학술논문
A renewed rise in global HCFC-141b emissions between 2017-2021
Document Type
Academic Journal
Author
Western, Luke M.; Redington, Alison L.; Manning, Alistair J.; Trudinger, Cathy M.; Hu, Lei; Henne, Stephan; Fang, Xuekun; Kuijpers, Lambert J. M.; Theodoridi, Christina; Godwin, David S.; Arduini, Jgor; Dunse, Bronwyn; Engel, Andreas; Fraser, Paul J.; Harth, Christina M.; Krummel, Paul B.; Maione, Michela; Mühle, Jens; O'Doherty, Simon; Park, Hyeri; Park, Sunyoung; Reimann, Stefan; Salameh, Peter K.; Say, Daniel; Schmidt, Roland; Schuck, Tanja; Siso, Carolina; Stanley, Kieran M.; Vimont, Isaac; Vollmer, Martin K.; Young, Dickon; Prinn, Ronald G.; Weiss, Ray F.; Montzka, Stephen A.; Rigby, Matthew
Source
Atmospheric Chemistry and Physics. July 28, 2022, Vol. 22 Issue 14, 9601
Subject
Language
English
ISSN
1680-7316
Abstract
Global emissions of the ozone-depleting gas HCFC-141b (1,1-dichloro-1-fluoroethane, CH.sub.3 CCl.sub.2 F) derived from measurements of atmospheric mole fractions increased between 2017 and 2021 despite a fall in reported production and consumption of HCFC-141b for dispersive uses. HCFC-141b is a controlled substance under the Montreal Protocol, and its phase-out is currently underway, after a peak in reported consumption and production in developing (Article 5) countries in 2013. If reported production and consumption are correct, our study suggests that the 2017-2021 rise is due to an increase in emissions from the bank when appliances containing HCFC-141b reach the end of their life, or from production of HCFC-141b not reported for dispersive uses. Regional emissions have been estimated between 2017-2020 for all regions where measurements have sufficient sensitivity to emissions. This includes the regions of northwestern Europe, east Asia, the United States and Australia, where emissions decreased by a total of 2.3 ± 4.6 Gg yr.sup.-1, compared to a mean global increase of 3.0 ± 1.2 Gg yr.sup.-1 over the same period. Collectively these regions only account for around 30 % of global emissions in 2020. We are not able to pinpoint the source regions or specific activities responsible for the recent global emission rise.
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Byline: To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link: https://acp.copernicus.org/articles/22/9601/2022/acp-22-9601-2022.html, or to download the full-text, click the download button on this [...]