Sea ice motion data for the Canadian Archipelago


Enhanced resolution Advanced Microwave Scanning Radiometer (AMSR-E) imagery is used to estimate daily sea ice area fluxes between the Canadian Arctic Archipelago and the Arctic Ocean and Baffin Bay for the period September 2002 to June 2007. Over the period, Amundsen Gulf and M'Clure Strait had a net export of sea ice area into the Beaufort Sea and Lancaster Sound had a large net export of sea ice area into Baffin Bay. This produced a net loss of sea ice area of about 122,000 km2 or roughly 174 km3 for the region which is presumed to be generated from within the Archipelago itself mainly through the stationary and transient polynyas and leads that form each winter. Daily ice area fluxes for Amundsen Gulf and Lancaster Sound were as high as ±2500 sq. km per day. Mean sea level pressure difference across each gate is moderately correlated with daily sea ice area fluxes despite the fact that free ice drift conditions are not always met in the region. Cross-gradient and daily sea ice area flux for Lancaster Sound show a large number of counter gradient ice flux occurrences suggesting that local mesomesoscale winds (nongeostrophic) and perhaps ocean currents play a role in transporting sea ice through this gate.

Metadata Access
Creator Tom Agnew
Publisher Canadian Cryospheric Information Network
Contributor Environment Canada
Publication Year 2013
Rights Limited
Language English
Discipline Environmental Research
Spatial Coverage (70N-85N,140W-50W)
Temporal Coverage Begin 2002-09-01T11:59:59Z
Temporal Coverage End 2007-06-30T11:59:59Z