Global Warming and Sea Ice by Northern Canada69.9N 120.1W
Bodies of water in the Arctic, in Canada’s Northwest Territories and the province of Nunavut are covered in ice: the Great Bear Lake (below), Amundsen Gulf (upper left) and Queen Maud Gulf (upper right). Most of the sea ice breaks up in July during a normal year, with some areas only breaking up in August. Here, ice can be seen breaking up in Amundsen Gulf, near the left edge.
Ongoing changes in the climate of the Arctic include rising temperatures, loss of sea ice, and melting of the Greenland ice sheet. The Arctic ocean will likely be free of summer sea ice before the year 2100. Because of the amplified response of the Arctic to global warming, it is often seen as a high-sensitivity indicator of climate change.