Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean
Each spring and summer, the Chukchi Sea in the western Arctic Ocean experiences a short but intense phytoplankton bloom that is controlled by sea ice cover, nutrient availability, and river runoff. During the bloom, dissolved inorganic carbon (DIC) concentrations are drawn down in the mixed layer (s...
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crwiley:10.4319/lo.2007.52.5.1789 2024-04-21T07:55:25+00:00 Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean Mathis, Jeremy T. Hansell, Dennis A. Kadko, David Bates, Nicholas R. Cooper, Lee W. 2007 http://dx.doi.org/10.4319/lo.2007.52.5.1789 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2007.52.5.1789 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2007.52.5.1789 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 52, issue 5, page 1789-1799 ISSN 0024-3590 1939-5590 Aquatic Science Oceanography journal-article 2007 crwiley https://doi.org/10.4319/lo.2007.52.5.1789 2024-04-08T06:56:20Z Each spring and summer, the Chukchi Sea in the western Arctic Ocean experiences a short but intense phytoplankton bloom that is controlled by sea ice cover, nutrient availability, and river runoff. During the bloom, dissolved inorganic carbon (DIC) concentrations are drawn down in the mixed layer (shelf, ~Δ100 µmol kg −1 shelf‐break, ~Δ50 µmol kg −1 basin, <Δ5 µmol kg −1 ) and converted to particulate organic carbon (POC) and dissolved organic carbon (DOC). We use δ 18 O and salinity to estimate DOC inputs by river and sea ice melt, allowing the marine portion of the DOC pool to be compared between seasons and to facilitate estimates of net DOC production in the region. We estimate that ~10% of the DIC consumed during net community production is converted to DOC. The remaining carbon deficit (90% of DIC drawdown) is most likely exported from the mixed layer as POC. In 2002 a carbon (C) mass balance was developed for the Chukchi Sea that showed that rates of vertical export were highest over the Chukchi Shelf near Point Barrow (64 mmol C m − d −1 ), but more commonly ranged from 10 to 35 mmol C m − d −1 over the remainder of the shelf. At the shelf‐break and in the Canada Basin export production was <10 mmol C m − d −1 . DOC plays a relatively small role as a carbon sink in the system, but quantifying its contributions provides more robust estimates of export production in the Arctic. Article in Journal/Newspaper Arctic Ocean canada basin Chukchi Chukchi Sea Phytoplankton Point Barrow Sea ice Wiley Online Library Limnology and Oceanography 52 5 1789 1799 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Oceanography |
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Aquatic Science Oceanography Mathis, Jeremy T. Hansell, Dennis A. Kadko, David Bates, Nicholas R. Cooper, Lee W. Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean |
topic_facet |
Aquatic Science Oceanography |
description |
Each spring and summer, the Chukchi Sea in the western Arctic Ocean experiences a short but intense phytoplankton bloom that is controlled by sea ice cover, nutrient availability, and river runoff. During the bloom, dissolved inorganic carbon (DIC) concentrations are drawn down in the mixed layer (shelf, ~Δ100 µmol kg −1 shelf‐break, ~Δ50 µmol kg −1 basin, <Δ5 µmol kg −1 ) and converted to particulate organic carbon (POC) and dissolved organic carbon (DOC). We use δ 18 O and salinity to estimate DOC inputs by river and sea ice melt, allowing the marine portion of the DOC pool to be compared between seasons and to facilitate estimates of net DOC production in the region. We estimate that ~10% of the DIC consumed during net community production is converted to DOC. The remaining carbon deficit (90% of DIC drawdown) is most likely exported from the mixed layer as POC. In 2002 a carbon (C) mass balance was developed for the Chukchi Sea that showed that rates of vertical export were highest over the Chukchi Shelf near Point Barrow (64 mmol C m − d −1 ), but more commonly ranged from 10 to 35 mmol C m − d −1 over the remainder of the shelf. At the shelf‐break and in the Canada Basin export production was <10 mmol C m − d −1 . DOC plays a relatively small role as a carbon sink in the system, but quantifying its contributions provides more robust estimates of export production in the Arctic. |
format |
Article in Journal/Newspaper |
author |
Mathis, Jeremy T. Hansell, Dennis A. Kadko, David Bates, Nicholas R. Cooper, Lee W. |
author_facet |
Mathis, Jeremy T. Hansell, Dennis A. Kadko, David Bates, Nicholas R. Cooper, Lee W. |
author_sort |
Mathis, Jeremy T. |
title |
Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean |
title_short |
Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean |
title_full |
Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean |
title_fullStr |
Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean |
title_full_unstemmed |
Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean |
title_sort |
determining net dissolved organic carbon production in the hydrographically complex western arctic ocean |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.4319/lo.2007.52.5.1789 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2007.52.5.1789 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2007.52.5.1789 |
genre |
Arctic Ocean canada basin Chukchi Chukchi Sea Phytoplankton Point Barrow Sea ice |
genre_facet |
Arctic Ocean canada basin Chukchi Chukchi Sea Phytoplankton Point Barrow Sea ice |
op_source |
Limnology and Oceanography volume 52, issue 5, page 1789-1799 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.2007.52.5.1789 |
container_title |
Limnology and Oceanography |
container_volume |
52 |
container_issue |
5 |
container_start_page |
1789 |
op_container_end_page |
1799 |
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1796937513784311808 |