Atmospheric constraints on the methane emissions from the East Siberian Shelf
Subsea permafrost and hydrates in the East Siberian Arctic Shelf (ESAS) constitute a substantial carbon pool, and a potentially large source of methane to the atmosphere. Previous studies based on interpolated oceanographic campaigns estimated atmospheric emissions from this area at 8–17 TgCH4 yr−1....
Published in: | Atmospheric Chemistry and Physics |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00043819 2023-05-15T15:06:42+02:00 Atmospheric constraints on the methane emissions from the East Siberian Shelf Berchet, Antoine Bousquet, Philippe Pison, Isabelle Locatelli, Robin Chevallier, Frédéric Paris, Jean-Daniel Dlugokencky, Ed J. Laurila, Tuomas Hatakka, Juha Viisanen, Yrjo Worthy, Doug E. J. Nisbet, Euan Fisher, Rebecca France, James Lowry, David Ivakhov, Viktor Hermansen, Ove 2016-03 electronic https://doi.org/10.5194/acp-16-4147-2016 https://noa.gwlb.de/receive/cop_mods_00043819 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043439/acp-16-4147-2016.pdf https://acp.copernicus.org/articles/16/4147/2016/acp-16-4147-2016.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-16-4147-2016 https://noa.gwlb.de/receive/cop_mods_00043819 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043439/acp-16-4147-2016.pdf https://acp.copernicus.org/articles/16/4147/2016/acp-16-4147-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/acp-16-4147-2016 2022-02-08T22:40:22Z Subsea permafrost and hydrates in the East Siberian Arctic Shelf (ESAS) constitute a substantial carbon pool, and a potentially large source of methane to the atmosphere. Previous studies based on interpolated oceanographic campaigns estimated atmospheric emissions from this area at 8–17 TgCH4 yr−1. Here, we propose insights based on atmospheric observations to evaluate these estimates. The comparison of high-resolution simulations of atmospheric methane mole fractions to continuous methane observations during the whole year 2012 confirms the high variability and heterogeneity of the methane releases from ESAS. A reference scenario with ESAS emissions of 8 TgCH4 yr−1, in the lower part of previously estimated emissions, is found to largely overestimate atmospheric observations in winter, likely related to overestimated methane leakage through sea ice. In contrast, in summer, simulations are more consistent with observations. Based on a comprehensive statistical analysis of the observations and of the simulations, annual methane emissions from ESAS are estimated to range from 0.0 to 4.5 TgCH4 yr−1. Isotopic observations suggest a biogenic origin (either terrestrial or marine) of the methane in air masses originating from ESAS during late summer 2008 and 2009. Article in Journal/Newspaper Arctic Ice permafrost Sea ice Niedersächsisches Online-Archiv NOA Arctic East Siberian Shelf ENVELOPE(-162.267,-162.267,74.400,74.400) Atmospheric Chemistry and Physics 16 6 4147 4157 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Berchet, Antoine Bousquet, Philippe Pison, Isabelle Locatelli, Robin Chevallier, Frédéric Paris, Jean-Daniel Dlugokencky, Ed J. Laurila, Tuomas Hatakka, Juha Viisanen, Yrjo Worthy, Doug E. J. Nisbet, Euan Fisher, Rebecca France, James Lowry, David Ivakhov, Viktor Hermansen, Ove Atmospheric constraints on the methane emissions from the East Siberian Shelf |
topic_facet |
article Verlagsveröffentlichung |
description |
Subsea permafrost and hydrates in the East Siberian Arctic Shelf (ESAS) constitute a substantial carbon pool, and a potentially large source of methane to the atmosphere. Previous studies based on interpolated oceanographic campaigns estimated atmospheric emissions from this area at 8–17 TgCH4 yr−1. Here, we propose insights based on atmospheric observations to evaluate these estimates. The comparison of high-resolution simulations of atmospheric methane mole fractions to continuous methane observations during the whole year 2012 confirms the high variability and heterogeneity of the methane releases from ESAS. A reference scenario with ESAS emissions of 8 TgCH4 yr−1, in the lower part of previously estimated emissions, is found to largely overestimate atmospheric observations in winter, likely related to overestimated methane leakage through sea ice. In contrast, in summer, simulations are more consistent with observations. Based on a comprehensive statistical analysis of the observations and of the simulations, annual methane emissions from ESAS are estimated to range from 0.0 to 4.5 TgCH4 yr−1. Isotopic observations suggest a biogenic origin (either terrestrial or marine) of the methane in air masses originating from ESAS during late summer 2008 and 2009. |
format |
Article in Journal/Newspaper |
author |
Berchet, Antoine Bousquet, Philippe Pison, Isabelle Locatelli, Robin Chevallier, Frédéric Paris, Jean-Daniel Dlugokencky, Ed J. Laurila, Tuomas Hatakka, Juha Viisanen, Yrjo Worthy, Doug E. J. Nisbet, Euan Fisher, Rebecca France, James Lowry, David Ivakhov, Viktor Hermansen, Ove |
author_facet |
Berchet, Antoine Bousquet, Philippe Pison, Isabelle Locatelli, Robin Chevallier, Frédéric Paris, Jean-Daniel Dlugokencky, Ed J. Laurila, Tuomas Hatakka, Juha Viisanen, Yrjo Worthy, Doug E. J. Nisbet, Euan Fisher, Rebecca France, James Lowry, David Ivakhov, Viktor Hermansen, Ove |
author_sort |
Berchet, Antoine |
title |
Atmospheric constraints on the methane emissions from the East Siberian Shelf |
title_short |
Atmospheric constraints on the methane emissions from the East Siberian Shelf |
title_full |
Atmospheric constraints on the methane emissions from the East Siberian Shelf |
title_fullStr |
Atmospheric constraints on the methane emissions from the East Siberian Shelf |
title_full_unstemmed |
Atmospheric constraints on the methane emissions from the East Siberian Shelf |
title_sort |
atmospheric constraints on the methane emissions from the east siberian shelf |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/acp-16-4147-2016 https://noa.gwlb.de/receive/cop_mods_00043819 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043439/acp-16-4147-2016.pdf https://acp.copernicus.org/articles/16/4147/2016/acp-16-4147-2016.pdf |
long_lat |
ENVELOPE(-162.267,-162.267,74.400,74.400) |
geographic |
Arctic East Siberian Shelf |
geographic_facet |
Arctic East Siberian Shelf |
genre |
Arctic Ice permafrost Sea ice |
genre_facet |
Arctic Ice permafrost Sea ice |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-16-4147-2016 https://noa.gwlb.de/receive/cop_mods_00043819 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043439/acp-16-4147-2016.pdf https://acp.copernicus.org/articles/16/4147/2016/acp-16-4147-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-16-4147-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
6 |
container_start_page |
4147 |
op_container_end_page |
4157 |
_version_ |
1766338256987750400 |