Amundsen navigated what is normally one of the most ice-choked parts of the Northwest Passage during the summer of 1905 - in ice free water.
Hansen says that 1905 was one of the coldest years on record. Hansen also tells us that polar amplification exaggerates warmth and cold in the Arctic.
The graph above isn’t worth the toilet paper it is printed on. It is a political document used to perpetrate fraud.