Measurement report: Long-term variations in carbon monoxide at a background station in China's Yangtze River Delta region

Chen, Yijing; Ma, Qianli; Lin, Weili; Xu, Xiaobin; Yao, Jie; Gao, Wei

doi:https://doi.org/10.5194/acp-20-15969-2020

Articles | Volume 20, issue 24

https://doi.org/10.5194/acp-20-15969-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-15969-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 24

Measurement report

|

22 Dec 2020

Measurement report |

| 22 Dec 2020

Measurement report: Long-term variations in carbon monoxide at a background station in China's Yangtze River Delta region

Yijing Chen, Qianli Ma, Weili Lin, Xiaobin Xu, Jie Yao, and Wei Gao

Supplement

https://doi.org/10.5194/acp-20-15969-2020-supplement

Data sets

Global fire emissions estimates during 1997–2016 (https://www.geo.vu.nl/~gwerf/GFED/GFED4/) G. R. van der Werf, J. T. Randerson, L. Giglio, T. T. van Leeuwen, Y. Chen, B. M. Rogers, M. Mu, M. J. E. van Marle, D. C. Morton, G. J. Collatz, R. J. Yokelson, and P. S. Kasibhatla https://doi.org/10.5194/essd-9-697-2017

MIX: a mosaic Asian anthropogenic emission inventory under the international collaboration framework of the MICS-Asia and HTAP (http://meicmodel.org/dataset-mix.html) M. Li, Q. Zhang, J.-I. Kurokawa, J.-H. Woo, K. He, Z. Lu, T. Ohara, Y. Song, D. G. Streets, G. R. Carmichael, Y. Cheng, C. Hong, H. Huo, X. Jiang, S. Kang, F. Liu, H. Su, and B. Zheng https://doi.org/10.5194/acp-17-935-2017

MOPITT (Measurements of Pollution in the Troposphere) Version 8 Product User's Guide MOPITT Algorithm Development Team http://www.satdatafresh.com/CO_MOPITT.html

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Short summary

CO is one of the major air pollutants. Our study showed that the long-term CO levels at a background station in one of the most developed areas of China decreased significantly and verified that this downward trend was attributed to the decrease in anthropogenic emissions, which indicated that the adopted pollution control policies were effective. Also, this decrease has an implication for the atmospheric chemistry considering the negative correlation between CO levels and OH radical's lifetime.