Cargando…
Implications of Mitigating Ozone and Fine Particulate Matter Pollution in the Guangdong‐Hong Kong‐Macau Greater Bay Area of China Using a Regional‐To‐Local Coupling Model
Ultrahigh‐resolution air quality models that resolve sharp gradients of pollutant concentrations benefit the assessment of human health impacts. Mitigating fine particulate matter (PM(2.5)) concentrations over the past decade has triggered ozone (O(3)) deterioration in China. Effective control of bo...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8914409/ https://www.ncbi.nlm.nih.gov/pubmed/35795693 http://dx.doi.org/10.1029/2021GH000506 |
_version_ | 1784667700964884480 |
---|---|
author | Zhang, Xuguo Stocker, Jenny Johnson, Kate Fung, Yik Him Yao, Teng Hood, Christina Carruthers, David Fung, Jimmy C. H. |
author_facet | Zhang, Xuguo Stocker, Jenny Johnson, Kate Fung, Yik Him Yao, Teng Hood, Christina Carruthers, David Fung, Jimmy C. H. |
author_sort | Zhang, Xuguo |
collection | PubMed |
description | Ultrahigh‐resolution air quality models that resolve sharp gradients of pollutant concentrations benefit the assessment of human health impacts. Mitigating fine particulate matter (PM(2.5)) concentrations over the past decade has triggered ozone (O(3)) deterioration in China. Effective control of both pollutants remains poorly understood from an ultrahigh‐resolution perspective. We propose a regional‐to‐local model suitable for quantitatively mitigating pollution pathways at various resolutions. Sensitivity scenarios for controlling nitrogen oxide (NO(x)) and volatile organic compound (VOC) emissions are explored, focusing on traffic and industrial sectors. The results show that concurrent controls on both sectors lead to reductions of 17%, 5%, and 47% in NO(x), PM(2.5), and VOC emissions, respectively. The reduced traffic scenario leads to reduced NO(2) and PM(2.5) but increased O(3) concentrations in urban areas. Guangzhou is located in a VOC‐limited O(3) formation regime, and traffic is a key factor in controlling NO(x) and O(3). The reduced industrial VOC scenario leads to reduced O(3) concentrations throughout the mitigation domain. The maximum decrease in median hourly NO(2) is >11 μg/m³, and the maximum increase in the median daily maximum 8‐hr rolling O(3) is >10 μg/m³ for the reduced traffic scenario. When controls on both sectors are applied, the O(3) increase reduces to <7 μg/m³. The daily averaged PM(2.5) decreases by <2 μg/m³ for the reduced traffic scenario and varies little for the reduced industrial VOC scenario. An O(3) episode analysis of the dual‐control scenario leads to O(3) decreases of up to 15 μg/m³ (8‐hr metric) and 25 μg/m³ (1‐hr metric) in rural areas. |
format | Online Article Text |
id | pubmed-8914409 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-89144092022-07-05 Implications of Mitigating Ozone and Fine Particulate Matter Pollution in the Guangdong‐Hong Kong‐Macau Greater Bay Area of China Using a Regional‐To‐Local Coupling Model Zhang, Xuguo Stocker, Jenny Johnson, Kate Fung, Yik Him Yao, Teng Hood, Christina Carruthers, David Fung, Jimmy C. H. Geohealth Research Article Ultrahigh‐resolution air quality models that resolve sharp gradients of pollutant concentrations benefit the assessment of human health impacts. Mitigating fine particulate matter (PM(2.5)) concentrations over the past decade has triggered ozone (O(3)) deterioration in China. Effective control of both pollutants remains poorly understood from an ultrahigh‐resolution perspective. We propose a regional‐to‐local model suitable for quantitatively mitigating pollution pathways at various resolutions. Sensitivity scenarios for controlling nitrogen oxide (NO(x)) and volatile organic compound (VOC) emissions are explored, focusing on traffic and industrial sectors. The results show that concurrent controls on both sectors lead to reductions of 17%, 5%, and 47% in NO(x), PM(2.5), and VOC emissions, respectively. The reduced traffic scenario leads to reduced NO(2) and PM(2.5) but increased O(3) concentrations in urban areas. Guangzhou is located in a VOC‐limited O(3) formation regime, and traffic is a key factor in controlling NO(x) and O(3). The reduced industrial VOC scenario leads to reduced O(3) concentrations throughout the mitigation domain. The maximum decrease in median hourly NO(2) is >11 μg/m³, and the maximum increase in the median daily maximum 8‐hr rolling O(3) is >10 μg/m³ for the reduced traffic scenario. When controls on both sectors are applied, the O(3) increase reduces to <7 μg/m³. The daily averaged PM(2.5) decreases by <2 μg/m³ for the reduced traffic scenario and varies little for the reduced industrial VOC scenario. An O(3) episode analysis of the dual‐control scenario leads to O(3) decreases of up to 15 μg/m³ (8‐hr metric) and 25 μg/m³ (1‐hr metric) in rural areas. John Wiley and Sons Inc. 2022-03-11 /pmc/articles/PMC8914409/ /pubmed/35795693 http://dx.doi.org/10.1029/2021GH000506 Text en © 2022 The Authors. GeoHealth published by Wiley Periodicals LLC on behalf of American Geophysical Union. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Zhang, Xuguo Stocker, Jenny Johnson, Kate Fung, Yik Him Yao, Teng Hood, Christina Carruthers, David Fung, Jimmy C. H. Implications of Mitigating Ozone and Fine Particulate Matter Pollution in the Guangdong‐Hong Kong‐Macau Greater Bay Area of China Using a Regional‐To‐Local Coupling Model |
title | Implications of Mitigating Ozone and Fine Particulate Matter Pollution in the Guangdong‐Hong Kong‐Macau Greater Bay Area of China Using a Regional‐To‐Local Coupling Model |
title_full | Implications of Mitigating Ozone and Fine Particulate Matter Pollution in the Guangdong‐Hong Kong‐Macau Greater Bay Area of China Using a Regional‐To‐Local Coupling Model |
title_fullStr | Implications of Mitigating Ozone and Fine Particulate Matter Pollution in the Guangdong‐Hong Kong‐Macau Greater Bay Area of China Using a Regional‐To‐Local Coupling Model |
title_full_unstemmed | Implications of Mitigating Ozone and Fine Particulate Matter Pollution in the Guangdong‐Hong Kong‐Macau Greater Bay Area of China Using a Regional‐To‐Local Coupling Model |
title_short | Implications of Mitigating Ozone and Fine Particulate Matter Pollution in the Guangdong‐Hong Kong‐Macau Greater Bay Area of China Using a Regional‐To‐Local Coupling Model |
title_sort | implications of mitigating ozone and fine particulate matter pollution in the guangdong‐hong kong‐macau greater bay area of china using a regional‐to‐local coupling model |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8914409/ https://www.ncbi.nlm.nih.gov/pubmed/35795693 http://dx.doi.org/10.1029/2021GH000506 |
work_keys_str_mv | AT zhangxuguo implicationsofmitigatingozoneandfineparticulatematterpollutionintheguangdonghongkongmacaugreaterbayareaofchinausingaregionaltolocalcouplingmodel AT stockerjenny implicationsofmitigatingozoneandfineparticulatematterpollutionintheguangdonghongkongmacaugreaterbayareaofchinausingaregionaltolocalcouplingmodel AT johnsonkate implicationsofmitigatingozoneandfineparticulatematterpollutionintheguangdonghongkongmacaugreaterbayareaofchinausingaregionaltolocalcouplingmodel AT fungyikhim implicationsofmitigatingozoneandfineparticulatematterpollutionintheguangdonghongkongmacaugreaterbayareaofchinausingaregionaltolocalcouplingmodel AT yaoteng implicationsofmitigatingozoneandfineparticulatematterpollutionintheguangdonghongkongmacaugreaterbayareaofchinausingaregionaltolocalcouplingmodel AT hoodchristina implicationsofmitigatingozoneandfineparticulatematterpollutionintheguangdonghongkongmacaugreaterbayareaofchinausingaregionaltolocalcouplingmodel AT carruthersdavid implicationsofmitigatingozoneandfineparticulatematterpollutionintheguangdonghongkongmacaugreaterbayareaofchinausingaregionaltolocalcouplingmodel AT fungjimmych implicationsofmitigatingozoneandfineparticulatematterpollutionintheguangdonghongkongmacaugreaterbayareaofchinausingaregionaltolocalcouplingmodel |