The Deep Permafrost Carbon Pool of the Yedoma Region in Siberia and Alaska


Contact
Jens.Strauss [ at ] awi.de

Abstract

Estimates for circumpolar permafrost organic carbon (OC) storage suggest that this pool contains twice the amount of current atmospheric carbon. The Yedoma region sequestered substantial quantities of OC and is unique because its deep OC was incorporated into permafrost during Ice-Age conditions. Rapid inclusion of labile organic matter into permafrost halted decomposition and resulted in a deep long-term sink. We show that the deep frozen OC in the Yedoma region consists of two distinct major sub-reservoirs; Yedoma deposits (late Pleistocene ice- and organic-rich silty sediments) and deposits formed in thaw-lake basins (generalized as thermokarst deposits). We quantified the OC pool based on field data and extrapolation using geospatial datasets to 83 + 61/-57 Gt for Yedoma deposits and to 128 + 99/-96 Gt for thermokarst deposits. The total Yedoma region 211 + 160/-153 Gt is a substantial amount of thaw-vulnerable OC that must be accounted for in global models.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
Scopus/ISI peer-reviewed
Publication Status
Published
Eprint ID
34469
DOI 10.1002/2013GL058088

Cite as
Strauss, J. , Schirrmeister, L. , Grosse, G. , Wetterich, S. , Ulrich, M. , Herzschuh, U. and Hubberten, H. W. (2013): The Deep Permafrost Carbon Pool of the Yedoma Region in Siberia and Alaska , Geophysical Research Letters, 2013GL058088 . doi: 10.1002/2013GL058088


Download
[img]
Preview
PDF
Strauss_2013_GRL_upload.pdf

Download (77kB) | Preview
Cite this document as:

Share


Citation

Research Platforms

Campaigns


Actions
Edit Item Edit Item