<![CDATA[Oldest/Thickest Arctic Sea Ice Has More Than Doubled Since 2012]]>Mark “Death Spiral” Serreze at NSIDC always puts a graph of multi-year ice in his April sea ice news. The point of this graph is to show how old/thick ice is disappearing from the Arctic. This year he forgot, so I decided to chip in and lend a hand.
The percentage of sea ice five or more years old has more than doubled since 2012.
The animation below shows the huge increase in multi-year ice in the western Arctic over the last two years
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