Articles | Volume 22, issue 4
Atmos. Chem. Phys., 22, 2891–2907, 2022
https://doi.org/10.5194/acp-22-2891-2022
Atmos. Chem. Phys., 22, 2891–2907, 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 et al.

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

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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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