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...
Published in: | Limnology and Oceanography |
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Language: | English |
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2007
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ftsouthampton:oai:eprints.soton.ac.uk:357433 2023-07-30T03:59:49+02:00 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. 2007-09 https://eprints.soton.ac.uk/357433/ English eng Mathis, Jeremy T., Hansell, Dennis A., Kadko, David, Bates, Nicholas R. and Cooper, Lee W. (2007) Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean. Limnology and Oceanography, 52 (5), 1789-1799. (doi:10.4319/lo.2007.52.5.1789 <http://dx.doi.org/10.4319/lo.2007.52.5.1789>). Article PeerReviewed 2007 ftsouthampton https://doi.org/10.4319/lo.2007.52.5.1789 2023-07-09T21:49:16Z 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, ~?100 µmol kg-1; shelf-break, ~?50 µmol kg-1; basin, <?5 µmol kg-1) and converted to particulate organic carbon (POC) and dissolved organic carbon (DOC). We use ?18O 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 Arctic Arctic Ocean canada basin Chukchi Chukchi Sea Phytoplankton Point Barrow Sea ice University of Southampton: e-Prints Soton Arctic Arctic Ocean Canada Chukchi Sea Chukchi Shelf ENVELOPE(-169.167,-169.167,70.550,70.550) Limnology and Oceanography 52 5 1789 1799 |
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Open Polar |
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University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
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, ~?100 µmol kg-1; shelf-break, ~?50 µmol kg-1; basin, <?5 µmol kg-1) and converted to particulate organic carbon (POC) and dissolved organic carbon (DOC). We use ?18O 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. |
spellingShingle |
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 |
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 |
publishDate |
2007 |
url |
https://eprints.soton.ac.uk/357433/ |
long_lat |
ENVELOPE(-169.167,-169.167,70.550,70.550) |
geographic |
Arctic Arctic Ocean Canada Chukchi Sea Chukchi Shelf |
geographic_facet |
Arctic Arctic Ocean Canada Chukchi Sea Chukchi Shelf |
genre |
Arctic Arctic Arctic Ocean canada basin Chukchi Chukchi Sea Phytoplankton Point Barrow Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean canada basin Chukchi Chukchi Sea Phytoplankton Point Barrow Sea ice |
op_relation |
Mathis, Jeremy T., Hansell, Dennis A., Kadko, David, Bates, Nicholas R. and Cooper, Lee W. (2007) Determining net dissolved organic carbon production in the hydrographically complex western Arctic Ocean. Limnology and Oceanography, 52 (5), 1789-1799. (doi:10.4319/lo.2007.52.5.1789 <http://dx.doi.org/10.4319/lo.2007.52.5.1789>). |
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 |
_version_ |
1772810581748744192 |