Seasonal and spatial variability of surface ozone over China: contributions from background and domestic pollution
Open accessPublished version of a preprint
Abstract
Abstract. Both observations and a 3-D chemical transport model suggest that surface ozone over populated eastern China features a summertime trough and that the month when surface ozone peaks differs by latitude and region. Source-receptor analysis is used to quantify the contributions of background ozone and Chinese anthropogenic emissions on this variability. Annual mean background ozone over China shows a spatial gradient from 55 ppbv in the northwest to 20 ppbv in the southeast, corresponding with changes in topography and ozone lifetime. Pollution background ozone (annual mean of 12.6 ppbv) shows a minimum in the summer and maximum in the spring. On the monthly-mean basis, Chinese pollution ozone (CPO) has a peak of 20–25 ppbv in June north of the Yangtze River and in October south of it, which explains the peaks of surface ozone in these months. The summertime trough in surface ozone over eastern China can be explained by the decrease of background ozone from spring to summer (by −15 ppbv regionally averaged over eastern China). Tagged simulations suggest that long-range transport of ozone from northern mid-latitude continents (including Europe and North America) reaches a minimum in the summer, whereas ozone from Southeast Asia exhibits a maximum in the summer over eastern China. This contrast in seasonality provides clear evidence that the seasonal switch in monsoonal wind patterns plays a significant role in determining the seasonality of background ozone over China.
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The potential thresholds around 80 μg/m3 in the spline approach and 90 μg/m3 in the threshold approach are near the mean total background ozone level over China (44.1 ppb, approximately 88 μg/m3).
“In the present study, potential thresholds around 80 μg/m3 in the spline approach and 90 μg/m3 in the threshold approach were suggested, both of which are near the mean total background ozone level over China (44.1 ppb, approximately 88 μg/m3) (Wang et al., 2011).”
From Acute effect of ozone exposure on daily mortality in seven cities of Jiangsu Province, China: no clear evidence for threshold (2017) · cites this paper as Wang et al., 2011
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References 58 · Cited by 195
- Authors
- Wang, Y., Zhang, Y., Hao, J., & Luo, M.
- Affiliations
- Tsinghua University (CN)
- Jet Propulsion Laboratory (US)
- Venue
- Atmospheric chemistry and physics
- Publisher
- Copernicus GmbH
- Published
- 2011-04-15
- Volume
- 11
- Issue
- 7
- Pages
- 3511-3525
- ISSN
- 1680-7316 (ISSN-L)
- 1680-7324
- OpenAlex
- W2020825531
- Cited by
- 195
- References
- 58
- Citations by year
- 2026: 5 · 2025: 6 · 2024: 15 · 2023: 9 · 2022: 28 · 2021: 23 · 2020: 16 · 2019: 16 · 2018: 9 · 2017: 18 · 2016: 10 · 2015: 12 · 2014: 14 · 2013: 3 · 2012: 10
- FWCI
- 5.34
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Atmospheric chemistry and physics (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Aeronautics and Space Administration
- National Natural Science Foundation of China (41005060)
- Tsinghua University
- Tsinghua Initiative Scientific Research Program
- Topics
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric Ozone and Climate
- Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric aerosols and clouds
- Keywords
- surface ozone, seasonal variation, spatial variability, background ozone, anthropogenic emissions, source-receptor analysis, long-range transport, monsoon, Yangtze River, ozone lifetime, topography, eastern China, chemical transport model
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