I thought it was melting.

Nope, the natural wobble of the earth causes the Arctic then the Antartic to alternately gain and lose thickness. You have been hearing about the loss of ice in the Arctic, which is where those poor polar bears are having a bounty eating the freshly unearthed tundra flora.

Plus the Arctic seems to have a major volcanic eruption happening underneath its ice shelf causing additional melting.

Many volcanoes are going active now around the ring of fire. Wonder what man could have done to have caused that? sarc off....