Dissolved organic carbon (DOC) in Arctic ground ice, from northwest Canada, east Siberia, and Alaska

Thermal permafrost degradation and coastal erosion in the Arctic remobilize substantial amounts of organic carbon (OC) and nutrients which have accumulated in late Pleistocene and Holocene unconsolidated deposits. Permafrost vulnerability to thaw subsidence, collapsing coastlines and irreversible landscape change are largely due to the presence of large amounts of massive ground ice such as ice wedges. However, ground ice has not, until now, been considered to be a source of dissolved organic carbon (DOC), dissolved inorganic carbon (DIC) and other elements which are important for ecosystems and carbon cycling. Here we show, using biogeochemical data from a large number of different ice bodies throughout the Arctic, that ice wedges have the greatest potential for DOC storage, with a maximum of 28.6 mg/L (mean: 9.6 mg/L). […]

Data and Resources

Dataset extent

Map data © OpenStreetMap contributors
Source https://doi.pangaea.de/10.1594/PANGAEA.846074
Version 1.0
Citation None
Authors
  • Author Name: Michael Fritz
Temporal coverage
  • Temporal coverage start: 2007-08-22T00:00:00
Spatial coverage { "coordinates": [ [ [ -138.31834, 65.03 ], [ -138.31834, 73.6 ], [ 117.17, 73.6 ], [ 117.17, 65.03 ], [ -138.31834, 65.03 ] ] ], "type": "Polygon" }
Station research-station-samoylov-island
Collaborator
Variable measured
  • Variable name: Event label
Measurement Technique
    Date published 2015-05-08
    Date modified
    Status
    Publisher
    • Publisher name: PANGAEA  Publisher URL: https://www.pangaea.de/
    Provider
    License https://creativecommons.org/licenses/by/3.0/