TY - JOUR
T1 - A renewed rise in global HCFC-141b emissions between 2017-2021
AU - Western, Luke M.
AU - Redington, Alison L.
AU - Manning, Alistair J.
AU - Trudinger, Cathy M.
AU - Hu, Lei
AU - Henne, Stephan
AU - Fang, Xuekun
AU - Kuijpers, Lambert J.M.
AU - Theodoridi, Christina
AU - Godwin, David S.
AU - Arduini, Jgor
AU - Dunse, Bronwyn
AU - Engel, Andreas
AU - Fraser, Paul J.
AU - Harth, Christina M.
AU - Krummel, Paul B.
AU - Maione, Michela
AU - Mühle, Jens
AU - O'Doherty, Simon
AU - Park, Hyeri
AU - Park, Sunyoung
AU - Reimann, Stefan
AU - Salameh, Peter K.
AU - Say, Daniel
AU - Schmidt, Roland
AU - Schuck, Tanja
AU - Siso, Carolina
AU - Stanley, Kieran M.
AU - Vimont, Isaac
AU - Vollmer, Martin K.
AU - Young, Dickon
AU - Prinn, Ronald G.
AU - Weiss, Ray F.
AU - Montzka, Stephen A.
AU - Rigby, Matthew
N1 - Publisher Copyright:
© 2022 The Author(s).
PY - 2022/7/28
Y1 - 2022/7/28
N2 - Global emissions of the ozone-depleting gas HCFC-141b (1,1-dichloro-1-fluoroethane, CH3CCl2F) 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-1, compared to a mean global increase of 3.0 ± 1.2 Gg yr-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.
AB - Global emissions of the ozone-depleting gas HCFC-141b (1,1-dichloro-1-fluoroethane, CH3CCl2F) 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-1, compared to a mean global increase of 3.0 ± 1.2 Gg yr-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.
UR - http://www.scopus.com/inward/record.url?scp=85135257253&partnerID=8YFLogxK
U2 - 10.5194/acp-22-9601-2022
DO - 10.5194/acp-22-9601-2022
M3 - Article
AN - SCOPUS:85135257253
SN - 1680-7316
VL - 22
SP - 9601
EP - 9616
JO - Atmospheric Chemistry and Physics
JF - Atmospheric Chemistry and Physics
IS - 14
ER -