지
  • Volume : 55
  • No :5
  • Pages :453-465
  • Received Date : 2020-07-20
  • Revised Date : 2020-10-20
  • Accepted Date : 2020-10-29
  • DOI :https://doi.org/10.22776/kgs.2020.55.5.453
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