Vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern Chinese cities
Abstract Ozone is the primary air pollutant in eastern China during the warm season. Clarifying the differences in the spatio–temporal evolution of the ozone formation sensitivity between ozone polluted days and clean air days is key for the precise formulation of ozone prevention policies. By combi...
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Nature Portfolio
2025-01-01
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| Series: | npj Climate and Atmospheric Science |
| Online Access: | https://doi.org/10.1038/s41612-024-00855-3 |
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| author | Zhuang Wang Hao Zhang Chune Shi Xianguang Ji Yizhi Zhu Congzi Xia Xiaoyun Sun Meng Zhang Xinfeng Lin Shaowei Yan Yuan Zhou Chengzhi Xing Yujia Chen Cheng Liu |
| author_facet | Zhuang Wang Hao Zhang Chune Shi Xianguang Ji Yizhi Zhu Congzi Xia Xiaoyun Sun Meng Zhang Xinfeng Lin Shaowei Yan Yuan Zhou Chengzhi Xing Yujia Chen Cheng Liu |
| author_sort | Zhuang Wang |
| collection | DOAJ |
| description | Abstract Ozone is the primary air pollutant in eastern China during the warm season. Clarifying the differences in the spatio–temporal evolution of the ozone formation sensitivity between ozone polluted days and clean air days is key for the precise formulation of ozone prevention policies. By combining ground–and satellite–based remote sensing with ground station observations, we identified large spatio–temporal differences in the ozone formation sensitivity in eastern Chinese cities under different ozone pollution levels. Diurnally, the NO2 concentration was higher in the morning and lower at noon on the ozone exceedance days. The HCHO concentration was higher throughout the day, and the transition limited regime or NOx–limited regime contributed more to the ozone formation sensitivity on the ozone exceedance days. Vertically, the ratio of HCHO to NO2 (FNR) was higher on ozone exceedance days, and the contributions of NOx–limited regime at 0–2 km and the transition limited regime at 0–1 km on ozone exceedance days increased considerably. Spatially, HCHO in the North China Plain and middle–lower Yangtze River Plain was significantly increased on ozone exceedance days, while the NO2 concentration in the southeast hills was increased on ozone exceedance days. The difference in FNR values between northern and southern cities in eastern China on O3 exceedance days narrowed, and the ozone formation sensitivity in eastern China tended to be under a transition limited regime. The shifts in the ozone formation sensitivity under different ozone pollution levels implies that controlling only one of the precursors cannot achieve the best O3 prevention effect, and the most appropriate ratio of O3 precursor emission reductions should be designed according to ozone formation sensitivity in the different regions. |
| format | Article |
| id | doaj-art-fad0aa7c80174d4591162ef83c135e96 |
| institution | Kabale University |
| issn | 2397-3722 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Climate and Atmospheric Science |
| spelling | doaj-art-fad0aa7c80174d4591162ef83c135e962025-01-26T12:22:27ZengNature Portfolionpj Climate and Atmospheric Science2397-37222025-01-018111410.1038/s41612-024-00855-3Vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern Chinese citiesZhuang Wang0Hao Zhang1Chune Shi2Xianguang Ji3Yizhi Zhu4Congzi Xia5Xiaoyun Sun6Meng Zhang7Xinfeng Lin8Shaowei Yan9Yuan Zhou10Chengzhi Xing11Yujia Chen12Cheng Liu13Anhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing, Anhui Institute of Meteorological SciencesAnhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing, Anhui Institute of Meteorological SciencesAnhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing, Anhui Institute of Meteorological SciencesInformation Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui UniversitySchool of Environmental Science and Engineering, Suzhou University of Science and TechnologyInstitute of Big Data for Vocational Education, Guangdong Polytechnic of Science and TechnologyAnhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing, Anhui Institute of Meteorological SciencesAnhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing, Anhui Institute of Meteorological SciencesShouxian National Climatology Observatory, Huaihe River Basin Typical Farm Eco–meteorological Experiment Field of CMAShouxian National Climatology Observatory, Huaihe River Basin Typical Farm Eco–meteorological Experiment Field of CMAJiangxi Ecological Meteorology CenterKey Lab of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of SciencesAnhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing, Anhui Institute of Meteorological SciencesKey Lab of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of SciencesAbstract Ozone is the primary air pollutant in eastern China during the warm season. Clarifying the differences in the spatio–temporal evolution of the ozone formation sensitivity between ozone polluted days and clean air days is key for the precise formulation of ozone prevention policies. By combining ground–and satellite–based remote sensing with ground station observations, we identified large spatio–temporal differences in the ozone formation sensitivity in eastern Chinese cities under different ozone pollution levels. Diurnally, the NO2 concentration was higher in the morning and lower at noon on the ozone exceedance days. The HCHO concentration was higher throughout the day, and the transition limited regime or NOx–limited regime contributed more to the ozone formation sensitivity on the ozone exceedance days. Vertically, the ratio of HCHO to NO2 (FNR) was higher on ozone exceedance days, and the contributions of NOx–limited regime at 0–2 km and the transition limited regime at 0–1 km on ozone exceedance days increased considerably. Spatially, HCHO in the North China Plain and middle–lower Yangtze River Plain was significantly increased on ozone exceedance days, while the NO2 concentration in the southeast hills was increased on ozone exceedance days. The difference in FNR values between northern and southern cities in eastern China on O3 exceedance days narrowed, and the ozone formation sensitivity in eastern China tended to be under a transition limited regime. The shifts in the ozone formation sensitivity under different ozone pollution levels implies that controlling only one of the precursors cannot achieve the best O3 prevention effect, and the most appropriate ratio of O3 precursor emission reductions should be designed according to ozone formation sensitivity in the different regions.https://doi.org/10.1038/s41612-024-00855-3 |
| spellingShingle | Zhuang Wang Hao Zhang Chune Shi Xianguang Ji Yizhi Zhu Congzi Xia Xiaoyun Sun Meng Zhang Xinfeng Lin Shaowei Yan Yuan Zhou Chengzhi Xing Yujia Chen Cheng Liu Vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern Chinese cities npj Climate and Atmospheric Science |
| title | Vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern Chinese cities |
| title_full | Vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern Chinese cities |
| title_fullStr | Vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern Chinese cities |
| title_full_unstemmed | Vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern Chinese cities |
| title_short | Vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern Chinese cities |
| title_sort | vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern chinese cities |
| url | https://doi.org/10.1038/s41612-024-00855-3 |
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