The Scientific Visualization Studio at the NASA/Goddard Space Flight Center has recently released a video of the Arctic Sea Ice from 1979 to 2010. They are using microwave images from satellites to compute where the Arctic sea ice is located.

In 2007, Arctic summer sea ice reached its lowest extent on record – nearly 25% less than the previous low set in 2005. At the end of each summer, the sea ice cover reaches its minimum extent and what is left is what is called the perennial ice cover which consists mainly of thick multi-year ice flows. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade.

Credit: NASA/Goddard Space Flight Center Scientific Visualization Studio

via : Sea Ice Yearly Minimum 1979-2010