Records of the δ13C of atmospheric CH4 over the last 2 centuries as recorded in Antarctic snow and ice
International audience Methane is one of the important greenhouse gases accumulating in the atmosphere today. The increased loading over the past 2 centuries is thought to be the result of increased anthropogenic emissions. Here we present records of the δ13C of CH4 in firn air from the South Pole a...
Published in: | Global Biogeochemical Cycles |
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Online Access: | https://insu.hal.science/insu-00374935 https://insu.hal.science/insu-00374935/document https://insu.hal.science/insu-00374935/file/2004GB002408.pdf https://doi.org/10.1029/2004GB002408 |
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ftunivsavoie:oai:HAL:insu-00374935v1 2024-04-28T07:58:52+00:00 Records of the δ13C of atmospheric CH4 over the last 2 centuries as recorded in Antarctic snow and ice Sowers, Todd Bernard, Sophie Aballain, Olivier Chappellaz, Jérôme Barnola, Jean-Marc Marik, Thomas Department of Geosciences and the Earth and Environmental Systems Institute Pennsylvania State University (Penn State) Penn State System-Penn State System Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institute of Environmental Physics Heidelberg (IUP) Universität Heidelberg Heidelberg = Heidelberg University 2005 https://insu.hal.science/insu-00374935 https://insu.hal.science/insu-00374935/document https://insu.hal.science/insu-00374935/file/2004GB002408.pdf https://doi.org/10.1029/2004GB002408 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2004GB002408 insu-00374935 https://insu.hal.science/insu-00374935 https://insu.hal.science/insu-00374935/document https://insu.hal.science/insu-00374935/file/2004GB002408.pdf doi:10.1029/2004GB002408 info:eu-repo/semantics/OpenAccess ISSN: 0886-6236 EISSN: 1944-8224 Global Biogeochemical Cycles https://insu.hal.science/insu-00374935 Global Biogeochemical Cycles, 2005, 19, pp.GB2002. ⟨10.1029/2004GB002408⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2005 ftunivsavoie https://doi.org/10.1029/2004GB002408 2024-04-11T00:42:33Z International audience Methane is one of the important greenhouse gases accumulating in the atmosphere today. The increased loading over the past 2 centuries is thought to be the result of increased anthropogenic emissions. Here we present records of the δ13C of CH4 in firn air from the South Pole and in trapped bubbles in a short ice core from Siple Dome, Antarctica, that help constrain historical emissions of various sources throughout the last 2 centuries. Using two firn air samplings in 1995 and 2001 we calculate that δ13CH4 has increased by an average of 0.06 ± 0.02‰/yr over the 6 years between samplings. Our ice core results suggest the δ13C of atmospheric CH4 has increased by 1.8 ± 0.2‰ between 1820 A.D. and 2001 AD. The δ13CH4 changes in both data sets are the result of an increase in the relative proportion of CH4 sources with elevated 13C/12C isotope ratios. One explanation for observed trends involves a 16 Tg/yr increase in CH4 emissions associated with biomass burning over the past 2 centuries. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core South pole South pole Université Savoie Mont Blanc: HAL Global Biogeochemical Cycles 19 2 n/a n/a |
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Open Polar |
collection |
Université Savoie Mont Blanc: HAL |
op_collection_id |
ftunivsavoie |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Sowers, Todd Bernard, Sophie Aballain, Olivier Chappellaz, Jérôme Barnola, Jean-Marc Marik, Thomas Records of the δ13C of atmospheric CH4 over the last 2 centuries as recorded in Antarctic snow and ice |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Methane is one of the important greenhouse gases accumulating in the atmosphere today. The increased loading over the past 2 centuries is thought to be the result of increased anthropogenic emissions. Here we present records of the δ13C of CH4 in firn air from the South Pole and in trapped bubbles in a short ice core from Siple Dome, Antarctica, that help constrain historical emissions of various sources throughout the last 2 centuries. Using two firn air samplings in 1995 and 2001 we calculate that δ13CH4 has increased by an average of 0.06 ± 0.02‰/yr over the 6 years between samplings. Our ice core results suggest the δ13C of atmospheric CH4 has increased by 1.8 ± 0.2‰ between 1820 A.D. and 2001 AD. The δ13CH4 changes in both data sets are the result of an increase in the relative proportion of CH4 sources with elevated 13C/12C isotope ratios. One explanation for observed trends involves a 16 Tg/yr increase in CH4 emissions associated with biomass burning over the past 2 centuries. |
author2 |
Department of Geosciences and the Earth and Environmental Systems Institute Pennsylvania State University (Penn State) Penn State System-Penn State System Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institute of Environmental Physics Heidelberg (IUP) Universität Heidelberg Heidelberg = Heidelberg University |
format |
Article in Journal/Newspaper |
author |
Sowers, Todd Bernard, Sophie Aballain, Olivier Chappellaz, Jérôme Barnola, Jean-Marc Marik, Thomas |
author_facet |
Sowers, Todd Bernard, Sophie Aballain, Olivier Chappellaz, Jérôme Barnola, Jean-Marc Marik, Thomas |
author_sort |
Sowers, Todd |
title |
Records of the δ13C of atmospheric CH4 over the last 2 centuries as recorded in Antarctic snow and ice |
title_short |
Records of the δ13C of atmospheric CH4 over the last 2 centuries as recorded in Antarctic snow and ice |
title_full |
Records of the δ13C of atmospheric CH4 over the last 2 centuries as recorded in Antarctic snow and ice |
title_fullStr |
Records of the δ13C of atmospheric CH4 over the last 2 centuries as recorded in Antarctic snow and ice |
title_full_unstemmed |
Records of the δ13C of atmospheric CH4 over the last 2 centuries as recorded in Antarctic snow and ice |
title_sort |
records of the δ13c of atmospheric ch4 over the last 2 centuries as recorded in antarctic snow and ice |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://insu.hal.science/insu-00374935 https://insu.hal.science/insu-00374935/document https://insu.hal.science/insu-00374935/file/2004GB002408.pdf https://doi.org/10.1029/2004GB002408 |
genre |
Antarc* Antarctic Antarctica ice core South pole South pole |
genre_facet |
Antarc* Antarctic Antarctica ice core South pole South pole |
op_source |
ISSN: 0886-6236 EISSN: 1944-8224 Global Biogeochemical Cycles https://insu.hal.science/insu-00374935 Global Biogeochemical Cycles, 2005, 19, pp.GB2002. ⟨10.1029/2004GB002408⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2004GB002408 insu-00374935 https://insu.hal.science/insu-00374935 https://insu.hal.science/insu-00374935/document https://insu.hal.science/insu-00374935/file/2004GB002408.pdf doi:10.1029/2004GB002408 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2004GB002408 |
container_title |
Global Biogeochemical Cycles |
container_volume |
19 |
container_issue |
2 |
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1797571922118049792 |