The Arctic seems to be warming up. Reports from those who sail the seas of the eastern Arctic, all point to a radical change in climatic conditions, and hitherto unheard of high temperatures in that part of the earth's surface.
…so little ice has never before been noted. The expedition all but established a record, sailing as far north ns 81 ° 29' in ice-free water. This is the farthest north ever reached with modern oceanographic apparatus.
He says that he first noted warmer conditions [four years ago], that since that time it has steadily gotten warmer, and that today the Arctic of that region is not recognizable as the same region of [54 years ago] to [five years ago].
Many old landmarks are so changed as to be unrecognizable. Where formerly great masses of ice were found there are now often moraines, accumulations of earth and stones. At many points where glaciers formerly extended far into the sea they have entirely disappeared.
NOAA source document
Turns out this was in 1922.