The isotopic record of Northern Hemisphere atmospheric carbon monoxide since 1950: Implications for the CO budget
We present a 60-year record of the stable isotopes of atmospheric carbon monoxide (CO) from firn air samples collected under the framework of the North Greenland Eemian Ice Drilling (NEEM) project. CO concentration, δ 13C, and δ 18O of CO were measured by gas chromatography/isotope ratio mass spectr...
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Gottingen, Copernicus GmbH
2022
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ftinfoscience:oai:infoscience.epfl.ch:298390 2023-05-15T16:29:50+02:00 The isotopic record of Northern Hemisphere atmospheric carbon monoxide since 1950: Implications for the CO budget Wang, Z. Chappellaz, J. Martinerie, P. Park, K. Petrenko, V. Witrant, E. Emmons, L. K. Blunier, T. Brenninkmeijer, C. a. M. Mak, J. E. 2022-11-23T16:12:05Z https://doi.org/10.5194/acp-12-4365-2012 https://infoscience.epfl.ch/record/298390/files/acp-12-4365-2012.pdf http://infoscience.epfl.ch/record/298390 unknown Gottingen, Copernicus GmbH doi:10.5194/acp-12-4365-2012 isi:000304672000001 https://infoscience.epfl.ch/record/298390/files/acp-12-4365-2012.pdf http://infoscience.epfl.ch/record/298390 http://infoscience.epfl.ch/record/298390 Text 2022 ftinfoscience https://doi.org/10.5194/acp-12-4365-2012 2023-02-13T23:12:34Z We present a 60-year record of the stable isotopes of atmospheric carbon monoxide (CO) from firn air samples collected under the framework of the North Greenland Eemian Ice Drilling (NEEM) project. CO concentration, δ 13C, and δ 18O of CO were measured by gas chromatography/isotope ratio mass spectrometry (gc-IRMS) from trapped gases in the firn. We applied LGGE-GIPSA firn air models (Witrant et al., 2011) to correlate gas age with firn air depth and then reconstructed the trend of atmospheric CO and its stable isotopic composition at high northern latitudes since 1950. The most probable firn air model scenarios show that δ 13C decreased slightly from-25.8% in 1950 to-26.4% in 2000, then decreased more significantly to-27.2% in 2008. δ18O decreased more regularly from 9.8% in 1950 to 7.1% in 2008. Those same scenarios show CO concentration increased gradually from 1950 and peaked in the late 1970s, followed by a gradual decrease to present day values (Petrenko et al., 2012). Results from an isotope mass balance model indicate that a slight increase, followed by a large reduction, in CO derived from fossil fuel combustion has occurred since 1950. The reduction of CO emission from fossil fuel combustion after the mid-1970s is the most plausible mechanism for the drop of CO concentration during this time. Fossil fuel CO emissions decreased as a result of the implementation of catalytic converters and the relative growth of diesel engines, in spite of the global vehicle fleet size having grown several fold over the same time period. © 2012 Author(s). Text Greenland North Greenland EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Greenland Atmospheric Chemistry and Physics 12 10 4365 4377 |
institution |
Open Polar |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
op_collection_id |
ftinfoscience |
language |
unknown |
description |
We present a 60-year record of the stable isotopes of atmospheric carbon monoxide (CO) from firn air samples collected under the framework of the North Greenland Eemian Ice Drilling (NEEM) project. CO concentration, δ 13C, and δ 18O of CO were measured by gas chromatography/isotope ratio mass spectrometry (gc-IRMS) from trapped gases in the firn. We applied LGGE-GIPSA firn air models (Witrant et al., 2011) to correlate gas age with firn air depth and then reconstructed the trend of atmospheric CO and its stable isotopic composition at high northern latitudes since 1950. The most probable firn air model scenarios show that δ 13C decreased slightly from-25.8% in 1950 to-26.4% in 2000, then decreased more significantly to-27.2% in 2008. δ18O decreased more regularly from 9.8% in 1950 to 7.1% in 2008. Those same scenarios show CO concentration increased gradually from 1950 and peaked in the late 1970s, followed by a gradual decrease to present day values (Petrenko et al., 2012). Results from an isotope mass balance model indicate that a slight increase, followed by a large reduction, in CO derived from fossil fuel combustion has occurred since 1950. The reduction of CO emission from fossil fuel combustion after the mid-1970s is the most plausible mechanism for the drop of CO concentration during this time. Fossil fuel CO emissions decreased as a result of the implementation of catalytic converters and the relative growth of diesel engines, in spite of the global vehicle fleet size having grown several fold over the same time period. © 2012 Author(s). |
format |
Text |
author |
Wang, Z. Chappellaz, J. Martinerie, P. Park, K. Petrenko, V. Witrant, E. Emmons, L. K. Blunier, T. Brenninkmeijer, C. a. M. Mak, J. E. |
spellingShingle |
Wang, Z. Chappellaz, J. Martinerie, P. Park, K. Petrenko, V. Witrant, E. Emmons, L. K. Blunier, T. Brenninkmeijer, C. a. M. Mak, J. E. The isotopic record of Northern Hemisphere atmospheric carbon monoxide since 1950: Implications for the CO budget |
author_facet |
Wang, Z. Chappellaz, J. Martinerie, P. Park, K. Petrenko, V. Witrant, E. Emmons, L. K. Blunier, T. Brenninkmeijer, C. a. M. Mak, J. E. |
author_sort |
Wang, Z. |
title |
The isotopic record of Northern Hemisphere atmospheric carbon monoxide since 1950: Implications for the CO budget |
title_short |
The isotopic record of Northern Hemisphere atmospheric carbon monoxide since 1950: Implications for the CO budget |
title_full |
The isotopic record of Northern Hemisphere atmospheric carbon monoxide since 1950: Implications for the CO budget |
title_fullStr |
The isotopic record of Northern Hemisphere atmospheric carbon monoxide since 1950: Implications for the CO budget |
title_full_unstemmed |
The isotopic record of Northern Hemisphere atmospheric carbon monoxide since 1950: Implications for the CO budget |
title_sort |
isotopic record of northern hemisphere atmospheric carbon monoxide since 1950: implications for the co budget |
publisher |
Gottingen, Copernicus GmbH |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-12-4365-2012 https://infoscience.epfl.ch/record/298390/files/acp-12-4365-2012.pdf http://infoscience.epfl.ch/record/298390 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Greenland |
genre_facet |
Greenland North Greenland |
op_source |
http://infoscience.epfl.ch/record/298390 |
op_relation |
doi:10.5194/acp-12-4365-2012 isi:000304672000001 https://infoscience.epfl.ch/record/298390/files/acp-12-4365-2012.pdf http://infoscience.epfl.ch/record/298390 |
op_doi |
https://doi.org/10.5194/acp-12-4365-2012 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
12 |
container_issue |
10 |
container_start_page |
4365 |
op_container_end_page |
4377 |
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1766019544726372352 |