Sea ice dynamics influence halogen deposition to Svalbard
Sea ice is an important parameter in the climate system and its changes impact upon the polar albedo and atmospheric and oceanic circulation. Iodine (I) and bromine (Br) have been measured in a shallow firn core drilled at the summit of the Holtedahlfonna glacier (Northwest Spitsbergen, Svalbard). C...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Copernicus GmbH
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/26785 |
| _version_ | 1848752085059764224 |
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| author | Spolaor, A. Gabrieli, J. Martma, T. Kohler, J. Björkman, M. Isaksson, E. Varin, C. Vallelonga, P. Plane, J. Barbante, C. |
| author_facet | Spolaor, A. Gabrieli, J. Martma, T. Kohler, J. Björkman, M. Isaksson, E. Varin, C. Vallelonga, P. Plane, J. Barbante, C. |
| author_sort | Spolaor, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Sea ice is an important parameter in the climate system and its changes impact upon the polar albedo and atmospheric and oceanic circulation. Iodine (I) and bromine (Br) have been measured in a shallow firn core drilled at the summit of the Holtedahlfonna glacier (Northwest Spitsbergen, Svalbard). Changing I concentrations can be linked to the March–May maximum sea ice extension. Bromine enrichment, indexed to the Br / Na sea water mass ratio, appears to be influenced by changes in the seasonal sea ice area. I is emitted from marine biota and so the retreat of March–May sea ice coincides with enlargement of the open-ocean surface which enhances marine primary production and consequent I emission. The observed Br enrichment could be explained by greater Br emissions during the Br explosions that have been observed to occur mainly above first year sea ice during the early springtime. In this work we present the first comparison between halogens in surface snow and Arctic sea ice extension. Although further investigation is required to characterize potential depositional and post-depositional processes, these preliminary findings suggest that I and Br can be linked to variability in the spring maximum sea ice extension and seasonal sea ice surface area. |
| first_indexed | 2025-11-14T08:03:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-26785 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:03:00Z |
| publishDate | 2013 |
| publisher | Copernicus GmbH |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-267852017-09-13T15:28:50Z Sea ice dynamics influence halogen deposition to Svalbard Spolaor, A. Gabrieli, J. Martma, T. Kohler, J. Björkman, M. Isaksson, E. Varin, C. Vallelonga, P. Plane, J. Barbante, C. Sea ice is an important parameter in the climate system and its changes impact upon the polar albedo and atmospheric and oceanic circulation. Iodine (I) and bromine (Br) have been measured in a shallow firn core drilled at the summit of the Holtedahlfonna glacier (Northwest Spitsbergen, Svalbard). Changing I concentrations can be linked to the March–May maximum sea ice extension. Bromine enrichment, indexed to the Br / Na sea water mass ratio, appears to be influenced by changes in the seasonal sea ice area. I is emitted from marine biota and so the retreat of March–May sea ice coincides with enlargement of the open-ocean surface which enhances marine primary production and consequent I emission. The observed Br enrichment could be explained by greater Br emissions during the Br explosions that have been observed to occur mainly above first year sea ice during the early springtime. In this work we present the first comparison between halogens in surface snow and Arctic sea ice extension. Although further investigation is required to characterize potential depositional and post-depositional processes, these preliminary findings suggest that I and Br can be linked to variability in the spring maximum sea ice extension and seasonal sea ice surface area. 2013 Journal Article http://hdl.handle.net/20.500.11937/26785 10.5194/tc-7-1645-2013 Copernicus GmbH unknown |
| spellingShingle | Spolaor, A. Gabrieli, J. Martma, T. Kohler, J. Björkman, M. Isaksson, E. Varin, C. Vallelonga, P. Plane, J. Barbante, C. Sea ice dynamics influence halogen deposition to Svalbard |
| title | Sea ice dynamics influence halogen deposition to Svalbard |
| title_full | Sea ice dynamics influence halogen deposition to Svalbard |
| title_fullStr | Sea ice dynamics influence halogen deposition to Svalbard |
| title_full_unstemmed | Sea ice dynamics influence halogen deposition to Svalbard |
| title_short | Sea ice dynamics influence halogen deposition to Svalbard |
| title_sort | sea ice dynamics influence halogen deposition to svalbard |
| url | http://hdl.handle.net/20.500.11937/26785 |