Comparison of PM<sub>2.5</sub> in Seoul, Korea Estimated from the Various Ground-Based and Satellite AOD

Based on multiple linear regression (MLR) models, we estimated the PM<sub>2.5</sub> at Seoul using a number of aerosol optical depth (AOD) values obtained from ground-based and satellite remote sensing observations. To construct the MLR model, we consider various parameters related to th...

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Autores principales:	Sang-Min Kim, Ja-Ho Koo, Hana Lee, Jungbin Mok, Myungje Choi, Sujung Go, Seoyoung Lee, Yeseul Cho, Jaemin Hong, Sora Seo, Junhong Lee, Je-Woo Hong, Jhoon Kim
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	PM<sub>2.5</sub> aerosol optical depth (AOD) multiple linear regression boundary layer height Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/9275883b079244d1bfe0301639353d8c
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spelling	oai:doaj.org-article:9275883b079244d1bfe0301639353d8c2021-11-25T16:37:28ZComparison of PM<sub>2.5</sub> in Seoul, Korea Estimated from the Various Ground-Based and Satellite AOD10.3390/app1122107552076-3417https://doaj.org/article/9275883b079244d1bfe0301639353d8c2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10755https://doaj.org/toc/2076-3417Based on multiple linear regression (MLR) models, we estimated the PM<sub>2.5</sub> at Seoul using a number of aerosol optical depth (AOD) values obtained from ground-based and satellite remote sensing observations. To construct the MLR model, we consider various parameters related to the ambient meteorology and air quality. In general, all AOD values resulted in the high quality of PM<sub>2.5</sub> estimation through the MLR method: mostly correlation coefficients >~0.8. Among various polar-orbit satellite AODs, AOD values from the MODIS measurement contribute to better PM<sub>2.5</sub> estimation. We also found that the quality of estimated PM<sub>2.5</sub> shows some seasonal variation; the estimated PM<sub>2.5</sub> values consistently have the highest correlation with in situ PM<sub>2.5</sub> in autumn, but are not well established in winter, probably due to the difficulty of AOD retrieval in the winter condition. MLR modeling using spectral AOD values from the ground-based measurements revealed that the accuracy of PM<sub>2.5</sub> estimation does not depend on the selected wavelength. Although all AOD values used in this study resulted in a reasonable accuracy range of PM<sub>2.5</sub> estimation, our analyses of the difference in estimated PM<sub>2.5</sub> reveal the importance of utilizing the proper AOD for the best quality of PM<sub>2.5</sub> estimation.Sang-Min KimJa-Ho KooHana LeeJungbin MokMyungje ChoiSujung GoSeoyoung LeeYeseul ChoJaemin HongSora SeoJunhong LeeJe-Woo HongJhoon KimMDPI AGarticlePM<sub>2.5</sub>aerosol optical depth (AOD)multiple linear regressionboundary layer heightTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10755, p 10755 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	PM<sub>2.5</sub> aerosol optical depth (AOD) multiple linear regression boundary layer height Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	PM<sub>2.5</sub> aerosol optical depth (AOD) multiple linear regression boundary layer height Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Sang-Min Kim Ja-Ho Koo Hana Lee Jungbin Mok Myungje Choi Sujung Go Seoyoung Lee Yeseul Cho Jaemin Hong Sora Seo Junhong Lee Je-Woo Hong Jhoon Kim Comparison of PM<sub>2.5</sub> in Seoul, Korea Estimated from the Various Ground-Based and Satellite AOD
description	Based on multiple linear regression (MLR) models, we estimated the PM<sub>2.5</sub> at Seoul using a number of aerosol optical depth (AOD) values obtained from ground-based and satellite remote sensing observations. To construct the MLR model, we consider various parameters related to the ambient meteorology and air quality. In general, all AOD values resulted in the high quality of PM<sub>2.5</sub> estimation through the MLR method: mostly correlation coefficients >~0.8. Among various polar-orbit satellite AODs, AOD values from the MODIS measurement contribute to better PM<sub>2.5</sub> estimation. We also found that the quality of estimated PM<sub>2.5</sub> shows some seasonal variation; the estimated PM<sub>2.5</sub> values consistently have the highest correlation with in situ PM<sub>2.5</sub> in autumn, but are not well established in winter, probably due to the difficulty of AOD retrieval in the winter condition. MLR modeling using spectral AOD values from the ground-based measurements revealed that the accuracy of PM<sub>2.5</sub> estimation does not depend on the selected wavelength. Although all AOD values used in this study resulted in a reasonable accuracy range of PM<sub>2.5</sub> estimation, our analyses of the difference in estimated PM<sub>2.5</sub> reveal the importance of utilizing the proper AOD for the best quality of PM<sub>2.5</sub> estimation.
format	article
author	Sang-Min Kim Ja-Ho Koo Hana Lee Jungbin Mok Myungje Choi Sujung Go Seoyoung Lee Yeseul Cho Jaemin Hong Sora Seo Junhong Lee Je-Woo Hong Jhoon Kim
author_facet	Sang-Min Kim Ja-Ho Koo Hana Lee Jungbin Mok Myungje Choi Sujung Go Seoyoung Lee Yeseul Cho Jaemin Hong Sora Seo Junhong Lee Je-Woo Hong Jhoon Kim
author_sort	Sang-Min Kim
title	Comparison of PM<sub>2.5</sub> in Seoul, Korea Estimated from the Various Ground-Based and Satellite AOD
title_short	Comparison of PM<sub>2.5</sub> in Seoul, Korea Estimated from the Various Ground-Based and Satellite AOD
title_full	Comparison of PM<sub>2.5</sub> in Seoul, Korea Estimated from the Various Ground-Based and Satellite AOD
title_fullStr	Comparison of PM<sub>2.5</sub> in Seoul, Korea Estimated from the Various Ground-Based and Satellite AOD
title_full_unstemmed	Comparison of PM<sub>2.5</sub> in Seoul, Korea Estimated from the Various Ground-Based and Satellite AOD
title_sort	comparison of pm<sub>2.5</sub> in seoul, korea estimated from the various ground-based and satellite aod
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9275883b079244d1bfe0301639353d8c
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Comparison of PM<sub>2.5</sub> in Seoul, Korea Estimated from the Various Ground-Based and Satellite AOD

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