Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas
Climate change is expected to have a strong effect on the Eastern Siberian Arctic Shelf (ESAS) region, which includes 40% of the Arctic shelves and comprises the Laptev and East Siberian seas. The largest organic carbon pool, the dissolved organic carbon (DOC), may change significantly due to change...
Published in: | Global Biogeochemical Cycles |
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2010
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Online Access: | https://research.vu.nl/en/publications/b1b7ed42-5d55-40ba-8ba0-569b47dc353e https://doi.org/10.1029/2010GB003834 https://hdl.handle.net/1871.1/b1b7ed42-5d55-40ba-8ba0-569b47dc353e http://www.scopus.com/inward/record.url?scp=79251497990&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=79251497990&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/b1b7ed42-5d55-40ba-8ba0-569b47dc353e 2024-06-23T07:49:08+00:00 Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas Alling, Vanja Sanchez-Garcia, Laura Porcelli, Don Pugach, Sveta Vonk, Jorien E. Van Dongen, Bart Mörth, Carl Magnus Anderson, Leif G. Sokolov, Alexander Andersson, Per Humborg, Christoph Semiletov, Igor P. Gustafsson, Örjan 2010 https://research.vu.nl/en/publications/b1b7ed42-5d55-40ba-8ba0-569b47dc353e https://doi.org/10.1029/2010GB003834 https://hdl.handle.net/1871.1/b1b7ed42-5d55-40ba-8ba0-569b47dc353e http://www.scopus.com/inward/record.url?scp=79251497990&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=79251497990&partnerID=8YFLogxK eng eng https://research.vu.nl/en/publications/b1b7ed42-5d55-40ba-8ba0-569b47dc353e info:eu-repo/semantics/restrictedAccess Alling , V , Sanchez-Garcia , L , Porcelli , D , Pugach , S , Vonk , J E , Van Dongen , B , Mörth , C M , Anderson , L G , Sokolov , A , Andersson , P , Humborg , C , Semiletov , I P & Gustafsson , Ö 2010 , ' Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas ' , Global Biogeochemical Cycles , vol. 24 , no. 4 , GB4033 . https://doi.org/10.1029/2010GB003834 /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2010 ftvuamstcris https://doi.org/10.1029/2010GB003834 2024-06-06T00:09:31Z Climate change is expected to have a strong effect on the Eastern Siberian Arctic Shelf (ESAS) region, which includes 40% of the Arctic shelves and comprises the Laptev and East Siberian seas. The largest organic carbon pool, the dissolved organic carbon (DOC), may change significantly due to changes in both riverine inputs and transformation rates; however, the present DOC inventories and transformation patterns are poorly understood. Using samples from the International Siberian Shelf Study 2008, this study examines for the first time DOC removal in Arctic shelf waters with residence times that range from months to years. Removals of up to 10%-20% were found in the Lena River estuary, consistent with earlier studies in this area, where surface waters were shown to have a residence time of approximately 2 months. In contrast, the DOC concentrations showed a strong nonconservative pattern in areas with freshwater residence times of several years. The average losses of DOC were estimated to be 30%-50% during mixing along the shelf, corresponding to a first-order removal rate constant of 0.3 yr -1 . These data provide the first observational evidence for losses of DOC in the Arctic shelf seas, and the calculated DOC deficit reflects DOC losses that are higher than recent model estimates for the region. Overall, a large proportion of riverine DOC is removed from the surface waters across the Arctic shelves. Such significant losses must be included in models of the carbon cycle for the Arctic Ocean, especially since the breakdown of terrestrial DOC to CO 2 in Arctic shelf seas may constitute a positive feedback mechanism for Arctic climate warming. These data also provide a baseline for considering the effects of future changes in carbon fluxes, as the vast northern carbon-rich permafrost areas draining into the Arctic are affected by global warming. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Global warming laptev lena river permafrost Vrije Universiteit Amsterdam (VU): Research Portal Arctic Arctic Ocean Global Biogeochemical Cycles 24 4 n/a n/a |
institution |
Open Polar |
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Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Alling, Vanja Sanchez-Garcia, Laura Porcelli, Don Pugach, Sveta Vonk, Jorien E. Van Dongen, Bart Mörth, Carl Magnus Anderson, Leif G. Sokolov, Alexander Andersson, Per Humborg, Christoph Semiletov, Igor P. Gustafsson, Örjan Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Climate change is expected to have a strong effect on the Eastern Siberian Arctic Shelf (ESAS) region, which includes 40% of the Arctic shelves and comprises the Laptev and East Siberian seas. The largest organic carbon pool, the dissolved organic carbon (DOC), may change significantly due to changes in both riverine inputs and transformation rates; however, the present DOC inventories and transformation patterns are poorly understood. Using samples from the International Siberian Shelf Study 2008, this study examines for the first time DOC removal in Arctic shelf waters with residence times that range from months to years. Removals of up to 10%-20% were found in the Lena River estuary, consistent with earlier studies in this area, where surface waters were shown to have a residence time of approximately 2 months. In contrast, the DOC concentrations showed a strong nonconservative pattern in areas with freshwater residence times of several years. The average losses of DOC were estimated to be 30%-50% during mixing along the shelf, corresponding to a first-order removal rate constant of 0.3 yr -1 . These data provide the first observational evidence for losses of DOC in the Arctic shelf seas, and the calculated DOC deficit reflects DOC losses that are higher than recent model estimates for the region. Overall, a large proportion of riverine DOC is removed from the surface waters across the Arctic shelves. Such significant losses must be included in models of the carbon cycle for the Arctic Ocean, especially since the breakdown of terrestrial DOC to CO 2 in Arctic shelf seas may constitute a positive feedback mechanism for Arctic climate warming. These data also provide a baseline for considering the effects of future changes in carbon fluxes, as the vast northern carbon-rich permafrost areas draining into the Arctic are affected by global warming. |
format |
Article in Journal/Newspaper |
author |
Alling, Vanja Sanchez-Garcia, Laura Porcelli, Don Pugach, Sveta Vonk, Jorien E. Van Dongen, Bart Mörth, Carl Magnus Anderson, Leif G. Sokolov, Alexander Andersson, Per Humborg, Christoph Semiletov, Igor P. Gustafsson, Örjan |
author_facet |
Alling, Vanja Sanchez-Garcia, Laura Porcelli, Don Pugach, Sveta Vonk, Jorien E. Van Dongen, Bart Mörth, Carl Magnus Anderson, Leif G. Sokolov, Alexander Andersson, Per Humborg, Christoph Semiletov, Igor P. Gustafsson, Örjan |
author_sort |
Alling, Vanja |
title |
Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas |
title_short |
Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas |
title_full |
Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas |
title_fullStr |
Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas |
title_full_unstemmed |
Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas |
title_sort |
nonconservative behavior of dissolved organic carbon across the laptev and east siberian seas |
publishDate |
2010 |
url |
https://research.vu.nl/en/publications/b1b7ed42-5d55-40ba-8ba0-569b47dc353e https://doi.org/10.1029/2010GB003834 https://hdl.handle.net/1871.1/b1b7ed42-5d55-40ba-8ba0-569b47dc353e http://www.scopus.com/inward/record.url?scp=79251497990&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=79251497990&partnerID=8YFLogxK |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change Global warming laptev lena river permafrost |
genre_facet |
Arctic Arctic Ocean Climate change Global warming laptev lena river permafrost |
op_source |
Alling , V , Sanchez-Garcia , L , Porcelli , D , Pugach , S , Vonk , J E , Van Dongen , B , Mörth , C M , Anderson , L G , Sokolov , A , Andersson , P , Humborg , C , Semiletov , I P & Gustafsson , Ö 2010 , ' Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas ' , Global Biogeochemical Cycles , vol. 24 , no. 4 , GB4033 . https://doi.org/10.1029/2010GB003834 |
op_relation |
https://research.vu.nl/en/publications/b1b7ed42-5d55-40ba-8ba0-569b47dc353e |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2010GB003834 |
container_title |
Global Biogeochemical Cycles |
container_volume |
24 |
container_issue |
4 |
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n/a |
op_container_end_page |
n/a |
_version_ |
1802639400499150848 |