Mosaics of Arctic Ocean for 2005, 2006, 2007 Description This animation is comprised of Envisat ASAR mosaics of the Arctic Ocean for 2005, 2006 and 2007 and highlights the changes in sea ice. The ice-free areas appear as dark gray and the sea ice areas as light gray. The data in each yearly mosaic were acquired between 1 and 11 September by ASAR working in Global Monitoring Mode with a spatial ..