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

Abstract During a 2016 field expedition to the West Greenland Ice Sheet, a striking observation of significantly elevated CH4 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 G...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jesper Riis Christiansen, Christian Juncher Jørgensen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Subglacial Environments Atmospheric Background Concentration Flux Rates Direct Emissions Discharge Point Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4892bad9619b4cd188dd0f74ac18734b
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4892bad9619b4cd188dd0f74ac18734b
record_format	dspace
spelling	oai:doaj.org-article:4892bad9619b4cd188dd0f74ac18734b2021-12-02T15:09:08ZFirst observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet10.1038/s41598-018-35054-72045-2322https://doaj.org/article/4892bad9619b4cd188dd0f74ac18734b2018-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-35054-7https://doaj.org/toc/2045-2322Abstract During a 2016 field expedition to the West Greenland Ice Sheet, a striking observation of significantly elevated CH4 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 CH4 flux rate through the discharge point was estimated to be 3.1 to 134 g CH4 hr−1. These measurements are the first observations of direct emissions of CH4 from the subglacial environment under the Greenlandic Ice Sheet to the atmosphere and indicate a novel emission pathway of CH4 that is currently a non-quantified component of the Arctic CH4 budget.Jesper Riis ChristiansenChristian Juncher JørgensenNature PortfolioarticleSubglacial EnvironmentsAtmospheric Background ConcentrationFlux RatesDirect EmissionsDischarge PointMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-6 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Subglacial Environments Atmospheric Background Concentration Flux Rates Direct Emissions Discharge Point Medicine R Science Q
spellingShingle	Subglacial Environments Atmospheric Background Concentration Flux Rates Direct Emissions Discharge Point Medicine R Science Q Jesper Riis Christiansen Christian Juncher Jørgensen First observation of direct methane emission to the atmosphere from the subglacial domain of the Greenland Ice Sheet
description	Abstract During a 2016 field expedition to the West Greenland Ice Sheet, a striking observation of significantly elevated CH4 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 CH4 flux rate through the discharge point was estimated to be 3.1 to 134 g CH4 hr−1. These measurements are the first observations of direct emissions of CH4 from the subglacial environment under the Greenlandic Ice Sheet to the atmosphere and indicate a novel emission pathway of CH4 that is currently a non-quantified component of the Arctic CH4 budget.
format	article
author	Jesper Riis Christiansen Christian Juncher Jørgensen
author_facet	Jesper Riis Christiansen Christian Juncher Jørgensen
author_sort	Jesper Riis Christiansen
title	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_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_sort	first observation of direct methane emission to the atmosphere from the subglacial domain of the greenland ice sheet
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/4892bad9619b4cd188dd0f74ac18734b
work_keys_str_mv	AT jesperriischristiansen firstobservationofdirectmethaneemissiontotheatmospherefromthesubglacialdomainofthegreenlandicesheet AT christianjuncherjørgensen firstobservationofdirectmethaneemissiontotheatmospherefromthesubglacialdomainofthegreenlandicesheet
_version_	1718387871854886912

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

Ejemplares similares