The glaciers of the Canadian Arctic Archipelago will undergo a dramatic retreat this century if warming projections hold true.

BBC: Canadian glaciers face 'big losses'

The Canadian Arctic Archipelago is a vast area, comprising some 36, 000 islands.

BBC: Canadian glaciers face 'big losses'

The reconstructed Antarctic map is more complete than the corresponding map for the Arctic where the team had to contend with more gaps in the Nimbus coverage, including around the Canadian Archipelago and north of Alaska.

BBC: Earliest satellite maps of Antarctic and Arctic sea-ice