Wintertime measurements of pCO2 in Arctic landfast sea ice
Recent work has described how gas exchange can occur through sea ice. First, carbon fluxes over sea ice surfaces have been measured. Second, sea ice brine has an elevated capacity over seawater to absorb CO2(g) due to its cold temperature and chemical equilibrium promoting carbon phase changes. Sea...
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2008
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ftcanadathes:oai:collectionscanada.gc.ca:MWU.1993/3093 2023-05-15T14:42:10+02:00 Wintertime measurements of pCO2 in Arctic landfast sea ice Owens, Owen C. Papakyriakou, Tim (Environment and Geography) Miller, Lisa (Institute of Ocean Sciences) Tenuta, Mario (Soil Science) 2008-09-17T17:02:34Z http://hdl.handle.net/1993/3093 en_US eng http://hdl.handle.net/1993/3093 Arctic temperature sea ice brine carbon cycle carbonate gas flux gas chamber gas chromatography gas exchange pCO2 2008 ftcanadathes 2014-03-30T00:50:10Z Recent work has described how gas exchange can occur through sea ice. First, carbon fluxes over sea ice surfaces have been measured. Second, sea ice brine has an elevated capacity over seawater to absorb CO2(g) due to its cold temperature and chemical equilibrium promoting carbon phase changes. Sea ice pCO2 profiles were collected using a new method of remotely sampling gas in situ via diffusive membranes placed within growing sea ice. Gas analysis was complimented by measurements of local meteorology and ice chemistry. The work was part of the CASES 2004 project. The observed elevation in sea ice pCO2 coupled with the mobility of the brine points to the role that brine plays in Arctic carbon transport. The gas transport links the Arctic atmosphere and ocean and indicates that a thinning and receding ice cover may not result in creating a negative feedback to the increasing atmospheric CO2(g) concentration. Other/Unknown Material Arctic Sea ice Theses Canada/Thèses Canada (Library and Archives Canada) Arctic |
institution |
Open Polar |
collection |
Theses Canada/Thèses Canada (Library and Archives Canada) |
op_collection_id |
ftcanadathes |
language |
English |
topic |
Arctic temperature sea ice brine carbon cycle carbonate gas flux gas chamber gas chromatography gas exchange pCO2 |
spellingShingle |
Arctic temperature sea ice brine carbon cycle carbonate gas flux gas chamber gas chromatography gas exchange pCO2 Owens, Owen C. Wintertime measurements of pCO2 in Arctic landfast sea ice |
topic_facet |
Arctic temperature sea ice brine carbon cycle carbonate gas flux gas chamber gas chromatography gas exchange pCO2 |
description |
Recent work has described how gas exchange can occur through sea ice. First, carbon fluxes over sea ice surfaces have been measured. Second, sea ice brine has an elevated capacity over seawater to absorb CO2(g) due to its cold temperature and chemical equilibrium promoting carbon phase changes. Sea ice pCO2 profiles were collected using a new method of remotely sampling gas in situ via diffusive membranes placed within growing sea ice. Gas analysis was complimented by measurements of local meteorology and ice chemistry. The work was part of the CASES 2004 project. The observed elevation in sea ice pCO2 coupled with the mobility of the brine points to the role that brine plays in Arctic carbon transport. The gas transport links the Arctic atmosphere and ocean and indicates that a thinning and receding ice cover may not result in creating a negative feedback to the increasing atmospheric CO2(g) concentration. |
author2 |
Papakyriakou, Tim (Environment and Geography) Miller, Lisa (Institute of Ocean Sciences) Tenuta, Mario (Soil Science) |
author |
Owens, Owen C. |
author_facet |
Owens, Owen C. |
author_sort |
Owens, Owen C. |
title |
Wintertime measurements of pCO2 in Arctic landfast sea ice |
title_short |
Wintertime measurements of pCO2 in Arctic landfast sea ice |
title_full |
Wintertime measurements of pCO2 in Arctic landfast sea ice |
title_fullStr |
Wintertime measurements of pCO2 in Arctic landfast sea ice |
title_full_unstemmed |
Wintertime measurements of pCO2 in Arctic landfast sea ice |
title_sort |
wintertime measurements of pco2 in arctic landfast sea ice |
publishDate |
2008 |
url |
http://hdl.handle.net/1993/3093 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_relation |
http://hdl.handle.net/1993/3093 |
_version_ |
1766313876510474240 |