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

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

doi:https://doi.org/10.5194/acp-22-2891-2022

Articles | Volume 22, issue 4

Atmos. Chem. Phys., 22, 2891–2907, 2022

https://doi.org/10.5194/acp-22-2891-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Atmos. Chem. Phys., 22, 2891–2907, 2022

https://doi.org/10.5194/acp-22-2891-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 4

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 et al.

Supplement

https://doi.org/10.5194/acp-22-2891-2022-supplement

Data sets

Halocarbons & other Atmospheric Trace Species (HATS) NOAA GML https://gml.noaa.gov/hats

ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols S. C. Wofsy, S. Afshar, H. M. Allen, et al. https://doi.org/10.3334/ORNLDAAC/1581

HIAPER Pole-to-Pole Observations (HIPPO) NCAR/UCAR Earth Observing Laboratory https://www.eol.ucar.edu/field_projects/hippo

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.