Subglacial CH₄ Export From the Greenland Ice Sheet Linked to a Mid-Holocene Warm Period
Researchers found methane from Greenland’s ice-sheet bed was exported during a mid-Holocene warm period, when meltwater increased and mobilized subglacial carbon.
5 Articles
5 Articles
Subglacial CH₄ export from the Greenland Ice Sheet linked to a mid-Holocene warm period
In a new paper, an international team led by scientists from Charles University, Czechia, has brought evidence linking widespread release of methane (CH₄)—a strong greenhouse gas—from the Greenland Ice Sheet (GrIS) to a warmer period 9–4 thousand years ago. CH₄ has been detected at retreating glacier margins worldwide, raising concerns about potential climate feedbacks associated with their widespread retreat, but this is the first time that a st
Mid-Holocene retreat of the Greenland Ice Sheet indicated by subglacial methane release
Methane (CH4) emissions have been detected at glacier margins globally, with subglacial CH4 production identified beneath the Greenland Ice Sheet. Despite its potential role in carbon cycling, an assessment of the sources, production pathways and prevalence of subglacial CH4 export is lacking. Here we report on extensive sampling of 26 meltwater streams across the entire western margin of the Greenland Ice Sheet, revealing a radiocarbon age of 1…
In a new article, an international team led by scientists from Charles University, Czech Republic, provided evidence linking the widespread release of methane (CH4) – a powerful greenhouse gas – from the Greenland ice cap (GRIS) to a warmer period there are 9 to 4,000 [...]
An international team of scientists led by Marek Stibal and his cryospheric ecology team (CryoEco) from the Faculty of Science, Charles University, has provided evidence in a new study that the origin of methane released from beneath the Greenland Ice Sheet is the decomposition of organic matter accumulated during a warmer period that ended about four thousand years ago. The results of the study thus show that the Greenland Ice Sheet is very sen…
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