A close up of a section of the middle of the Humboldt glacier which calves bergs into the Kane Basin, the widest glacier in the northern hemisphere, it has a front of 110 kilometers across. Humboldt and Petermann glaciers between them (both currently being studied by a Greenpeace expedition) drain most of the ice from the N/W part of the Greenland ice-sheet. Together the two glaciers are responsible for 10 percent of the total ice drained from the Greenland ice-sheet.
In order to study these two glaciers and others like them, a team of scientists are on board the ship MY Arctic Sunrise during the 1st leg of Greenpeace's 3 month long Arctic Impacts expedition, to document the effects of climate change on the Arctic environment ahead of the Copenhagen summit which will be held in December 2009.