Associations of interannual variation in summer tropospheric ozone with the Western Pacific Subtropical High in China from 1999 to 2017
<p>Associations between tropospheric ozone (<span class="inline-formula">O<sub>3</sub></span>) and climate variations have been extensively investigated worldwide. However, given the lack of historical <span class="inline-formula">O<sub>3...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-12-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/23/15629/2023/acp-23-15629-2023.pdf |
| _version_ | 1797384588321882112 |
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| author | X. Zhang R. Zhugu X. Jian X. Liu K. Chen S. Tao J. Liu H. Gao T. Huang J. Ma |
| author_facet | X. Zhang R. Zhugu X. Jian X. Liu K. Chen S. Tao J. Liu H. Gao T. Huang J. Ma |
| author_sort | X. Zhang |
| collection | DOAJ |
| description | <p>Associations between tropospheric ozone (<span class="inline-formula">O<sub>3</sub></span>) and climate variations have been extensively investigated worldwide. However, given the lack of historical <span class="inline-formula">O<sub>3</sub></span> monitoring data, the knowledge gaps regarding the influences of climate variations on long-term <span class="inline-formula">O<sub>3</sub></span> trends in China remain. The present study used a tropospheric <span class="inline-formula">O<sub>3</sub></span> dataset from the summers of 1999 to 2017 simulated by an atmospheric chemistry model to explore the linkage between summer <span class="inline-formula">O<sub>3</sub></span> and a dominant atmospheric circulation system – the Western Pacific Subtropical High (WPSH) pressure – on an interannual basis in China. During this period, both WPSH strength and <span class="inline-formula">O<sub>3</sub></span> concentrations in eastern and central China illustrated a growing trend. An EOF analysis was conducted to examine significant summer <span class="inline-formula">O<sub>3</sub></span> characteristics and patterns and their potential connections with the WPSH. We find that the correlation between the first principal component of summer ozone concentration in the EOF analysis and the WPSH reached 0.56 (<span class="inline-formula"><i>P</i>≤0.01</span>) in China from 1999 to 2017. We show that the WPSH determines interannual fluctuations of summer <span class="inline-formula">O<sub>3</sub></span>, whereas <span class="inline-formula">O<sub>3</sub></span> precursor emissions contribute primarily to the <span class="inline-formula">O<sub>3</sub></span> long-term trend. Our results reveal that the WPSH plays a vital role in <span class="inline-formula">O<sub>3</sub></span> perturbation in the eastern seaboard regions and inland China. Precursor emissions made more significant contributions of up to 60 % to increasing <span class="inline-formula">O<sub>3</sub></span> trends in the inland urban agglomerations than coastal regions in eastern and southern China. The strongest contribution of meteorological conditions associated with the WPSH to summer <span class="inline-formula">O<sub>3</sub></span> occurred in the Yangtze River Delta (YRD), accounting for over 9 % to ozone perturbations from 1999 to 2017. We find that the effect of the WPSH on regional <span class="inline-formula">O<sub>3</sub></span> depends on the spatial proximity to the WPSH. We attributed the effects of the WPSH on <span class="inline-formula">O<sub>3</sub></span> interannual variations to the changes in air temperature, precipitation, and winds associated with the WPSH's intensity and positions.</p> |
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| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-03-08T21:37:47Z |
| publishDate | 2023-12-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-167769d3afbd4995a2410e54f218b7722023-12-20T16:38:09ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242023-12-0123156291564210.5194/acp-23-15629-2023Associations of interannual variation in summer tropospheric ozone with the Western Pacific Subtropical High in China from 1999 to 2017X. Zhang0R. Zhugu1X. Jian2X. Liu3K. Chen4S. Tao5J. Liu6H. Gao7T. Huang8J. Ma9Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaLaboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaLaboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaLaboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaLaboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaLaboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaLaboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaKey Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaKey Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, ChinaLaboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China<p>Associations between tropospheric ozone (<span class="inline-formula">O<sub>3</sub></span>) and climate variations have been extensively investigated worldwide. However, given the lack of historical <span class="inline-formula">O<sub>3</sub></span> monitoring data, the knowledge gaps regarding the influences of climate variations on long-term <span class="inline-formula">O<sub>3</sub></span> trends in China remain. The present study used a tropospheric <span class="inline-formula">O<sub>3</sub></span> dataset from the summers of 1999 to 2017 simulated by an atmospheric chemistry model to explore the linkage between summer <span class="inline-formula">O<sub>3</sub></span> and a dominant atmospheric circulation system – the Western Pacific Subtropical High (WPSH) pressure – on an interannual basis in China. During this period, both WPSH strength and <span class="inline-formula">O<sub>3</sub></span> concentrations in eastern and central China illustrated a growing trend. An EOF analysis was conducted to examine significant summer <span class="inline-formula">O<sub>3</sub></span> characteristics and patterns and their potential connections with the WPSH. We find that the correlation between the first principal component of summer ozone concentration in the EOF analysis and the WPSH reached 0.56 (<span class="inline-formula"><i>P</i>≤0.01</span>) in China from 1999 to 2017. We show that the WPSH determines interannual fluctuations of summer <span class="inline-formula">O<sub>3</sub></span>, whereas <span class="inline-formula">O<sub>3</sub></span> precursor emissions contribute primarily to the <span class="inline-formula">O<sub>3</sub></span> long-term trend. Our results reveal that the WPSH plays a vital role in <span class="inline-formula">O<sub>3</sub></span> perturbation in the eastern seaboard regions and inland China. Precursor emissions made more significant contributions of up to 60 % to increasing <span class="inline-formula">O<sub>3</sub></span> trends in the inland urban agglomerations than coastal regions in eastern and southern China. The strongest contribution of meteorological conditions associated with the WPSH to summer <span class="inline-formula">O<sub>3</sub></span> occurred in the Yangtze River Delta (YRD), accounting for over 9 % to ozone perturbations from 1999 to 2017. We find that the effect of the WPSH on regional <span class="inline-formula">O<sub>3</sub></span> depends on the spatial proximity to the WPSH. We attributed the effects of the WPSH on <span class="inline-formula">O<sub>3</sub></span> interannual variations to the changes in air temperature, precipitation, and winds associated with the WPSH's intensity and positions.</p>https://acp.copernicus.org/articles/23/15629/2023/acp-23-15629-2023.pdf |
| spellingShingle | X. Zhang R. Zhugu X. Jian X. Liu K. Chen S. Tao J. Liu H. Gao T. Huang J. Ma Associations of interannual variation in summer tropospheric ozone with the Western Pacific Subtropical High in China from 1999 to 2017 Atmospheric Chemistry and Physics |
| title | Associations of interannual variation in summer tropospheric ozone with the Western Pacific Subtropical High in China from 1999 to 2017 |
| title_full | Associations of interannual variation in summer tropospheric ozone with the Western Pacific Subtropical High in China from 1999 to 2017 |
| title_fullStr | Associations of interannual variation in summer tropospheric ozone with the Western Pacific Subtropical High in China from 1999 to 2017 |
| title_full_unstemmed | Associations of interannual variation in summer tropospheric ozone with the Western Pacific Subtropical High in China from 1999 to 2017 |
| title_short | Associations of interannual variation in summer tropospheric ozone with the Western Pacific Subtropical High in China from 1999 to 2017 |
| title_sort | associations of interannual variation in summer tropospheric ozone with the western pacific subtropical high in china from 1999 to 2017 |
| url | https://acp.copernicus.org/articles/23/15629/2023/acp-23-15629-2023.pdf |
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