Here is some animation from NASA depicting how the Arctic has been
losing its old ice.
On the first chart, grab the green handle and slide it across the map
to compare 1984 with 2016.
The second one is an animation from 1984 to 2016 at time of minimum
extent.
Third one is for the same period but shows changes throughout the
years. This one also comes with a commentary.

http://www.nasa.gov/feature/goddard/...arming-summers


--
Graham P Davis, Bracknell, Berks. [Retd meteorologist/programmer]
Web-site: http://www.scarlet-jade.com/
There are more fools than knaves in the world, else the knaves would
not have enough to live upon. [Samuel Butler]