significant increase of surface ozone at a rural site, north of eastern china
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2016
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Abstract
Ozone pollution in eastern China has become one of the top environmental
issues. Quantifying the temporal trend of surface ozone helps to assess the
impacts of the anthropogenic precursor reductions and the likely effects of
emission control strategies implemented. In this paper, ozone data collected
at the Shangdianzi (SDZ) regional atmospheric background station from 2003 to
2015 are presented and analyzed to obtain the variation in the trend of
surface ozone in the most polluted region of China, north of eastern China or
the North China Plain. A modified Kolmogorov–Zurbenko (KZ) filter method was
performed on the maximum daily average 8 h (MDA8) concentrations of ozone to
separate the contributions of different factors from the variation of surface
ozone and remove the influence of meteorological fluctuations on surface
ozone. Results reveal that the short-term, seasonal and long-term components
of ozone account for 36.4, 57.6 and 2.2 % of the total variance,
respectively. The long-term trend indicates that the MDA8 has undergone a
significant increase in the period of 2003–2015, with an average rate of
1.13 ± 0.01 ppb year−1 (R2 = 0.92). It is found that
meteorological factors did not significantly influence the long-term
variation of ozone and the increase may be completely attributed to changes
in emissions. Furthermore, there is no significant correlation between the
long-term O3 and NO2 trends. This study suggests that emission
changes in VOCs might have played a more important role in the observed
increase of surface ozone at SDZ.
| Reference Key |
ma2016atmosphericsignificant
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|---|---|
| Authors | ;Z. Ma;Z. Ma;J. Xu;J. Xu;W. Quan;Z. Zhang;W. Lin;X. Xu |
| Journal | Journal of agricultural and food chemistry |
| Year | 2016 |
| DOI |
10.5194/acp-16-3969-2016
|
| URL | |
| Keywords |
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