National Geographic’s mapmakers drew their new rendition based on how the Arctic looked in 2012, using sea ice data collected by NASA and NSIDC. While the amount of Arctic ice grows and shrinks throughout the year depending on the season, the Atlas depicts multiyear ice — ice that’s older than an year – in solid white, and the winter’s sea ice maximum is noted with a line drawn around it.
Posted on: Fri, 27 Jun 2014 09:44:43 +0000