The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane
The ice-core record of the carbon-13 content of atmospheric methane (δ13CH4) has largely been used to constrain past changes in methane sources. The aim of this paper is to explore, for the first time, the contribution that changes in the strength of a minor methane sink―oxidation by atomic chlorine...
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American Geophysical Union
2011
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ftnerc:oai:nora.nerc.ac.uk:14068 2023-05-15T16:39:06+02:00 The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane Levine, James G. Wolff, Eric W. Jones, Anna E. Sime, Louise C. 2011 text http://nora.nerc.ac.uk/id/eprint/14068/ https://nora.nerc.ac.uk/id/eprint/14068/1/grl27756.pdf http://www.agu.org/journals/gl/gl1104/2010GL046122/ en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/14068/1/grl27756.pdf Levine, James G.; Wolff, Eric W.; Jones, Anna E. orcid:0000-0002-2040-4841 Sime, Louise C. orcid:0000-0002-9093-7926 . 2011 The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane. Geophysical Research Letters, 38 (4), L04801. 6, pp. https://doi.org/10.1029/2010GL046122 <https://doi.org/10.1029/2010GL046122> Glaciology Chemistry Atmospheric Sciences Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1029/2010GL046122 2023-02-04T19:28:57Z The ice-core record of the carbon-13 content of atmospheric methane (δ13CH4) has largely been used to constrain past changes in methane sources. The aim of this paper is to explore, for the first time, the contribution that changes in the strength of a minor methane sink―oxidation by atomic chlorine in the marine boundary layer (ClMBL)―could make to changes in δ13CH4 on glacial-interglacial timescales. Combining wind and temperature data from a variety of general circulation models with a simple formulation for the concentration of ClMBL, we find that changes in the strength of this sink, driven solely by changes in the atmospheric circulation, could have been responsible for changes in δ13CH4 of the order of 10% of the glacial-interglacial difference observed. We thus highlight the need to quantify past changes in the strength of this sink, including those relating to changes in the sea-ice source of sea salt aerosol. Article in Journal/Newspaper ice core Sea ice Natural Environment Research Council: NERC Open Research Archive Geophysical Research Letters 38 4 n/a n/a |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
topic |
Glaciology Chemistry Atmospheric Sciences |
spellingShingle |
Glaciology Chemistry Atmospheric Sciences Levine, James G. Wolff, Eric W. Jones, Anna E. Sime, Louise C. The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane |
topic_facet |
Glaciology Chemistry Atmospheric Sciences |
description |
The ice-core record of the carbon-13 content of atmospheric methane (δ13CH4) has largely been used to constrain past changes in methane sources. The aim of this paper is to explore, for the first time, the contribution that changes in the strength of a minor methane sink―oxidation by atomic chlorine in the marine boundary layer (ClMBL)―could make to changes in δ13CH4 on glacial-interglacial timescales. Combining wind and temperature data from a variety of general circulation models with a simple formulation for the concentration of ClMBL, we find that changes in the strength of this sink, driven solely by changes in the atmospheric circulation, could have been responsible for changes in δ13CH4 of the order of 10% of the glacial-interglacial difference observed. We thus highlight the need to quantify past changes in the strength of this sink, including those relating to changes in the sea-ice source of sea salt aerosol. |
format |
Article in Journal/Newspaper |
author |
Levine, James G. Wolff, Eric W. Jones, Anna E. Sime, Louise C. |
author_facet |
Levine, James G. Wolff, Eric W. Jones, Anna E. Sime, Louise C. |
author_sort |
Levine, James G. |
title |
The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane |
title_short |
The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane |
title_full |
The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane |
title_fullStr |
The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane |
title_full_unstemmed |
The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane |
title_sort |
role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane |
publisher |
American Geophysical Union |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/14068/ https://nora.nerc.ac.uk/id/eprint/14068/1/grl27756.pdf http://www.agu.org/journals/gl/gl1104/2010GL046122/ |
genre |
ice core Sea ice |
genre_facet |
ice core Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/14068/1/grl27756.pdf Levine, James G.; Wolff, Eric W.; Jones, Anna E. orcid:0000-0002-2040-4841 Sime, Louise C. orcid:0000-0002-9093-7926 . 2011 The role of atomic chlorine in glacial-interglacial changes in the carbon-13 content of atmospheric methane. Geophysical Research Letters, 38 (4), L04801. 6, pp. https://doi.org/10.1029/2010GL046122 <https://doi.org/10.1029/2010GL046122> |
op_doi |
https://doi.org/10.1029/2010GL046122 |
container_title |
Geophysical Research Letters |
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38 |
container_issue |
4 |
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n/a |
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n/a |
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1766029437266034688 |