Articles | Volume 18, issue 6
Atmos. Chem. Phys., 18, 4153–4169, 2018
https://doi.org/10.5194/acp-18-4153-2018
Atmos. Chem. Phys., 18, 4153–4169, 2018
https://doi.org/10.5194/acp-18-4153-2018
Research article
26 Mar 2018
Research article | 26 Mar 2018

Recent increases in the atmospheric growth rate and emissions of HFC-23 (CHF3) and the link to HCFC-22 (CHClF2) production

Peter G. Simmonds et al.

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Short summary
Recent measurements of the potent greenhouse gas HFC-23, a by-product of HCFC-22 production, show a 28 % increase in the atmospheric mole fraction from 2009 to 2016. A minimum in the atmospheric abundance of HFC-23 in 2009 was attributed to abatement of HFC-23 emissions by incineration under the Clean Development Mechanism (CDM). Our results indicate that the recent increase in HFC-23 emissions is driven by failure of mitigation under the CDM to keep pace with increased HCFC-22 production.
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