Sea ice is shrinking

Arctic sea ice extent fell 0.16 million km² from November 16 to November 19, 2016, as illustrated by above ads.nipr.ac.jp/vishop image. The image below, based on NSIDC data, shows the Arctic sea ice shrinking 49,000 km² in four days. This is happening at a time when there is little or no sunlight reaching the Arctic, as illustrated by the image below. The image below was created by Torstein Viddal and earlier posted at the Arctic Sea Ice Collapse blog. This recent fall in extent is partly due to strong winds, as illustrated by the image on the right. Mostly, though, the lack of sea ice over the Arctic Ocean is caused by very warm water that is now arriving in the Arctic Ocean. During the northern summer, water off the coast of North America warms up and gets pushed by the Coriolis force toward the Arctic Ocean. It takes several months for the water to travel along the Gulf Stream through the North Atlantic. It has taken until now for the Arctic Ocean to bear the brunt of ...