Dr Jamie Morison of the North Pole Environmental Observatory has been travelling to the Arctic for decades to plant web cameras and other instruments to monitor the air, ice and ocean.
You can see the North Pole changing during the summer of 2012 in this time-lapse video, as well as an apparent visit by a polar bear:
How do scientists survive -30 degrees temperatures at Barneo, the temporary camp set up on floating ice near the North Pole?
Arctic glaciers are melting faster than expected fuelling a rise in sea levels, which experts believe could cost the UK billions of pounds.
As new figures show the record cold weather is persisting into April, the Met Office says it will investigate if Arctic melting is to blame.