Click on this image to see in more detail how dramatic ice sea ice reduction is expected to be.
A fascinating program by the BBC (Radio 4), entitled Arctic Meltdown. This program is largely concerned with the melting of the Greenland ice sheet. The program also covers the impact of climate change on the Inuit, and the local wildlife such as the badly affected polar bears.
If you find the program interesting, which I`m sure you will then you may like to read this report about just how fast the arctic is changing.