The fastest-warming place on the planet today is the Arctic. This is confirmed by temperature records, as well as the testimony of the Sami people of northern Norway, who live very close to the environment.
Listen to these people talking about the changes.
The Sami have noticed that it has become much warmer in winter, with even rain in December, and also it is much windier. The thickness of the ice on frozen rivers is much reduced, and trees are starting to grow on the tundra, affecting the ability of reindeer to dig in the snow for lichen in winter.