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 la...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.846074 2024-09-15T17:50:45+00:00 Dissolved organic carbon (DOC) in Arctic ground ice, from northwest Canada, east Siberia, and Alaska Fritz, Michael Opel, Thomas Tanski, George Herzschuh, Ulrike Meyer, Hanno Eulenburg, Antje Lantuit, Hugues MEDIAN LATITUDE: 70.403801 * MEDIAN LONGITUDE: -172.285792 * SOUTH-BOUND LATITUDE: 65.030000 * WEST-BOUND LONGITUDE: 117.170000 * NORTH-BOUND LATITUDE: 73.600000 * EAST-BOUND LONGITUDE: -138.318340 * DATE/TIME START: 2007-08-22T00:00:00 * DATE/TIME END: 2007-08-22T00:00:00 2015 text/tab-separated-values, 1687 data points https://doi.pangaea.de/10.1594/PANGAEA.846074 https://doi.org/10.1594/PANGAEA.846074 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.846074 https://doi.org/10.1594/PANGAEA.846074 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Fritz, Michael; Opel, Thomas; Tanski, George; Herzschuh, Ulrike; Meyer, Hanno; Eulenburg, Antje; Lantuit, Hugues (2015): Dissolved organic carbon (DOC) in Arctic ground ice. The Cryosphere, 9(2), 737-752, https://doi.org/10.5194/tc-9-737-2015 AWI_PerDyn AWI Arctic Land Expedition BAR-06-1.23A BAR-06-IW1.4A BAR-06-IW1-29A BAR-06-IW1-34A BAR-06-IW3-12A BAR-06-IW4-2A Barrow Northern Alaska Bicarbonate ion Bol'shoy Lyakhovsky Island New Siberian Islands Calcium Calculated Cape Mamontov Klyk Western Laptev Sea Carbon inorganic dissolved organic Chloride Conductivity electrolytic Deuterium excess Event label FAI-IW14-U/Th FAI-IW3-U/Th FAI-IW4-U/Th FAI-IW6-U/Th FAI-IW7-U/Th Fairbanks Interior Alaska GI-2-11 GI-2-16a GI-2-20 GI-2-23 GI-2-29 GI-2-43 ground ice HAND Herschel Island Yukon Territory Canada HIWCS12-MI-02 HIWCS12-MI-03 HTCO Shimadzu TOC-V dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.84607410.5194/tc-9-737-2015 2024-07-24T02:31:33Z 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). Variation in DOC concentration is positively correlated with and explained by the concentrations and relative amounts of typically terrestrial cations such as Mg2+ and K+. DOC sequestration into ground ice was more effective during the late Pleistocene than during the Holocene, which can be explained by rapid sediment and OC accumulation, the prevalence of more easily degradable vegetation and immediate incorporation into permafrost. We assume that pristine snowmelt is able to leach considerable amounts of well-preserved and highly bioavailable DOC as well as other elements from surface sediments, which are rapidly frozen and stored in ground ice, especially in ice wedges, even before further degradation. We found that ice wedges in the Yedoma region represent a significant DOC (45.2 Tg) and DIC (33.6 Tg) pool in permafrost areas and a freshwater reservoir of 4200 km**3. This study underlines the need to discriminate between particulate OC and DOC to assess the availability and vulnerability of the permafrost carbon pool for ecosystems and climate feedback upon mobilization. Dataset Arctic Barrow Herschel Herschel Island Ice laptev Laptev Sea New Siberian Islands permafrost The Cryosphere wedge* Alaska Siberia Yukon PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(117.170000,-138.318340,73.600000,65.030000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn AWI Arctic Land Expedition BAR-06-1.23A BAR-06-IW1.4A BAR-06-IW1-29A BAR-06-IW1-34A BAR-06-IW3-12A BAR-06-IW4-2A Barrow Northern Alaska Bicarbonate ion Bol'shoy Lyakhovsky Island New Siberian Islands Calcium Calculated Cape Mamontov Klyk Western Laptev Sea Carbon inorganic dissolved organic Chloride Conductivity electrolytic Deuterium excess Event label FAI-IW14-U/Th FAI-IW3-U/Th FAI-IW4-U/Th FAI-IW6-U/Th FAI-IW7-U/Th Fairbanks Interior Alaska GI-2-11 GI-2-16a GI-2-20 GI-2-23 GI-2-29 GI-2-43 ground ice HAND Herschel Island Yukon Territory Canada HIWCS12-MI-02 HIWCS12-MI-03 HTCO Shimadzu TOC-V |
spellingShingle |
AWI_PerDyn AWI Arctic Land Expedition BAR-06-1.23A BAR-06-IW1.4A BAR-06-IW1-29A BAR-06-IW1-34A BAR-06-IW3-12A BAR-06-IW4-2A Barrow Northern Alaska Bicarbonate ion Bol'shoy Lyakhovsky Island New Siberian Islands Calcium Calculated Cape Mamontov Klyk Western Laptev Sea Carbon inorganic dissolved organic Chloride Conductivity electrolytic Deuterium excess Event label FAI-IW14-U/Th FAI-IW3-U/Th FAI-IW4-U/Th FAI-IW6-U/Th FAI-IW7-U/Th Fairbanks Interior Alaska GI-2-11 GI-2-16a GI-2-20 GI-2-23 GI-2-29 GI-2-43 ground ice HAND Herschel Island Yukon Territory Canada HIWCS12-MI-02 HIWCS12-MI-03 HTCO Shimadzu TOC-V Fritz, Michael Opel, Thomas Tanski, George Herzschuh, Ulrike Meyer, Hanno Eulenburg, Antje Lantuit, Hugues Dissolved organic carbon (DOC) in Arctic ground ice, from northwest Canada, east Siberia, and Alaska |
topic_facet |
AWI_PerDyn AWI Arctic Land Expedition BAR-06-1.23A BAR-06-IW1.4A BAR-06-IW1-29A BAR-06-IW1-34A BAR-06-IW3-12A BAR-06-IW4-2A Barrow Northern Alaska Bicarbonate ion Bol'shoy Lyakhovsky Island New Siberian Islands Calcium Calculated Cape Mamontov Klyk Western Laptev Sea Carbon inorganic dissolved organic Chloride Conductivity electrolytic Deuterium excess Event label FAI-IW14-U/Th FAI-IW3-U/Th FAI-IW4-U/Th FAI-IW6-U/Th FAI-IW7-U/Th Fairbanks Interior Alaska GI-2-11 GI-2-16a GI-2-20 GI-2-23 GI-2-29 GI-2-43 ground ice HAND Herschel Island Yukon Territory Canada HIWCS12-MI-02 HIWCS12-MI-03 HTCO Shimadzu TOC-V |
description |
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). Variation in DOC concentration is positively correlated with and explained by the concentrations and relative amounts of typically terrestrial cations such as Mg2+ and K+. DOC sequestration into ground ice was more effective during the late Pleistocene than during the Holocene, which can be explained by rapid sediment and OC accumulation, the prevalence of more easily degradable vegetation and immediate incorporation into permafrost. We assume that pristine snowmelt is able to leach considerable amounts of well-preserved and highly bioavailable DOC as well as other elements from surface sediments, which are rapidly frozen and stored in ground ice, especially in ice wedges, even before further degradation. We found that ice wedges in the Yedoma region represent a significant DOC (45.2 Tg) and DIC (33.6 Tg) pool in permafrost areas and a freshwater reservoir of 4200 km**3. This study underlines the need to discriminate between particulate OC and DOC to assess the availability and vulnerability of the permafrost carbon pool for ecosystems and climate feedback upon mobilization. |
format |
Dataset |
author |
Fritz, Michael Opel, Thomas Tanski, George Herzschuh, Ulrike Meyer, Hanno Eulenburg, Antje Lantuit, Hugues |
author_facet |
Fritz, Michael Opel, Thomas Tanski, George Herzschuh, Ulrike Meyer, Hanno Eulenburg, Antje Lantuit, Hugues |
author_sort |
Fritz, Michael |
title |
Dissolved organic carbon (DOC) in Arctic ground ice, from northwest Canada, east Siberia, and Alaska |
title_short |
Dissolved organic carbon (DOC) in Arctic ground ice, from northwest Canada, east Siberia, and Alaska |
title_full |
Dissolved organic carbon (DOC) in Arctic ground ice, from northwest Canada, east Siberia, and Alaska |
title_fullStr |
Dissolved organic carbon (DOC) in Arctic ground ice, from northwest Canada, east Siberia, and Alaska |
title_full_unstemmed |
Dissolved organic carbon (DOC) in Arctic ground ice, from northwest Canada, east Siberia, and Alaska |
title_sort |
dissolved organic carbon (doc) in arctic ground ice, from northwest canada, east siberia, and alaska |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.846074 https://doi.org/10.1594/PANGAEA.846074 |
op_coverage |
MEDIAN LATITUDE: 70.403801 * MEDIAN LONGITUDE: -172.285792 * SOUTH-BOUND LATITUDE: 65.030000 * WEST-BOUND LONGITUDE: 117.170000 * NORTH-BOUND LATITUDE: 73.600000 * EAST-BOUND LONGITUDE: -138.318340 * DATE/TIME START: 2007-08-22T00:00:00 * DATE/TIME END: 2007-08-22T00:00:00 |
long_lat |
ENVELOPE(117.170000,-138.318340,73.600000,65.030000) |
genre |
Arctic Barrow Herschel Herschel Island Ice laptev Laptev Sea New Siberian Islands permafrost The Cryosphere wedge* Alaska Siberia Yukon |
genre_facet |
Arctic Barrow Herschel Herschel Island Ice laptev Laptev Sea New Siberian Islands permafrost The Cryosphere wedge* Alaska Siberia Yukon |
op_source |
Supplement to: Fritz, Michael; Opel, Thomas; Tanski, George; Herzschuh, Ulrike; Meyer, Hanno; Eulenburg, Antje; Lantuit, Hugues (2015): Dissolved organic carbon (DOC) in Arctic ground ice. The Cryosphere, 9(2), 737-752, https://doi.org/10.5194/tc-9-737-2015 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.846074 https://doi.org/10.1594/PANGAEA.846074 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.84607410.5194/tc-9-737-2015 |
_version_ |
1810292554350985216 |