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The Impact of Meteorology and Emissions on Surface Ozone in Shandong Province, China, during Summer 2014–2019

China has been experiencing severe ozone pollution problems in recent years. While a number of studies have focused on the ozone-pollution-prone regions such as the North China Plain, Yangtze River Delta, and Pearl River Delta regions, few studies have investigated the mechanisms modulating the inte...

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Autores principales: Wang, Houwen, Gao, Yang, Sheng, Lifang, Wang, Yuhang, Zeng, Xinran, Kou, Wenbin, Ma, Mingchen, Cheng, Wenxuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9180826/
https://www.ncbi.nlm.nih.gov/pubmed/35682342
http://dx.doi.org/10.3390/ijerph19116758
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author Wang, Houwen
Gao, Yang
Sheng, Lifang
Wang, Yuhang
Zeng, Xinran
Kou, Wenbin
Ma, Mingchen
Cheng, Wenxuan
author_facet Wang, Houwen
Gao, Yang
Sheng, Lifang
Wang, Yuhang
Zeng, Xinran
Kou, Wenbin
Ma, Mingchen
Cheng, Wenxuan
author_sort Wang, Houwen
collection PubMed
description China has been experiencing severe ozone pollution problems in recent years. While a number of studies have focused on the ozone-pollution-prone regions such as the North China Plain, Yangtze River Delta, and Pearl River Delta regions, few studies have investigated the mechanisms modulating the interannual variability of ozone concentrations in Shandong Province, where a large population is located and is often subject to ozone pollution. By utilizing both the reanalysis dataset and regional numerical model (WRF-CMAQ), we delve into the potential governing mechanisms of ozone pollution in Shandong Province—especially over the major port city of Qingdao—during summer 2014–2019. During this period, ozone pollution in Qingdao exceeded the tier II standard of the Chinese National Ambient Air Quality (GB 3095-2012) for 75 days. From the perspective of meteorology, the high-pressure ridge over Baikal Lake and to its northeast, which leads to a relatively low humidity and sufficient sunlight, is the most critical weather system inducing high-ozone events in Qingdao. In terms of emissions, biogenic emissions contribute to ozone enhancement close to 10 ppb in the west and north of Shandong Province. Numerical experiments show that the local impact of biogenic emissions on ozone production in Shandong Province is relatively small, whereas biogenic emissions on the southern flank of Shandong Province enhance ozone production and further transport northeastward, resulting in an increase in ozone concentrations over Shandong Province. For the port city of Qingdao, ship emissions increase ozone concentrations when sea breezes (easterlies) prevail over Qingdao, with the 95th percentile reaching 8.7 ppb. The findings in this study have important implications for future ozone pollution in Shandong Province, as well as the northern and coastal areas in China.
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spelling pubmed-91808262022-06-10 The Impact of Meteorology and Emissions on Surface Ozone in Shandong Province, China, during Summer 2014–2019 Wang, Houwen Gao, Yang Sheng, Lifang Wang, Yuhang Zeng, Xinran Kou, Wenbin Ma, Mingchen Cheng, Wenxuan Int J Environ Res Public Health Article China has been experiencing severe ozone pollution problems in recent years. While a number of studies have focused on the ozone-pollution-prone regions such as the North China Plain, Yangtze River Delta, and Pearl River Delta regions, few studies have investigated the mechanisms modulating the interannual variability of ozone concentrations in Shandong Province, where a large population is located and is often subject to ozone pollution. By utilizing both the reanalysis dataset and regional numerical model (WRF-CMAQ), we delve into the potential governing mechanisms of ozone pollution in Shandong Province—especially over the major port city of Qingdao—during summer 2014–2019. During this period, ozone pollution in Qingdao exceeded the tier II standard of the Chinese National Ambient Air Quality (GB 3095-2012) for 75 days. From the perspective of meteorology, the high-pressure ridge over Baikal Lake and to its northeast, which leads to a relatively low humidity and sufficient sunlight, is the most critical weather system inducing high-ozone events in Qingdao. In terms of emissions, biogenic emissions contribute to ozone enhancement close to 10 ppb in the west and north of Shandong Province. Numerical experiments show that the local impact of biogenic emissions on ozone production in Shandong Province is relatively small, whereas biogenic emissions on the southern flank of Shandong Province enhance ozone production and further transport northeastward, resulting in an increase in ozone concentrations over Shandong Province. For the port city of Qingdao, ship emissions increase ozone concentrations when sea breezes (easterlies) prevail over Qingdao, with the 95th percentile reaching 8.7 ppb. The findings in this study have important implications for future ozone pollution in Shandong Province, as well as the northern and coastal areas in China. MDPI 2022-06-01 /pmc/articles/PMC9180826/ /pubmed/35682342 http://dx.doi.org/10.3390/ijerph19116758 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Houwen
Gao, Yang
Sheng, Lifang
Wang, Yuhang
Zeng, Xinran
Kou, Wenbin
Ma, Mingchen
Cheng, Wenxuan
The Impact of Meteorology and Emissions on Surface Ozone in Shandong Province, China, during Summer 2014–2019
title The Impact of Meteorology and Emissions on Surface Ozone in Shandong Province, China, during Summer 2014–2019
title_full The Impact of Meteorology and Emissions on Surface Ozone in Shandong Province, China, during Summer 2014–2019
title_fullStr The Impact of Meteorology and Emissions on Surface Ozone in Shandong Province, China, during Summer 2014–2019
title_full_unstemmed The Impact of Meteorology and Emissions on Surface Ozone in Shandong Province, China, during Summer 2014–2019
title_short The Impact of Meteorology and Emissions on Surface Ozone in Shandong Province, China, during Summer 2014–2019
title_sort impact of meteorology and emissions on surface ozone in shandong province, china, during summer 2014–2019
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9180826/
https://www.ncbi.nlm.nih.gov/pubmed/35682342
http://dx.doi.org/10.3390/ijerph19116758
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