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| Titel |
Contributions of pollutants from North China Plain to surface ozone at the Shangdianzi GAW Station |
| VerfasserIn |
W. Lin, X. Xu, X. Zhang, J. Tang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 8, no. 19 ; Nr. 8, no. 19 (2008-10-14), S.5889-5898 |
| Datensatznummer |
250006404
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| Publikation (Nr.) |
 copernicus.org/acp-8-5889-2008.pdf |
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| Zusammenfassung |
| Regional ozone pollution has become one of the top environmental concerns in
China, especially in those economically vibrant and densely populated
regions, such as North China region including Beijing. To address this
issue, surface ozone and ancillary data over the period 2004–2006 from the
Shangdianzi Regional Background Station in north China were analyzed. Due to
the suitable location and valley topography of the site, transport of
pollutants from the North China Plain was easily observed and quantified
according to surface wind directions. Regional (polluted) and background
(clean) ozone concentrations were obtained by detailed statistic analysis.
Contribution of pollutants from North China Plain to surface ozone at SDZ
was estimated by comparing ozone concentrations observed under SW wind
conditions and that under NE wind conditions. The average daily accumulated
ozone contribution was estimated to be 240 ppb·hr. The average regional
contributions to surface ozone at SDZ from the North China Plain were 21.8 ppb for the whole year, and 19.2, 28.9, 25.0, and 10.0 ppb for spring,
summer, autumn, and winter, respectively. The strong ozone contribution in
summer led to disappearance of the spring ozone maximum phenomenon at SDZ
under winds other than from the NNW to E sectors. The emissions of nitrogen
oxide in the North China plain cause a decrease in ozone concentrations in
winter. |
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