Sea ice from laser scanner

A coloured height map produced from measurements made during the joint ESA/NASA flights under CryoSat. This map was generated from the measurements taken by the airborne laser scanner on the ESA Twin-Otter. Two thick ice floes can be seen in the upper right and lower left. Ridges in the ice appear in red. A large lead (open or recently refrozen water) is clearly visible in the middle.