Articles | Volume 22, issue 4
https://doi.org/10.5194/acp-22-2891-2022
https://doi.org/10.5194/acp-22-2891-2022
Research article
 | 
03 Mar 2022
Research article |  | 03 Mar 2022

Continental-scale contributions to the global CFC-11 emission increase between 2012 and 2017

Lei Hu, Stephen A. Montzka, Fred Moore, Eric Hintsa, Geoff Dutton, M. Carolina Siso, Kirk Thoning, Robert W. Portmann, Kathryn McKain, Colm Sweeney, Isaac Vimont, David Nance, Bradley Hall, and Steven Wofsy

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Cited articles

Adcock, K. E., Ashfold, M. J., Chou, C. C. K., Gooch, L. J., Mohd Hanif, N., Laube, J. C., Oram, D. E., Ou-Yang, C.-F., Panagi, M., Sturges, W. T., and Reeves, C. E.: Investigation of East Asian Emissions of CFC-11 Using atmospheric observations in Taiwan, Environ. Sci. Technol., 54, 3814–3822, https://doi.org/10.1021/acs.est.9b06433, 2020. 
Chen, X., Huang, X., and Strow, L. L.: Near-Global CFC-11 trends as observed by Atmospheric Infrared Sounder From 2003 to 2018, J. Geophys. Res.-Atmos., 125, e2020JD033051, https://doi.org/10.1029/2020JD033051, 2020. 
Davis, N. A., Davis, S. M., Portmann, R. W., Ray, E., Rosenlof, K. H., and Yu, P.: A comprehensive assessment of tropical stratospheric upwelling in the specified dynamics Community Earth System Model 1.2.2 – Whole Atmosphere Community Climate Model (CESM (WACCM)), Geosci. Model Dev., 13, 717–734, https://doi.org/10.5194/gmd-13-717-2020, 2020. 
Dhomse, S. S., Feng, W., Montzka, S. A., Hossaini, R., Keeble, J., Pyle, J. A., Daniel, J. S., and Chipperfield, M. P.: Delay in recovery of the Antarctic ozone hole from unexpected CFC-11 emissions, Nat. Commun., 10, 5781, https://doi.org/10.1038/s41467-019-13717-x, 2019. 
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Short summary
The unexpected increase in CFC-11 emissions between 2012 and 2017 resulted in concerns about delaying the stratospheric ozone recovery. Although the subsequent decline of CFC-11 emissions indicated a mitigation in part to this problem, the regions fully responsible for these large emission changes were unclear. Here, our new estimate, based on atmospheric measurements from two global campaigns and from NOAA, suggests Asia primarily contributed to the global CFC-11 emission rise during 2012–2017.
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