Calibration of an ice-core glaciochemical (sea-salt) record with sea-ice variability in the Canadian Arctic
Correlation between glaciochemical time series from an ice core collected on Devon Ice Cap, Nunavut, Canada, and gridded time series of sea-ice concentrations reveals statistically significant inverse relationships between sea-salt concentrations (mainly Na+, Mg2+ and Cl−) in the ice core and sea-ic...
Published in: | Annals of Glaciology |
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Online Access: | https://scholars.unh.edu/earthsci_facpub/534 https://doi.org/10.3189/172756406781811349 |
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ftuninhampshire:oai:scholars.unh.edu:earthsci_facpub-1533 2023-05-15T15:07:11+02:00 Calibration of an ice-core glaciochemical (sea-salt) record with sea-ice variability in the Canadian Arctic Kinnard, Christophe Zdanowicz, Christian Fisher, David Wake, Cameron P 2006-11-01T08:00:00Z https://scholars.unh.edu/earthsci_facpub/534 https://doi.org/10.3189/172756406781811349 unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/earthsci_facpub/534 http://dx.doi.org/10.3189/172756406781811349 Earth Sciences Scholarship text 2006 ftuninhampshire https://doi.org/10.3189/172756406781811349 2023-01-30T21:35:33Z Correlation between glaciochemical time series from an ice core collected on Devon Ice Cap, Nunavut, Canada, and gridded time series of sea-ice concentrations reveals statistically significant inverse relationships between sea-salt concentrations (mainly Na+, Mg2+ and Cl−) in the ice core and sea-ice cover in Baffin Bay over the period 1980–97. An empirical orthogonal function (EOF) analysis performed on all major ions shows that the dominant mode of glaciochemical variability (EOF1) represents a sea-salt signal, which correlates best with sea-ice concentration in Baffin Bay. On a seasonal basis, the strongest and most spatially extensive anticorrelations are found in Baffin Bay during the fall, followed by spring, summer and winter. These results support the notion that increased open-water conditions in Baffin Bay during the stormy seasons (fall and spring) promote increased production, transport and deposition of sea-salt aerosols on Devon Ice Cap. Comparison of ice-core time series of EOF1, 18O and melt percentage, with air temperatures recorded in Upernavik, Greenland, suggests that ice-cover variations in Baffin Bay over the past ∼145 years were dynamically rather than thermodynamically controlled, with periods of strengthened cyclonic circulation leading to increased open-water conditions, and a greater sea-salt flux on Devon Ice Cap. Text Arctic Baffin Bay Baffin Bay Baffin Greenland Ice cap ice core Nunavut Sea ice Upernavik University of New Hampshire: Scholars Repository Arctic Nunavut Baffin Bay Canada Greenland Devon Ice Cap ENVELOPE(-82.499,-82.499,75.335,75.335) Annals of Glaciology 44 383 390 |
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Open Polar |
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University of New Hampshire: Scholars Repository |
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ftuninhampshire |
language |
unknown |
description |
Correlation between glaciochemical time series from an ice core collected on Devon Ice Cap, Nunavut, Canada, and gridded time series of sea-ice concentrations reveals statistically significant inverse relationships between sea-salt concentrations (mainly Na+, Mg2+ and Cl−) in the ice core and sea-ice cover in Baffin Bay over the period 1980–97. An empirical orthogonal function (EOF) analysis performed on all major ions shows that the dominant mode of glaciochemical variability (EOF1) represents a sea-salt signal, which correlates best with sea-ice concentration in Baffin Bay. On a seasonal basis, the strongest and most spatially extensive anticorrelations are found in Baffin Bay during the fall, followed by spring, summer and winter. These results support the notion that increased open-water conditions in Baffin Bay during the stormy seasons (fall and spring) promote increased production, transport and deposition of sea-salt aerosols on Devon Ice Cap. Comparison of ice-core time series of EOF1, 18O and melt percentage, with air temperatures recorded in Upernavik, Greenland, suggests that ice-cover variations in Baffin Bay over the past ∼145 years were dynamically rather than thermodynamically controlled, with periods of strengthened cyclonic circulation leading to increased open-water conditions, and a greater sea-salt flux on Devon Ice Cap. |
format |
Text |
author |
Kinnard, Christophe Zdanowicz, Christian Fisher, David Wake, Cameron P |
spellingShingle |
Kinnard, Christophe Zdanowicz, Christian Fisher, David Wake, Cameron P Calibration of an ice-core glaciochemical (sea-salt) record with sea-ice variability in the Canadian Arctic |
author_facet |
Kinnard, Christophe Zdanowicz, Christian Fisher, David Wake, Cameron P |
author_sort |
Kinnard, Christophe |
title |
Calibration of an ice-core glaciochemical (sea-salt) record with sea-ice variability in the Canadian Arctic |
title_short |
Calibration of an ice-core glaciochemical (sea-salt) record with sea-ice variability in the Canadian Arctic |
title_full |
Calibration of an ice-core glaciochemical (sea-salt) record with sea-ice variability in the Canadian Arctic |
title_fullStr |
Calibration of an ice-core glaciochemical (sea-salt) record with sea-ice variability in the Canadian Arctic |
title_full_unstemmed |
Calibration of an ice-core glaciochemical (sea-salt) record with sea-ice variability in the Canadian Arctic |
title_sort |
calibration of an ice-core glaciochemical (sea-salt) record with sea-ice variability in the canadian arctic |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
2006 |
url |
https://scholars.unh.edu/earthsci_facpub/534 https://doi.org/10.3189/172756406781811349 |
long_lat |
ENVELOPE(-82.499,-82.499,75.335,75.335) |
geographic |
Arctic Nunavut Baffin Bay Canada Greenland Devon Ice Cap |
geographic_facet |
Arctic Nunavut Baffin Bay Canada Greenland Devon Ice Cap |
genre |
Arctic Baffin Bay Baffin Bay Baffin Greenland Ice cap ice core Nunavut Sea ice Upernavik |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Greenland Ice cap ice core Nunavut Sea ice Upernavik |
op_source |
Earth Sciences Scholarship |
op_relation |
https://scholars.unh.edu/earthsci_facpub/534 http://dx.doi.org/10.3189/172756406781811349 |
op_doi |
https://doi.org/10.3189/172756406781811349 |
container_title |
Annals of Glaciology |
container_volume |
44 |
container_start_page |
383 |
op_container_end_page |
390 |
_version_ |
1766338736090513408 |