NASA - 95% Of Four-Year-Old And Older Arctic Sea Ice Gone Since 1984

[hatrack]

The Arctic has lost almost 95% of its older ice cover since 1984, according to NASA. The ice in the Arctic grows and shrinks through the year, and is made up of seasonal and perennial ice. The perennial sea ice that has built up over the years tends to be thicker and less vulnerable to melting away in summer than newer seasonal ice.

According scientists at NASA, the area covered by Arctic sea ice at least four years old has decreased from 1,860,000 square kilometres in September 1984 to 110,000 square kilometres in September 2016.

Arctic sea ice reaches its minimum each September. September Arctic sea ice is now declining at a rate of 13.3% per decade, relative to the 1981 to 2010 average.

In the visualisation below from NASA of data from buoys, weather stations, satellites and computer models, the age of the ice is indicated by shades ranging from blue-gray for the youngest ice to white for the oldest.

EDIT

http://www.hindustantimes.com/world-news/climate-change-arctic-lost-nearly-95-of-its-old-ice-since-1984/story-XJiOVQT3bMeqN4NVrz67KJ.html

[CrispyQ]

1. So this is the kind of info we are going to lose when Trump takes office, right?