Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Atmos. Chem. Phys., 16, 10637-10650, 2016
https://doi.org/10.5194/acp-16-10637-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
26 Aug 2016
Significant increase of summertime ozone at Mount Tai in Central Eastern China
Lei Sun1, Likun Xue1, Tao Wang2,1, Jian Gao3, Aijun Ding4, Owen R. Cooper5,6, Meiyun Lin7,8, Pengju Xu9, Zhe Wang2, Xinfeng Wang1, Liang Wen1, Yanhong Zhu1, Tianshu Chen1, Lingxiao Yang1,10, Yan Wang10, Jianmin Chen1,10, and Wenxing Wang1 1Environment Research Institute, Shandong University, Ji'nan, Shandong, China
2Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hong Kong, China
3Chinese Research Academy of Environmental Sciences, Beijing, China
4Institute for Climate and Global Change Research and School of Atmospheric Sciences, Nanjing University, Nanjing, Jiangsu, China
5Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, USA
6NOAA Earth System Research Laboratory, Boulder, Colorado, USA
7Atmospheric and Oceanic Sciences, Princeton University, Princeton, New Jersey, USA
8NOAA Geophysical Fluid Dynamics Laboratory, Princeton, New Jersey, USA
9School of Geography and Environment, Shandong Normal University, Ji'nan, Shandong, China
10School of Environmental Science and Engineering, Shandong University, Ji'nan, Shandong, China
Abstract. Tropospheric ozone (O3) is a trace gas playing important roles in atmospheric chemistry, air quality and climate change. In contrast to North America and Europe, long-term measurements of surface O3 are very limited in China. We compile available O3 observations at Mt. Tai – the highest mountain over the North China Plain – during 2003–2015 and analyze the decadal change of O3 and its sources. A linear regression analysis shows that summertime O3 measured at Mt. Tai has increased significantly by 1.7 ppbv yr−1 for June and 2.1 ppbv yr−1 for the July–August average. The observed increase is supported by a global chemistry-climate model hindcast (GFDL-AM3) with O3 precursor emissions varying from year to year over 1980–2014. Analysis of satellite data indicates that the O3 increase was mainly due to the increased emissions of O3 precursors, in particular volatile organic compounds (VOCs). An important finding is that the emissions of nitrogen oxides (NOx) have diminished since 2011, but the increase of VOCs appears to have enhanced the ozone production efficiency and contributed to the observed O3 increase in central eastern China. We present evidence that controlling NOx alone, in the absence of VOC controls, is not sufficient to reduce regional O3 levels in North China in a short period.

Citation: Sun, L., Xue, L., Wang, T., Gao, J., Ding, A., Cooper, O. R., Lin, M., Xu, P., Wang, Z., Wang, X., Wen, L., Zhu, Y., Chen, T., Yang, L., Wang, Y., Chen, J., and Wang, W.: Significant increase of summertime ozone at Mount Tai in Central Eastern China, Atmos. Chem. Phys., 16, 10637-10650, https://doi.org/10.5194/acp-16-10637-2016, 2016.
Publications Copernicus
Download
Short summary
We compiled the available observations of surface O3 at Mt. Tai – the highest mountain in the North China Plain, and found a significant increase of O3 concenrations from 2003 to 2015. The observed O3 increase was mainly due to the increase of O3 precursors, especially VOCs. Our analysis shows that controlling NOx alone, in the absence of VOC controls, is not sufficient to reduce regional O3 levels in North China in a short period.
We compiled the available observations of surface O3 at Mt. Tai – the highest mountain in the...
Share