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Eigenvector Spatial Filtering Regression Modeling of Ground PM(2.5) Concentrations Using Remotely Sensed Data

This paper proposes a regression model using the Eigenvector Spatial Filtering (ESF) method to estimate ground PM(2.5) concentrations. Covariates are derived from remotely sensed data including aerosol optical depth, normal differential vegetation index, surface temperature, air pressure, relative h...

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Detalles Bibliográficos
Autores principales: Zhang, Jingyi, Li, Bin, Chen, Yumin, Chen, Meijie, Fang, Tao, Liu, Yongfeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6025436/
https://www.ncbi.nlm.nih.gov/pubmed/29891785
http://dx.doi.org/10.3390/ijerph15061228
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author Zhang, Jingyi
Li, Bin
Chen, Yumin
Chen, Meijie
Fang, Tao
Liu, Yongfeng
author_facet Zhang, Jingyi
Li, Bin
Chen, Yumin
Chen, Meijie
Fang, Tao
Liu, Yongfeng
author_sort Zhang, Jingyi
collection PubMed
description This paper proposes a regression model using the Eigenvector Spatial Filtering (ESF) method to estimate ground PM(2.5) concentrations. Covariates are derived from remotely sensed data including aerosol optical depth, normal differential vegetation index, surface temperature, air pressure, relative humidity, height of planetary boundary layer and digital elevation model. In addition, cultural variables such as factory densities and road densities are also used in the model. With the Yangtze River Delta region as the study area, we constructed ESF-based Regression (ESFR) models at different time scales, using data for the period between December 2015 and November 2016. We found that the ESFR models effectively filtered spatial autocorrelation in the OLS residuals and resulted in increases in the goodness-of-fit metrics as well as reductions in residual standard errors and cross-validation errors, compared to the classic OLS models. The annual ESFR model explained 70% of the variability in PM(2.5) concentrations, 16.7% more than the non-spatial OLS model. With the ESFR models, we performed detail analyses on the spatial and temporal distributions of PM(2.5) concentrations in the study area. The model predictions are lower than ground observations but match the general trend. The experiment shows that ESFR provides a promising approach to PM(2.5) analysis and prediction.
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spelling pubmed-60254362018-07-16 Eigenvector Spatial Filtering Regression Modeling of Ground PM(2.5) Concentrations Using Remotely Sensed Data Zhang, Jingyi Li, Bin Chen, Yumin Chen, Meijie Fang, Tao Liu, Yongfeng Int J Environ Res Public Health Article This paper proposes a regression model using the Eigenvector Spatial Filtering (ESF) method to estimate ground PM(2.5) concentrations. Covariates are derived from remotely sensed data including aerosol optical depth, normal differential vegetation index, surface temperature, air pressure, relative humidity, height of planetary boundary layer and digital elevation model. In addition, cultural variables such as factory densities and road densities are also used in the model. With the Yangtze River Delta region as the study area, we constructed ESF-based Regression (ESFR) models at different time scales, using data for the period between December 2015 and November 2016. We found that the ESFR models effectively filtered spatial autocorrelation in the OLS residuals and resulted in increases in the goodness-of-fit metrics as well as reductions in residual standard errors and cross-validation errors, compared to the classic OLS models. The annual ESFR model explained 70% of the variability in PM(2.5) concentrations, 16.7% more than the non-spatial OLS model. With the ESFR models, we performed detail analyses on the spatial and temporal distributions of PM(2.5) concentrations in the study area. The model predictions are lower than ground observations but match the general trend. The experiment shows that ESFR provides a promising approach to PM(2.5) analysis and prediction. MDPI 2018-06-11 2018-06 /pmc/articles/PMC6025436/ /pubmed/29891785 http://dx.doi.org/10.3390/ijerph15061228 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Jingyi
Li, Bin
Chen, Yumin
Chen, Meijie
Fang, Tao
Liu, Yongfeng
Eigenvector Spatial Filtering Regression Modeling of Ground PM(2.5) Concentrations Using Remotely Sensed Data
title Eigenvector Spatial Filtering Regression Modeling of Ground PM(2.5) Concentrations Using Remotely Sensed Data
title_full Eigenvector Spatial Filtering Regression Modeling of Ground PM(2.5) Concentrations Using Remotely Sensed Data
title_fullStr Eigenvector Spatial Filtering Regression Modeling of Ground PM(2.5) Concentrations Using Remotely Sensed Data
title_full_unstemmed Eigenvector Spatial Filtering Regression Modeling of Ground PM(2.5) Concentrations Using Remotely Sensed Data
title_short Eigenvector Spatial Filtering Regression Modeling of Ground PM(2.5) Concentrations Using Remotely Sensed Data
title_sort eigenvector spatial filtering regression modeling of ground pm(2.5) concentrations using remotely sensed data
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6025436/
https://www.ncbi.nlm.nih.gov/pubmed/29891785
http://dx.doi.org/10.3390/ijerph15061228
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