A renewed rise in global HCFC-141b emissions between 2017-2021.

Autor: Western LM; Global Monitoring Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, USA.; School of Chemistry, University of Bristol, Bristol, UK., Redington AL; Hadley Centre, Met Office, Exeter, UK., Manning AJ; Hadley Centre, Met Office, Exeter, UK., Trudinger CM; Climate Science Centre, CSIRO Oceans and Atmosphere, Aspendale, Victoria, Australia., Hu L; Global Monitoring Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, USA.; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA., Henne S; Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland., Fang X; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, China., Kuijpers LJM; A/gent b.v. Consultancy, Venlo, Netherlands., Theodoridi C; Natural Resources Defense Council, Washington, DC, USA., Godwin DS; Stratospheric Protection Division, Environmental Protection Agency, Washington, DC, USA., Arduini J; Department of Pure and Applied Sciences, University of Urbino, Urbino, Italy., Dunse B; Climate Science Centre, CSIRO Oceans and Atmosphere, Aspendale, Victoria, Australia., Engel A; Institute for Atmospheric and Environmental Science, Goethe University Frankfurt, Frankfurt am Main, Germany., Fraser PJ; Climate Science Centre, CSIRO Oceans and Atmosphere, Aspendale, Victoria, Australia., Harth CM; Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA., Krummel PB; Climate Science Centre, CSIRO Oceans and Atmosphere, Aspendale, Victoria, Australia., Maione M; Department of Pure and Applied Sciences, University of Urbino, Urbino, Italy., Mühle J; Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA., O'Doherty S; School of Chemistry, University of Bristol, Bristol, UK., Park H; Department of Oceanography, Kyungpook National University, Daegu, Republic of Korea., Park S; Department of Oceanography, Kyungpook National University, Daegu, Republic of Korea., Reimann S; Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland., Salameh PK; Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA., Say D; School of Chemistry, University of Bristol, Bristol, UK., Schmidt R; Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA., Schuck T; Institute for Atmospheric and Environmental Science, Goethe University Frankfurt, Frankfurt am Main, Germany., Siso C; Global Monitoring Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, USA.; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA., Stanley KM; Institute for Atmospheric and Environmental Science, Goethe University Frankfurt, Frankfurt am Main, Germany., Vimont I; Global Monitoring Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, USA.; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA., Vollmer MK; Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland., Young D; School of Chemistry, University of Bristol, Bristol, UK., Prinn RG; Center for Global Change Science, Massachusetts Institute of Technology, Cambridge, MA, USA., Weiss RF; Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA., Montzka SA; Global Monitoring Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, USA., Rigby M; School of Chemistry, University of Bristol, Bristol, UK.
Jazyk: angličtina
Zdroj: Atmospheric chemistry and physics [Atmos Chem Phys] 2022 Jul 28; Vol. 22 (14), pp. 9601-9616.
DOI: 10.5194/acp-22-9601-2022
Abstrakt: Global emissions of the ozone-depleting gas HCFC-141b (1,1-dichloro-1-fluoroethane, CH 3 CCl 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 Ggyr -1 , compared to a mean global increase of 3.0 ± 1.2 Ggyr -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.
Competing Interests: Competing interests. The contact author has declared that none of the authors has any competing interests.
Databáze: MEDLINE
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