Dr. Susan Crockford,
Davis Strait ice pack is slowly moving south this year just as shorefast ice is developing in-place along the Labrador shoreline, similar to last year. East Coast harp seals that give birth in the region in March depend on this ice and so do many Davis Strait polar bears that feed on those newborn seals. In contrast, in 2017 the ice off Labrador was broader by mid-January (even more so by mid-February) and that seems to have made a huge difference by April, when ice north of Newfoundland was thick and extensive.
Compared to last year at this time, there was somewhat less ice along the Labrador coast but the difference is really negligible. By April, ice extent was well below average, especially in the Gulf of St. Lawrence, and there were few sightings of polar bears along the Labrador and Newfoundland coasts.
Back in 2017 at the same time (below), the band of ice along the southern Labrador coast was much broader, indicating more movement of Davis Strait ice from the north. This resulted in so many polar bear sightings in Newfoundland and Labrador by March and April that I could hardly keep up reporting them (Crockford 2019:32):
East coast conditions could change significantly over the next few weeks however, especially if weather conditions bring more north winds.
via Watts Up With That?
January 13, 2022 at 08:29PM