Accelerating growth of HFC-227ea (1,1,1,2,3,3,3-heptafluoropropane) in the atmosphere
We report the first measurements of 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), a substitute for ozone depleting compounds, in air samples originating from remote regions of the atmosphere and present evidence for its accelerating growth. Observed mixing ratios ranged from below 0.01 ppt in deep f...
Published in: | Atmospheric Chemistry and Physics |
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Online Access: | https://doi.org/10.5194/acp-10-5903-2010 https://www.atmos-chem-phys.net/10/5903/2010/ |
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ftcopernicus:oai:publications.copernicus.org:acp7152 2023-05-15T16:29:03+02:00 Accelerating growth of HFC-227ea (1,1,1,2,3,3,3-heptafluoropropane) in the atmosphere Laube, J. C. Martinerie, P. Witrant, E. Blunier, T. Schwander, J. Brenninkmeijer, C. A. M. Schuck, T. J. Bolder, M. Röckmann, T. Veen, C. Bönisch, H. Engel, A. Mills, G. P. Newland, M. J. Oram, D. E. Reeves, C. E. Sturges, W. T. 2018-01-15 info:eu-repo/semantics/application/pdf https://doi.org/10.5194/acp-10-5903-2010 https://www.atmos-chem-phys.net/10/5903/2010/ eng eng info:eu-repo/grantAgreement/EC/FP7/226365 doi:10.5194/acp-10-5903-2010 https://www.atmos-chem-phys.net/10/5903/2010/ info:eu-repo/semantics/openAccess eISSN: 1680-7324 info:eu-repo/semantics/Text 2018 ftcopernicus https://doi.org/10.5194/acp-10-5903-2010 2019-12-24T09:57:20Z We report the first measurements of 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), a substitute for ozone depleting compounds, in air samples originating from remote regions of the atmosphere and present evidence for its accelerating growth. Observed mixing ratios ranged from below 0.01 ppt in deep firn air to 0.59 ppt in the current northern mid-latitudinal upper troposphere. Firn air samples collected in Greenland were used to reconstruct a history of atmospheric abundance. Year-on-year increases were deduced, with acceleration in the growth rate from 0.029 ppt per year in 2000 to 0.056 ppt per year in 2007. Upper tropospheric air samples provide evidence for a continuing growth until late 2009. Furthermore we calculated a stratospheric lifetime of 370 years from measurements of air samples collected on board high altitude aircraft and balloons. Emission estimates were determined from the reconstructed atmospheric trend and suggest that current "bottom-up" estimates of global emissions for 2005 are too high by a factor of three. Other/Unknown Material Greenland Copernicus Publications: E-Journals Greenland Atmospheric Chemistry and Physics 10 13 5903 5910 |
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Open Polar |
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Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
We report the first measurements of 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), a substitute for ozone depleting compounds, in air samples originating from remote regions of the atmosphere and present evidence for its accelerating growth. Observed mixing ratios ranged from below 0.01 ppt in deep firn air to 0.59 ppt in the current northern mid-latitudinal upper troposphere. Firn air samples collected in Greenland were used to reconstruct a history of atmospheric abundance. Year-on-year increases were deduced, with acceleration in the growth rate from 0.029 ppt per year in 2000 to 0.056 ppt per year in 2007. Upper tropospheric air samples provide evidence for a continuing growth until late 2009. Furthermore we calculated a stratospheric lifetime of 370 years from measurements of air samples collected on board high altitude aircraft and balloons. Emission estimates were determined from the reconstructed atmospheric trend and suggest that current "bottom-up" estimates of global emissions for 2005 are too high by a factor of three. |
format |
Other/Unknown Material |
author |
Laube, J. C. Martinerie, P. Witrant, E. Blunier, T. Schwander, J. Brenninkmeijer, C. A. M. Schuck, T. J. Bolder, M. Röckmann, T. Veen, C. Bönisch, H. Engel, A. Mills, G. P. Newland, M. J. Oram, D. E. Reeves, C. E. Sturges, W. T. |
spellingShingle |
Laube, J. C. Martinerie, P. Witrant, E. Blunier, T. Schwander, J. Brenninkmeijer, C. A. M. Schuck, T. J. Bolder, M. Röckmann, T. Veen, C. Bönisch, H. Engel, A. Mills, G. P. Newland, M. J. Oram, D. E. Reeves, C. E. Sturges, W. T. Accelerating growth of HFC-227ea (1,1,1,2,3,3,3-heptafluoropropane) in the atmosphere |
author_facet |
Laube, J. C. Martinerie, P. Witrant, E. Blunier, T. Schwander, J. Brenninkmeijer, C. A. M. Schuck, T. J. Bolder, M. Röckmann, T. Veen, C. Bönisch, H. Engel, A. Mills, G. P. Newland, M. J. Oram, D. E. Reeves, C. E. Sturges, W. T. |
author_sort |
Laube, J. C. |
title |
Accelerating growth of HFC-227ea (1,1,1,2,3,3,3-heptafluoropropane) in the atmosphere |
title_short |
Accelerating growth of HFC-227ea (1,1,1,2,3,3,3-heptafluoropropane) in the atmosphere |
title_full |
Accelerating growth of HFC-227ea (1,1,1,2,3,3,3-heptafluoropropane) in the atmosphere |
title_fullStr |
Accelerating growth of HFC-227ea (1,1,1,2,3,3,3-heptafluoropropane) in the atmosphere |
title_full_unstemmed |
Accelerating growth of HFC-227ea (1,1,1,2,3,3,3-heptafluoropropane) in the atmosphere |
title_sort |
accelerating growth of hfc-227ea (1,1,1,2,3,3,3-heptafluoropropane) in the atmosphere |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-10-5903-2010 https://www.atmos-chem-phys.net/10/5903/2010/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
eISSN: 1680-7324 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/226365 doi:10.5194/acp-10-5903-2010 https://www.atmos-chem-phys.net/10/5903/2010/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-10-5903-2010 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
10 |
container_issue |
13 |
container_start_page |
5903 |
op_container_end_page |
5910 |
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1766018740530446336 |