Atmospheric constraints on the methane emissions from the East Siberian Shelf
International audience 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 a...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2016
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Online Access: | https://hal.science/hal-02950515 https://hal.science/hal-02950515/document https://hal.science/hal-02950515/file/acp-16-4147-2016.pdf https://doi.org/10.5194/ACP-16-4147-2016 |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Berchet, Antoine Bousquet, Philippe Pison, Isabelle Locatelli, Robin Chevallier, Frederic Paris, Jean-Daniel Dlugokencky, Ed Laurila, Tuomas Hatakka, Juha Viisanen, Yrjo Worthy, Doug 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 |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience 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 TgCH 4 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 TgCH 4 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 TgCH 4 yr −1. Isotopic observations suggest a bio-genic origin (either terrestrial or marine) of the methane in air masses originating from ESAS during late summer 2008 and 2009. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) ICOS-RAMCES (ICOS-RAMCES) NOAA Earth System Research Laboratory (ESRL) National Oceanic and Atmospheric Administration (NOAA) Finnish Meteorological Institute (FMI) Environment Canada (Toronto) Royal Holloway University of London (RHUL) A. I. Voeikov Main Geophysical Observatory (MGO) Norwegian Institute for Air Research (NILU) |
format |
Article in Journal/Newspaper |
author |
Berchet, Antoine Bousquet, Philippe Pison, Isabelle Locatelli, Robin Chevallier, Frederic Paris, Jean-Daniel Dlugokencky, Ed Laurila, Tuomas Hatakka, Juha Viisanen, Yrjo Worthy, Doug Nisbet, Euan Fisher, Rebecca France, James Lowry, David Ivakhov, Viktor Hermansen, Ove |
author_facet |
Berchet, Antoine Bousquet, Philippe Pison, Isabelle Locatelli, Robin Chevallier, Frederic Paris, Jean-Daniel Dlugokencky, Ed Laurila, Tuomas Hatakka, Juha Viisanen, Yrjo Worthy, Doug 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 |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/hal-02950515 https://hal.science/hal-02950515/document https://hal.science/hal-02950515/file/acp-16-4147-2016.pdf https://doi.org/10.5194/ACP-16-4147-2016 |
genre |
Ice permafrost Sea ice |
genre_facet |
Ice permafrost Sea ice |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-02950515 Atmospheric Chemistry and Physics, 2016, 16 (6), pp.4147-4157. ⟨10.5194/ACP-16-4147-2016⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/ACP-16-4147-2016 hal-02950515 https://hal.science/hal-02950515 https://hal.science/hal-02950515/document https://hal.science/hal-02950515/file/acp-16-4147-2016.pdf doi:10.5194/ACP-16-4147-2016 |
op_rights |
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 |
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1810449264234463232 |
spelling |
ftceafr:oai:HAL:hal-02950515v1 2024-09-15T18:11:41+00:00 Atmospheric constraints on the methane emissions from the East Siberian Shelf Berchet, Antoine Bousquet, Philippe Pison, Isabelle Locatelli, Robin Chevallier, Frederic Paris, Jean-Daniel Dlugokencky, Ed Laurila, Tuomas Hatakka, Juha Viisanen, Yrjo Worthy, Doug Nisbet, Euan Fisher, Rebecca France, James Lowry, David Ivakhov, Viktor Hermansen, Ove Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation INVerse pour les mesures atmosphériques et SATellitaires (SATINV) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) ICOS-RAMCES (ICOS-RAMCES) NOAA Earth System Research Laboratory (ESRL) National Oceanic and Atmospheric Administration (NOAA) Finnish Meteorological Institute (FMI) Environment Canada (Toronto) Royal Holloway University of London (RHUL) A. I. Voeikov Main Geophysical Observatory (MGO) Norwegian Institute for Air Research (NILU) 2016 https://hal.science/hal-02950515 https://hal.science/hal-02950515/document https://hal.science/hal-02950515/file/acp-16-4147-2016.pdf https://doi.org/10.5194/ACP-16-4147-2016 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/ACP-16-4147-2016 hal-02950515 https://hal.science/hal-02950515 https://hal.science/hal-02950515/document https://hal.science/hal-02950515/file/acp-16-4147-2016.pdf doi:10.5194/ACP-16-4147-2016 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-02950515 Atmospheric Chemistry and Physics, 2016, 16 (6), pp.4147-4157. ⟨10.5194/ACP-16-4147-2016⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2016 ftceafr https://doi.org/10.5194/ACP-16-4147-2016 2024-07-22T13:17:57Z International audience 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 TgCH 4 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 TgCH 4 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 TgCH 4 yr −1. Isotopic observations suggest a bio-genic origin (either terrestrial or marine) of the methane in air masses originating from ESAS during late summer 2008 and 2009. Article in Journal/Newspaper Ice permafrost Sea ice HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Atmospheric Chemistry and Physics 16 6 4147 4157 |