Measurements of atmospheric mercury, gaseous elemental mercury, and evasional fluxes in the Amundsen Gulf: the role of the sea-ice environment
Mercury (Hg) has been recognized as a contaminant of global concern due to its high toxicity, as well as its ability to mobilize over long distances and biomagnify up through the food chain. The discovery of polar springtime atmospheric mercury depletion events (AMDEs) in the 1990s provides a new me...
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/4362 2023-06-18T03:35:53+02:00 Measurements of atmospheric mercury, gaseous elemental mercury, and evasional fluxes in the Amundsen Gulf: the role of the sea-ice environment Latonas, Jeffrey Roman Wang, Feiyue (Environment and Geography) Stern, Gary (Environment and Geography) Papakyriakou, Tim (Environment and Geography) Tenuta, Mario (Soil Science) 2011-01-18T20:37:50Z 3851163 bytes application/pdf http://hdl.handle.net/1993/4362 eng eng http://hdl.handle.net/1993/4362 open access Atmospheric Mercury Dissolved Gaseous Mercury Flux master thesis 2011 ftunivmanitoba 2023-06-04T17:47:12Z Mercury (Hg) has been recognized as a contaminant of global concern due to its high toxicity, as well as its ability to mobilize over long distances and biomagnify up through the food chain. The discovery of polar springtime atmospheric mercury depletion events (AMDEs) in the 1990s provides a new mechanism for enhanced atmospheric Hg deposition to the surface environment in the Arctic, yet questions remain on the process leading to AMDEs and the net contribution of AMDEs to Hg loadings to the Arctic marine ecosystem. Here we report the first systematic study of AMDEs over the open ocean conducted in the Amundsen Gulf flaw lead system from February to July 2008. A total of 31 AMDEs were observed which showed clear dependence on local sea ice environment and meteorological conditions. Enhanced concentrations of dissolved gaseous mercury were also measured in both under ice and open water conditions. Our results confirm that the sea ice environment plays a large role in Hg dynamics in the Arctic Ocean. February 2011 Master Thesis Amundsen Gulf Arctic Arctic Ocean Sea ice MSpace at the University of Manitoba Arctic Arctic Ocean |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
Atmospheric Mercury Dissolved Gaseous Mercury Flux |
spellingShingle |
Atmospheric Mercury Dissolved Gaseous Mercury Flux Latonas, Jeffrey Roman Measurements of atmospheric mercury, gaseous elemental mercury, and evasional fluxes in the Amundsen Gulf: the role of the sea-ice environment |
topic_facet |
Atmospheric Mercury Dissolved Gaseous Mercury Flux |
description |
Mercury (Hg) has been recognized as a contaminant of global concern due to its high toxicity, as well as its ability to mobilize over long distances and biomagnify up through the food chain. The discovery of polar springtime atmospheric mercury depletion events (AMDEs) in the 1990s provides a new mechanism for enhanced atmospheric Hg deposition to the surface environment in the Arctic, yet questions remain on the process leading to AMDEs and the net contribution of AMDEs to Hg loadings to the Arctic marine ecosystem. Here we report the first systematic study of AMDEs over the open ocean conducted in the Amundsen Gulf flaw lead system from February to July 2008. A total of 31 AMDEs were observed which showed clear dependence on local sea ice environment and meteorological conditions. Enhanced concentrations of dissolved gaseous mercury were also measured in both under ice and open water conditions. Our results confirm that the sea ice environment plays a large role in Hg dynamics in the Arctic Ocean. February 2011 |
author2 |
Wang, Feiyue (Environment and Geography) Stern, Gary (Environment and Geography) Papakyriakou, Tim (Environment and Geography) Tenuta, Mario (Soil Science) |
format |
Master Thesis |
author |
Latonas, Jeffrey Roman |
author_facet |
Latonas, Jeffrey Roman |
author_sort |
Latonas, Jeffrey Roman |
title |
Measurements of atmospheric mercury, gaseous elemental mercury, and evasional fluxes in the Amundsen Gulf: the role of the sea-ice environment |
title_short |
Measurements of atmospheric mercury, gaseous elemental mercury, and evasional fluxes in the Amundsen Gulf: the role of the sea-ice environment |
title_full |
Measurements of atmospheric mercury, gaseous elemental mercury, and evasional fluxes in the Amundsen Gulf: the role of the sea-ice environment |
title_fullStr |
Measurements of atmospheric mercury, gaseous elemental mercury, and evasional fluxes in the Amundsen Gulf: the role of the sea-ice environment |
title_full_unstemmed |
Measurements of atmospheric mercury, gaseous elemental mercury, and evasional fluxes in the Amundsen Gulf: the role of the sea-ice environment |
title_sort |
measurements of atmospheric mercury, gaseous elemental mercury, and evasional fluxes in the amundsen gulf: the role of the sea-ice environment |
publishDate |
2011 |
url |
http://hdl.handle.net/1993/4362 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Amundsen Gulf Arctic Arctic Ocean Sea ice |
genre_facet |
Amundsen Gulf Arctic Arctic Ocean Sea ice |
op_relation |
http://hdl.handle.net/1993/4362 |
op_rights |
open access |
_version_ |
1769010898848972800 |