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Discussion papers
https://doi.org/10.5194/acp-2018-537
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2018-537
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 21 Jun 2018

Research article | 21 Jun 2018

Status
This preprint has been retracted.

Summer ozone variation in North China based on satellite and site observations

Lihua Zhou1, Jing Zhang1, Hui Wang1, Wenhao Xue1, Xiaohui Zheng1, and Siguang Zhu2 Lihua Zhou et al.
  • 1College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
  • 2Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China

Abstract. Compared with other regions, air pollution in North China is very serious, especially its levels of fine particulate matter, which are closely associated with the concentrations of polluting gases, such as nitrogen oxides, sulfur oxides, organic gases, and ozone. Fine particle pollution has been studied in-depth, but there is less known about ozone. This paper focuses on the interannual variability of tropospheric ozone in North China and identifies its influential factors. Our analysis relies on satellite observations (ozone, nitrogen dioxide, sulfur dioxide, carbon monoxide and formaldehyde concentrations) and near-surface data (carbon monoxide, sulfur dioxide, nitrogen dioxide, fine particulate concentrations, temperature, and humidity). Studies have shown that the tropospheric ozone column in North China has been at a high level for the past 3 years, with the similar time series for temperature and formaldehyde. However, trends in ozone are opposite to those of sulfur dioxide and nitrogen dioxide over this 3-year period. This indicates that the increase in ozone in North China was mainly caused by the increase in temperature and an increase in organic gas content, rather than by nitrogen oxides. Over both temporal and spatial scales, the production rate of ozone appears to be most sensitive to temperature change, as ground observations in Beijing have suggested.

This preprint has been retracted.
Lihua Zhou et al.
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Lihua Zhou et al.
Lihua Zhou et al.
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Short summary
In this study, tropospheric ozone pollution in North China in the past 12 years has been evaluated with satellite observations to find out the cause of long-term pollution changes. And the factors influencing ozone pollution were analyzed with the ground observations in the past 3 years. In this paper, meteorological conditions and trace gases (nitrogen dioxide, sulfur dioxide, carbon monoxide, formaldehyde, PM2.5, temperature, solar radiation and relative humidity) were taken into account.
In this study, tropospheric ozone pollution in North China in the past 12 years has been...
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