Abrupt reversal in emissions and atmospheric abundance of HCFC-133a (CF3CH2Cl)

Vollmer, Martin, Rigby, Matt, Laube, Johannes, Henne, Stephan, Rhee, Tae Siek, Gooch, Lauren, Wenger, Angelina, Young, Dickon, Steele, Paul, Langenfelds, Ray, Brenninkmeijer, Carl, Wang, Jia-Lin, Ou-Yang, Chang-Feng, Wyss, Simon, Hill, Matthias, Oram, David, Krummel, Paul, Schoenenberger, Fabian, Zellweger, Christoph, Fraser, Paul, Sturges, William ORCID: https://orcid.org/0000-0002-9044-7169, O'Doherty, Simon and Reimann, Stefan (2015) Abrupt reversal in emissions and atmospheric abundance of HCFC-133a (CF3CH2Cl). Geophysical Research Letters, 42 (20). 8702–8710. ISSN 0094-8276

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Hydrochlorofluorocarbon HCFC-133a (CF3CH2Cl) is an anthropogenic compound whose consumption for emissive use is restricted under the Montreal Protocol. A recent study showed rapidly increasing atmospheric abundances and emissions. We report that, following this rise, the at- mospheric abundance and emissions have declined sharply in the past three years. We find a Northern Hemisphere HCFC-133a increase from 0.13 ppt (dry air mole fraction in parts-per-trillion) in 2000 to 0.50 ppt in 2012–mid-2013 followed by an abrupt reversal to 0.44 ppt by early 2015. Global emissions derived from these observations peaked at 3.1 kt in 2011, followed by a rapid decline of 0.5 kt yr−2 to 1.5 kt yr−1 in 2014. Sporadic HCFC-133a pollution events are detected in Europe from our high-resolution HCFC-133a records at three European stations, and in Asia from sam- ples collected in Taiwan. European emissions are estimated to be <0.1 kt yr−1 although emission hotspots were identi- fied in France.

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
UEA Research Groups: Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
Depositing User: Pure Connector
Date Deposited: 13 Nov 2015 17:01
Last Modified: 13 Apr 2023 13:48
URI: https://ueaeprints.uea.ac.uk/id/eprint/55266
DOI: 10.1002/2015GL065846


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