In the central Arctic Ocean above Canada, Lamont scientists on the multi-year Arctic Switchyard project are studying the effects of melting sea ice and glaciers on ocean circulation and climate. A small plane flies them to sites on the sea ice. Thin patches and mounds of wind-blown snow can make landings tricky. http://blogs.ei.columbia.edu/2012/07/09/investigating-the-world%E2%80%99s-oceans-pole-to-pole-and-deep-below-the-bottom/
