First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet

During a 2016 field expedition to the West Greenland Ice Sheet, a striking observation of significantly elevated CH(4) concentrations of up to 15 times the background atmospheric concentration were measured directly in the air expelled with meltwater at a subglacial discharge point from the Greenlan...

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Autores principales: Christiansen, Jesper Riis, Jørgensen, Christian Juncher
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6226494/
https://www.ncbi.nlm.nih.gov/pubmed/30413774
http://dx.doi.org/10.1038/s41598-018-35054-7
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author Christiansen, Jesper Riis
Jørgensen, Christian Juncher
author_facet Christiansen, Jesper Riis
Jørgensen, Christian Juncher
author_sort Christiansen, Jesper Riis
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description During a 2016 field expedition to the West Greenland Ice Sheet, a striking observation of significantly elevated CH(4) concentrations of up to 15 times the background atmospheric concentration were measured directly in the air expelled with meltwater at a subglacial discharge point from the Greenland Ice Sheet. The range of hourly subglacial CH(4) flux rate through the discharge point was estimated to be 3.1 to 134 g CH(4) hr(−1). These measurements are the first observations of direct emissions of CH(4) from the subglacial environment under the Greenlandic Ice Sheet to the atmosphere and indicate a novel emission pathway of CH(4) that is currently a non-quantified component of the Arctic CH(4) budget.
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spelling pubmed-62264942018-11-13 First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet Christiansen, Jesper Riis Jørgensen, Christian Juncher Sci Rep Article During a 2016 field expedition to the West Greenland Ice Sheet, a striking observation of significantly elevated CH(4) concentrations of up to 15 times the background atmospheric concentration were measured directly in the air expelled with meltwater at a subglacial discharge point from the Greenland Ice Sheet. The range of hourly subglacial CH(4) flux rate through the discharge point was estimated to be 3.1 to 134 g CH(4) hr(−1). These measurements are the first observations of direct emissions of CH(4) from the subglacial environment under the Greenlandic Ice Sheet to the atmosphere and indicate a novel emission pathway of CH(4) that is currently a non-quantified component of the Arctic CH(4) budget. Nature Publishing Group UK 2018-11-09 /pmc/articles/PMC6226494/ /pubmed/30413774 http://dx.doi.org/10.1038/s41598-018-35054-7 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Christiansen, Jesper Riis
Jørgensen, Christian Juncher
First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet
title First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet
title_full First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet
title_fullStr First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet
title_full_unstemmed First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet
title_short First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet
title_sort first observation of direct methane emission to the atmosphere from the subglacial domain of the greenland ice sheet
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6226494/
https://www.ncbi.nlm.nih.gov/pubmed/30413774
http://dx.doi.org/10.1038/s41598-018-35054-7
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