Japanese financial stocks, as especially the megabanks, have been in a positive feedback loop of balance sheet and income statement translation gains from a weaker yen and the prospect of increased loan volumes and interest earnings from higher domestic loan demand.

FORBES: Whither Japan Stocks: Is the Bullish Case Still Intact?

Melting on the ice sheet's surface acts as a feedback mechanism, Dr van den Broeke explained, because the liquid water absorbs more and reflects less of the incoming solar radiation - resulting in a heating of the ice.

BBC: Greenland ice loss 'accelerating'