Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer
The fugacity of CO2 and abundance of chlorophyll a (Chla) were determined in two long transects from the Polar Front to the Antarctic Continent in austral summer, December 1995–January 1996. Large undersaturations of CO2 in the surface water were observed coinciding with high Chla content. In the ma...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2002
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Online Access: | https://hdl.handle.net/11370/c23a328a-d3ea-4405-857b-d618d959bae2 https://research.rug.nl/en/publications/c23a328a-d3ea-4405-857b-d618d959bae2 https://doi.org/10.1016/S0967-0637(02)00067-5 https://pure.rug.nl/ws/files/3035142/2002DeepSeaRes1Stoll.pdf |
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ftunigroningenpu:oai:pure.rug.nl:publications/c23a328a-d3ea-4405-857b-d618d959bae2 2024-02-04T09:53:06+01:00 Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer Stoll, M.H.C. Thomas, H. Baar, H.J.W. de Zondervan, I. Jong, E. de Bathmann, U.V. Fahrbach, E. 2002 application/pdf https://hdl.handle.net/11370/c23a328a-d3ea-4405-857b-d618d959bae2 https://research.rug.nl/en/publications/c23a328a-d3ea-4405-857b-d618d959bae2 https://doi.org/10.1016/S0967-0637(02)00067-5 https://pure.rug.nl/ws/files/3035142/2002DeepSeaRes1Stoll.pdf eng eng https://research.rug.nl/en/publications/c23a328a-d3ea-4405-857b-d618d959bae2 info:eu-repo/semantics/openAccess Stoll , M H C , Thomas , H , Baar , H J W D , Zondervan , I , Jong , E D , Bathmann , U V & Fahrbach , E 2002 , ' Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer ' , Deep Sea Research Part I. Oceanographic Research Papers , vol. 49 , no. 9 , pp. 1651-1667 . https://doi.org/10.1016/S0967-0637(02)00067-5 Total inorganic carbon CO2 partial pressure CO2 system Antarctic front article 2002 ftunigroningenpu https://doi.org/10.1016/S0967-0637(02)00067-5 2024-01-10T23:25:43Z The fugacity of CO2 and abundance of chlorophyll a (Chla) were determined in two long transects from the Polar Front to the Antarctic Continent in austral summer, December 1995–January 1996. Large undersaturations of CO2 in the surface water were observed coinciding with high Chla content. In the major hydrographic regions the mean air–sea fluxes were found to range from −3 to +7 mmol m−2 d−1 making these regions act as a sink as well as a source for CO2. In the total 40-d period, the summation of the several strong source and sink regions revealed an overall modest net source of 0.3 mmol m−2 d−1, this based on the Wanninkhof quadratic relationship at in situ windspeed. A simple budget approach was used to quantify the role of phytoplankton blooms in the inorganic carbonate system of the Antarctic seas in a time frame spanning several weeks. The major controlling physical factors such as air–sea flux, Ekman pumping and upwelling are included. Net community production varies between −9 and +7 mmol m−2 d−1, because of the large oscillations in the dominance of autotrophic (CO2 fixation) versus heterotrophic (CO2 respiration) activity. Here the mixed layer depth is the major controlling factor. When integrated over time the gross influx and efflux of CO2 from air to sea is large, but the net residual air/sea exchange is a modest efflux from sea to atmosphere. Article in Journal/Newspaper Antarc* Antarctic University of Groningen research database Antarctic Austral The Antarctic Deep Sea Research Part I: Oceanographic Research Papers 49 9 1651 1667 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
Total inorganic carbon CO2 partial pressure CO2 system Antarctic front |
spellingShingle |
Total inorganic carbon CO2 partial pressure CO2 system Antarctic front Stoll, M.H.C. Thomas, H. Baar, H.J.W. de Zondervan, I. Jong, E. de Bathmann, U.V. Fahrbach, E. Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer |
topic_facet |
Total inorganic carbon CO2 partial pressure CO2 system Antarctic front |
description |
The fugacity of CO2 and abundance of chlorophyll a (Chla) were determined in two long transects from the Polar Front to the Antarctic Continent in austral summer, December 1995–January 1996. Large undersaturations of CO2 in the surface water were observed coinciding with high Chla content. In the major hydrographic regions the mean air–sea fluxes were found to range from −3 to +7 mmol m−2 d−1 making these regions act as a sink as well as a source for CO2. In the total 40-d period, the summation of the several strong source and sink regions revealed an overall modest net source of 0.3 mmol m−2 d−1, this based on the Wanninkhof quadratic relationship at in situ windspeed. A simple budget approach was used to quantify the role of phytoplankton blooms in the inorganic carbonate system of the Antarctic seas in a time frame spanning several weeks. The major controlling physical factors such as air–sea flux, Ekman pumping and upwelling are included. Net community production varies between −9 and +7 mmol m−2 d−1, because of the large oscillations in the dominance of autotrophic (CO2 fixation) versus heterotrophic (CO2 respiration) activity. Here the mixed layer depth is the major controlling factor. When integrated over time the gross influx and efflux of CO2 from air to sea is large, but the net residual air/sea exchange is a modest efflux from sea to atmosphere. |
format |
Article in Journal/Newspaper |
author |
Stoll, M.H.C. Thomas, H. Baar, H.J.W. de Zondervan, I. Jong, E. de Bathmann, U.V. Fahrbach, E. |
author_facet |
Stoll, M.H.C. Thomas, H. Baar, H.J.W. de Zondervan, I. Jong, E. de Bathmann, U.V. Fahrbach, E. |
author_sort |
Stoll, M.H.C. |
title |
Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer |
title_short |
Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer |
title_full |
Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer |
title_fullStr |
Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer |
title_full_unstemmed |
Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer |
title_sort |
biological versus physical processes as drivers of large oscillations of the air–sea co2 flux in the antarctic marginal ice zone during summer |
publishDate |
2002 |
url |
https://hdl.handle.net/11370/c23a328a-d3ea-4405-857b-d618d959bae2 https://research.rug.nl/en/publications/c23a328a-d3ea-4405-857b-d618d959bae2 https://doi.org/10.1016/S0967-0637(02)00067-5 https://pure.rug.nl/ws/files/3035142/2002DeepSeaRes1Stoll.pdf |
geographic |
Antarctic Austral The Antarctic |
geographic_facet |
Antarctic Austral The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Stoll , M H C , Thomas , H , Baar , H J W D , Zondervan , I , Jong , E D , Bathmann , U V & Fahrbach , E 2002 , ' Biological versus physical processes as drivers of large oscillations of the air–sea CO2 flux in the Antarctic marginal ice zone during summer ' , Deep Sea Research Part I. Oceanographic Research Papers , vol. 49 , no. 9 , pp. 1651-1667 . https://doi.org/10.1016/S0967-0637(02)00067-5 |
op_relation |
https://research.rug.nl/en/publications/c23a328a-d3ea-4405-857b-d618d959bae2 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/S0967-0637(02)00067-5 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
49 |
container_issue |
9 |
container_start_page |
1651 |
op_container_end_page |
1667 |
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1789964188481748992 |