Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps
Soils and other unconsolidated deposits in the northern circumpolar permafrost region store large amounts of soil organic carbon (SOC). This SOC is potentially vulnerable to remobilization following soil warming and permafrost thaw, but SOC stock estimates were poorly constrained and quantitative er...
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2014
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ftdoajarticles:oai:doaj.org/article:6e79a164df5b43259ac6da9f81034661 2023-05-15T14:58:05+02:00 Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps G. Hugelius J. Strauss S. Zubrzycki J. W. Harden E. A. G. Schuur C.-L. Ping L. Schirrmeister G. Grosse G. J. Michaelson C. D. Koven J. A. O'Donnell B. Elberling U. Mishra P. Camill Z. Yu J. Palmtag P. Kuhry 2014-12-01T00:00:00Z https://doi.org/10.5194/bg-11-6573-2014 https://doaj.org/article/6e79a164df5b43259ac6da9f81034661 EN eng Copernicus Publications http://www.biogeosciences.net/11/6573/2014/bg-11-6573-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6573-2014 https://doaj.org/article/6e79a164df5b43259ac6da9f81034661 Biogeosciences, Vol 11, Iss 23, Pp 6573-6593 (2014) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/bg-11-6573-2014 2022-12-31T00:41:48Z Soils and other unconsolidated deposits in the northern circumpolar permafrost region store large amounts of soil organic carbon (SOC). This SOC is potentially vulnerable to remobilization following soil warming and permafrost thaw, but SOC stock estimates were poorly constrained and quantitative error estimates were lacking. This study presents revised estimates of permafrost SOC stocks, including quantitative uncertainty estimates, in the 0–3 m depth range in soils as well as for sediments deeper than 3 m in deltaic deposits of major rivers and in the Yedoma region of Siberia and Alaska. Revised estimates are based on significantly larger databases compared to previous studies. Despite this there is evidence of significant remaining regional data gaps. Estimates remain particularly poorly constrained for soils in the High Arctic region and physiographic regions with thin sedimentary overburden (mountains, highlands and plateaus) as well as for deposits below 3 m depth in deltas and the Yedoma region. While some components of the revised SOC stocks are similar in magnitude to those previously reported for this region, there are substantial differences in other components, including the fraction of perennially frozen SOC. Upscaled based on regional soil maps, estimated permafrost region SOC stocks are 217 ± 12 and 472 ± 27 Pg for the 0–0.3 and 0–1 m soil depths, respectively (±95% confidence intervals). Storage of SOC in 0–3 m of soils is estimated to 1035 ± 150 Pg. Of this, 34 ± 16 Pg C is stored in poorly developed soils of the High Arctic. Based on generalized calculations, storage of SOC below 3 m of surface soils in deltaic alluvium of major Arctic rivers is estimated as 91 ± 52 Pg. In the Yedoma region, estimated SOC stocks below 3 m depth are 181 ± 54 Pg, of which 74 ± 20 Pg is stored in intact Yedoma (late Pleistocene ice- and organic-rich silty sediments) with the remainder in refrozen thermokarst deposits. Total estimated SOC storage for the permafrost region is ∼1300 Pg with an uncertainty range of ... Article in Journal/Newspaper Arctic Ice permafrost Thermokarst Alaska Siberia Directory of Open Access Journals: DOAJ Articles Arctic Biogeosciences 11 23 6573 6593 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 G. Hugelius J. Strauss S. Zubrzycki J. W. Harden E. A. G. Schuur C.-L. Ping L. Schirrmeister G. Grosse G. J. Michaelson C. D. Koven J. A. O'Donnell B. Elberling U. Mishra P. Camill Z. Yu J. Palmtag P. Kuhry Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Soils and other unconsolidated deposits in the northern circumpolar permafrost region store large amounts of soil organic carbon (SOC). This SOC is potentially vulnerable to remobilization following soil warming and permafrost thaw, but SOC stock estimates were poorly constrained and quantitative error estimates were lacking. This study presents revised estimates of permafrost SOC stocks, including quantitative uncertainty estimates, in the 0–3 m depth range in soils as well as for sediments deeper than 3 m in deltaic deposits of major rivers and in the Yedoma region of Siberia and Alaska. Revised estimates are based on significantly larger databases compared to previous studies. Despite this there is evidence of significant remaining regional data gaps. Estimates remain particularly poorly constrained for soils in the High Arctic region and physiographic regions with thin sedimentary overburden (mountains, highlands and plateaus) as well as for deposits below 3 m depth in deltas and the Yedoma region. While some components of the revised SOC stocks are similar in magnitude to those previously reported for this region, there are substantial differences in other components, including the fraction of perennially frozen SOC. Upscaled based on regional soil maps, estimated permafrost region SOC stocks are 217 ± 12 and 472 ± 27 Pg for the 0–0.3 and 0–1 m soil depths, respectively (±95% confidence intervals). Storage of SOC in 0–3 m of soils is estimated to 1035 ± 150 Pg. Of this, 34 ± 16 Pg C is stored in poorly developed soils of the High Arctic. Based on generalized calculations, storage of SOC below 3 m of surface soils in deltaic alluvium of major Arctic rivers is estimated as 91 ± 52 Pg. In the Yedoma region, estimated SOC stocks below 3 m depth are 181 ± 54 Pg, of which 74 ± 20 Pg is stored in intact Yedoma (late Pleistocene ice- and organic-rich silty sediments) with the remainder in refrozen thermokarst deposits. Total estimated SOC storage for the permafrost region is ∼1300 Pg with an uncertainty range of ... |
format |
Article in Journal/Newspaper |
author |
G. Hugelius J. Strauss S. Zubrzycki J. W. Harden E. A. G. Schuur C.-L. Ping L. Schirrmeister G. Grosse G. J. Michaelson C. D. Koven J. A. O'Donnell B. Elberling U. Mishra P. Camill Z. Yu J. Palmtag P. Kuhry |
author_facet |
G. Hugelius J. Strauss S. Zubrzycki J. W. Harden E. A. G. Schuur C.-L. Ping L. Schirrmeister G. Grosse G. J. Michaelson C. D. Koven J. A. O'Donnell B. Elberling U. Mishra P. Camill Z. Yu J. Palmtag P. Kuhry |
author_sort |
G. Hugelius |
title |
Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps |
title_short |
Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps |
title_full |
Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps |
title_fullStr |
Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps |
title_full_unstemmed |
Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps |
title_sort |
estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/bg-11-6573-2014 https://doaj.org/article/6e79a164df5b43259ac6da9f81034661 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Thermokarst Alaska Siberia |
genre_facet |
Arctic Ice permafrost Thermokarst Alaska Siberia |
op_source |
Biogeosciences, Vol 11, Iss 23, Pp 6573-6593 (2014) |
op_relation |
http://www.biogeosciences.net/11/6573/2014/bg-11-6573-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-6573-2014 https://doaj.org/article/6e79a164df5b43259ac6da9f81034661 |
op_doi |
https://doi.org/10.5194/bg-11-6573-2014 |
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Biogeosciences |
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11 |
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23 |
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6573 |
op_container_end_page |
6593 |
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1766330173050847232 |