Patrick Bay ice caps would take place over five years, but it's actually only taken three.
By 2015, the ice caps were only five percent the size of what they were in 1959.
The two ice caps that have vanished are part of a group on the Hazen Plateau, in the north of Ellesmere Island in Nunavut, way up in the Arctic Archipelago – one of the most northerly points of Canada.
Patrick Bay pair, the Murray and Simmons ice caps, are faring better due to their higher elevation – in 2015 their ice cover was at 39 percent and 25 percent respectively, compared with the 1959 figure.
"But the death of those two little caps that I once knew so well has made climate change very personal