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...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/203008 2023-07-23T04:19:34+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. Rockmann, T. van der Veen, C. Bönisch, H. Engel, A. Mills, G.P. Newland, M.J. Oram, D.E. Reeves, C.E. Sturges, W.T. Marine and Atmospheric Research Sub Algemeen Marine & Atmospheric Res Sub Atmospheric physics and chemistry 2010 image/pdf https://dspace.library.uu.nl/handle/1874/203008 en eng 1680-7316 https://dspace.library.uu.nl/handle/1874/203008 info:eu-repo/semantics/OpenAccess Article 2010 ftunivutrecht 2023-07-01T23:48:24Z 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. Article in Journal/Newspaper Greenland Utrecht University Repository Greenland |
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Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
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. |
author2 |
Marine and Atmospheric Research Sub Algemeen Marine & Atmospheric Res Sub Atmospheric physics and chemistry |
format |
Article in Journal/Newspaper |
author |
Laube, J.C. Martinerie, P. Witrant, E. Blunier, T. Schwander, J. Brenninkmeijer, C.A.M. Schuck, T.J. Bolder, M. Rockmann, T. van der 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. Rockmann, T. van der 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. Rockmann, T. van der 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 |
2010 |
url |
https://dspace.library.uu.nl/handle/1874/203008 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
1680-7316 https://dspace.library.uu.nl/handle/1874/203008 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772182798368505856 |