The evolution of the frozen surface of the Arctic

Two months ago, the Arctic ice area reached number 4 on the scale of the lowest values since the beginning of record. This means in February 2014 the Arctic ice area was only 14.44 million km² big. The lowest size was measured in 2005.
The ice size of summer 2013 increased compared to 2012. However, scientists assume that it was rather an exception and that the ice is going to melt further. In the past decades the average air temperature in the Arctic has risen double the speed than the global average. Since 1980 the Arctic has been warming up the strongest in spring and winter and the most little in autumn. In one decade the temperature is rising about around 1°C. In the months after April the ice layer is usually getting thinner as it is getting warmer in summer and the ice is melting again. The ice is the thinnest after the warm months in September.