Divergent patterns of recent sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region
Over the past three decades of the observed satellite record, there have been significant changes in sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region (PAR). Satellite data reveal that patterns in sea ice cover have been spatially heterogeneous, with significan...
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ftclarkuniv:oai:commons.clarku.edu:faculty_geography-1215 2023-09-05T13:17:22+02:00 Divergent patterns of recent sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region Frey, Karen E. Moore, G. W.K. Cooper, Lee W. Grebmeier, Jacqueline M. 2015-08-01T07:00:00Z https://commons.clarku.edu/faculty_geography/216 https://doi.org/10.1016/j.pocean.2015.05.009 unknown Clark Digital Commons https://commons.clarku.edu/faculty_geography/216 doi:10.1016/j.pocean.2015.05.009 https://doi.org/10.1016/j.pocean.2015.05.009 Geography air temperature divergence ecosystem health ice cover satellite data sea ice wind-driven circulation Climate Oceanography text 2015 ftclarkuniv https://doi.org/10.1016/j.pocean.2015.05.009 2023-08-14T06:15:24Z Over the past three decades of the observed satellite record, there have been significant changes in sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region (PAR). Satellite data reveal that patterns in sea ice cover have been spatially heterogeneous, with significant declines in the Chukchi and Beaufort seas, yet more complex multi-year variability in the Bering Sea south of St. Lawrence Island. These patterns in the Chukchi and Beaufort seas have intensified since 2000, indicating a regime shift in sea ice cover across the northern portion of the PAR. In particular, satellite data over 1979-2012 reveal localized decreases in sea ice presence of up to -1.64. days/year (Canada Basin) and -1.24. days/year (Beaufort Sea), which accelerated to up to -6.57. days/year (Canada Basin) and -12.84. days/year (Beaufort Sea) over the 2000-2012 time period. In contrast, sea ice in the Bering Sea shows more complex multi-year variability with localized increases in sea ice presence of up to +8.41. days/year since 2000. The observed increases in sea ice cover since 2000 in the southern Bering Sea shelf region are observed in wintertime, whereas sea ice losses in the Canada Basin and Beaufort Sea have occurred during summer. We further compare sea ice variability across the region with the National Centers for Environmental Prediction (NCEP) North American Regional Reanalysis (NARR) wind and air temperature fields to determine the extent to which this recent variability is driven by thermal vs. wind-driven processes. Results suggest that for these localized areas that are experiencing the most rapid shifts in sea ice cover, those in the Beaufort Sea are primarily wind driven, those offshore in the Canada Basin are primarily thermally driven, and those in the Bering Sea are influenced by elements of both. Sea ice variability (and its drivers) across the PAR provides critical insight into the forcing effects of recent shifts in climate and its likely ultimate profound impacts on ecosystem ... Text Arctic Beaufort Sea Bering Sea canada basin Chukchi Pacific Arctic Sea ice St Lawrence Island Clark University: Clark Digital Commons Arctic Bering Sea Canada Lawrence Island ENVELOPE(-103.718,-103.718,56.967,56.967) Pacific Progress in Oceanography 136 32 49 |
institution |
Open Polar |
collection |
Clark University: Clark Digital Commons |
op_collection_id |
ftclarkuniv |
language |
unknown |
topic |
air temperature divergence ecosystem health ice cover satellite data sea ice wind-driven circulation Climate Oceanography |
spellingShingle |
air temperature divergence ecosystem health ice cover satellite data sea ice wind-driven circulation Climate Oceanography Frey, Karen E. Moore, G. W.K. Cooper, Lee W. Grebmeier, Jacqueline M. Divergent patterns of recent sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region |
topic_facet |
air temperature divergence ecosystem health ice cover satellite data sea ice wind-driven circulation Climate Oceanography |
description |
Over the past three decades of the observed satellite record, there have been significant changes in sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region (PAR). Satellite data reveal that patterns in sea ice cover have been spatially heterogeneous, with significant declines in the Chukchi and Beaufort seas, yet more complex multi-year variability in the Bering Sea south of St. Lawrence Island. These patterns in the Chukchi and Beaufort seas have intensified since 2000, indicating a regime shift in sea ice cover across the northern portion of the PAR. In particular, satellite data over 1979-2012 reveal localized decreases in sea ice presence of up to -1.64. days/year (Canada Basin) and -1.24. days/year (Beaufort Sea), which accelerated to up to -6.57. days/year (Canada Basin) and -12.84. days/year (Beaufort Sea) over the 2000-2012 time period. In contrast, sea ice in the Bering Sea shows more complex multi-year variability with localized increases in sea ice presence of up to +8.41. days/year since 2000. The observed increases in sea ice cover since 2000 in the southern Bering Sea shelf region are observed in wintertime, whereas sea ice losses in the Canada Basin and Beaufort Sea have occurred during summer. We further compare sea ice variability across the region with the National Centers for Environmental Prediction (NCEP) North American Regional Reanalysis (NARR) wind and air temperature fields to determine the extent to which this recent variability is driven by thermal vs. wind-driven processes. Results suggest that for these localized areas that are experiencing the most rapid shifts in sea ice cover, those in the Beaufort Sea are primarily wind driven, those offshore in the Canada Basin are primarily thermally driven, and those in the Bering Sea are influenced by elements of both. Sea ice variability (and its drivers) across the PAR provides critical insight into the forcing effects of recent shifts in climate and its likely ultimate profound impacts on ecosystem ... |
format |
Text |
author |
Frey, Karen E. Moore, G. W.K. Cooper, Lee W. Grebmeier, Jacqueline M. |
author_facet |
Frey, Karen E. Moore, G. W.K. Cooper, Lee W. Grebmeier, Jacqueline M. |
author_sort |
Frey, Karen E. |
title |
Divergent patterns of recent sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region |
title_short |
Divergent patterns of recent sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region |
title_full |
Divergent patterns of recent sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region |
title_fullStr |
Divergent patterns of recent sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region |
title_full_unstemmed |
Divergent patterns of recent sea ice cover across the Bering, Chukchi, and Beaufort seas of the Pacific Arctic Region |
title_sort |
divergent patterns of recent sea ice cover across the bering, chukchi, and beaufort seas of the pacific arctic region |
publisher |
Clark Digital Commons |
publishDate |
2015 |
url |
https://commons.clarku.edu/faculty_geography/216 https://doi.org/10.1016/j.pocean.2015.05.009 |
long_lat |
ENVELOPE(-103.718,-103.718,56.967,56.967) |
geographic |
Arctic Bering Sea Canada Lawrence Island Pacific |
geographic_facet |
Arctic Bering Sea Canada Lawrence Island Pacific |
genre |
Arctic Beaufort Sea Bering Sea canada basin Chukchi Pacific Arctic Sea ice St Lawrence Island |
genre_facet |
Arctic Beaufort Sea Bering Sea canada basin Chukchi Pacific Arctic Sea ice St Lawrence Island |
op_source |
Geography |
op_relation |
https://commons.clarku.edu/faculty_geography/216 doi:10.1016/j.pocean.2015.05.009 https://doi.org/10.1016/j.pocean.2015.05.009 |
op_doi |
https://doi.org/10.1016/j.pocean.2015.05.009 |
container_title |
Progress in Oceanography |
container_volume |
136 |
container_start_page |
32 |
op_container_end_page |
49 |
_version_ |
1776198567663239168 |