The relationship between biophysical variables and halocarbon distributions in the waters of the Amundsen and Ross Seas, Antarctica
Little is known regarding the distribution of volatile halogenated organic compounds (halocarbons) in Antarctic waters and their relation to biophysical variables. During the austral summer (December to January) in 2007-08 halocarbon and pigment concentrations were measured in the Amundsen (100-130...
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Online Access: | https://scholarworks.wm.edu/vimsarticles/911 https://scholarworks.wm.edu/context/vimsarticles/article/1911/viewcontent/1_s2.0_S0304420312000862_main.pdf |
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-1911 2023-06-11T04:06:46+02:00 The relationship between biophysical variables and halocarbon distributions in the waters of the Amundsen and Ross Seas, Antarctica Mattson, E Karlsson, A Smith, Walker O., Jr. Abrahamsson, K 2012-01-01T08:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/911 doi: 10.1016/j.marchem.2012.07.002 https://scholarworks.wm.edu/context/vimsarticles/article/1911/viewcontent/1_s2.0_S0304420312000862_main.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/911 doi: 10.1016/j.marchem.2012.07.002 https://scholarworks.wm.edu/context/vimsarticles/article/1911/viewcontent/1_s2.0_S0304420312000862_main.pdf VIMS Articles Halogenated Organic-Compounds Southern-Ocean Phytoplankton Growth Climate-Change Ice Algae Bromoform Seawater Constants Profiles Methanes Biological Sciences Peer-Reviewed Articles Aquaculture and Fisheries text 2012 ftwilliammarycol https://doi.org/10.1016/j.marchem.2012.07.002 2023-05-04T17:43:31Z Little is known regarding the distribution of volatile halogenated organic compounds (halocarbons) in Antarctic waters and their relation to biophysical variables. During the austral summer (December to January) in 2007-08 halocarbon and pigment concentrations were measured in the Amundsen (100-130 degrees W) and Ross Sea (158 degrees W-160 degrees E). In addition, halocarbons were determined in air, snow and sea ice. The distribution of halocarbons was influenced to a large extent by sea ice, and to a much lesser extent by pelagic biota. Concentrations of naturally produced halocarbons were elevated in the surface mixed layer in ice covered areas compared to open waters in polynyas and in the bottom waters of the Ross Sea. Higher concentrations of halocarbons were also found in sea ice brine compared to the surface waters. Incubations of snow revealed an additional source of halocarbons. The distribution of halocarbons also varied considerably between the Amundsen and Ross Seas, mainly due to the different oceanographic settings. For iodinated compounds, weak correlations were found with the presence of pigments indicative of Phaeocystis, mainly in the Ross Sea. Surface waters of the Amundsen and Ross Seas are a sink for bromoform (saturation anomalies, SA, -83 to 11%), whereas sea ice was found to be both a source and sink (SA -61-97%). In contrast, both surface waters and sea ice were found to be a source of chloroiodomethane (SA -6-1 200% and 91-22 000 resp.). Consequently, polar waters can have a substantial impact on global halocarbon budgets and need to be included in large-scale assessments. (C) 2012 Elsevier B.V. All rights reserved. Text Antarc* Antarctic Antarctica ice algae Ross Sea Sea ice Southern Ocean ice covered areas W&M ScholarWorks Antarctic Southern Ocean Austral Ross Sea Marine Chemistry 140-141 1 9 |
institution |
Open Polar |
collection |
W&M ScholarWorks |
op_collection_id |
ftwilliammarycol |
language |
unknown |
topic |
Halogenated Organic-Compounds Southern-Ocean Phytoplankton Growth Climate-Change Ice Algae Bromoform Seawater Constants Profiles Methanes Biological Sciences Peer-Reviewed Articles Aquaculture and Fisheries |
spellingShingle |
Halogenated Organic-Compounds Southern-Ocean Phytoplankton Growth Climate-Change Ice Algae Bromoform Seawater Constants Profiles Methanes Biological Sciences Peer-Reviewed Articles Aquaculture and Fisheries Mattson, E Karlsson, A Smith, Walker O., Jr. Abrahamsson, K The relationship between biophysical variables and halocarbon distributions in the waters of the Amundsen and Ross Seas, Antarctica |
topic_facet |
Halogenated Organic-Compounds Southern-Ocean Phytoplankton Growth Climate-Change Ice Algae Bromoform Seawater Constants Profiles Methanes Biological Sciences Peer-Reviewed Articles Aquaculture and Fisheries |
description |
Little is known regarding the distribution of volatile halogenated organic compounds (halocarbons) in Antarctic waters and their relation to biophysical variables. During the austral summer (December to January) in 2007-08 halocarbon and pigment concentrations were measured in the Amundsen (100-130 degrees W) and Ross Sea (158 degrees W-160 degrees E). In addition, halocarbons were determined in air, snow and sea ice. The distribution of halocarbons was influenced to a large extent by sea ice, and to a much lesser extent by pelagic biota. Concentrations of naturally produced halocarbons were elevated in the surface mixed layer in ice covered areas compared to open waters in polynyas and in the bottom waters of the Ross Sea. Higher concentrations of halocarbons were also found in sea ice brine compared to the surface waters. Incubations of snow revealed an additional source of halocarbons. The distribution of halocarbons also varied considerably between the Amundsen and Ross Seas, mainly due to the different oceanographic settings. For iodinated compounds, weak correlations were found with the presence of pigments indicative of Phaeocystis, mainly in the Ross Sea. Surface waters of the Amundsen and Ross Seas are a sink for bromoform (saturation anomalies, SA, -83 to 11%), whereas sea ice was found to be both a source and sink (SA -61-97%). In contrast, both surface waters and sea ice were found to be a source of chloroiodomethane (SA -6-1 200% and 91-22 000 resp.). Consequently, polar waters can have a substantial impact on global halocarbon budgets and need to be included in large-scale assessments. (C) 2012 Elsevier B.V. All rights reserved. |
format |
Text |
author |
Mattson, E Karlsson, A Smith, Walker O., Jr. Abrahamsson, K |
author_facet |
Mattson, E Karlsson, A Smith, Walker O., Jr. Abrahamsson, K |
author_sort |
Mattson, E |
title |
The relationship between biophysical variables and halocarbon distributions in the waters of the Amundsen and Ross Seas, Antarctica |
title_short |
The relationship between biophysical variables and halocarbon distributions in the waters of the Amundsen and Ross Seas, Antarctica |
title_full |
The relationship between biophysical variables and halocarbon distributions in the waters of the Amundsen and Ross Seas, Antarctica |
title_fullStr |
The relationship between biophysical variables and halocarbon distributions in the waters of the Amundsen and Ross Seas, Antarctica |
title_full_unstemmed |
The relationship between biophysical variables and halocarbon distributions in the waters of the Amundsen and Ross Seas, Antarctica |
title_sort |
relationship between biophysical variables and halocarbon distributions in the waters of the amundsen and ross seas, antarctica |
publisher |
W&M ScholarWorks |
publishDate |
2012 |
url |
https://scholarworks.wm.edu/vimsarticles/911 https://scholarworks.wm.edu/context/vimsarticles/article/1911/viewcontent/1_s2.0_S0304420312000862_main.pdf |
geographic |
Antarctic Southern Ocean Austral Ross Sea |
geographic_facet |
Antarctic Southern Ocean Austral Ross Sea |
genre |
Antarc* Antarctic Antarctica ice algae Ross Sea Sea ice Southern Ocean ice covered areas |
genre_facet |
Antarc* Antarctic Antarctica ice algae Ross Sea Sea ice Southern Ocean ice covered areas |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/911 doi: 10.1016/j.marchem.2012.07.002 https://scholarworks.wm.edu/context/vimsarticles/article/1911/viewcontent/1_s2.0_S0304420312000862_main.pdf |
op_doi |
https://doi.org/10.1016/j.marchem.2012.07.002 |
container_title |
Marine Chemistry |
container_volume |
140-141 |
container_start_page |
1 |
op_container_end_page |
9 |
_version_ |
1768378886862667776 |