MARK KAUFMAN/MASHABLE–A big swath of Siberia has been way, way warmer than normal this year. Through May 2020, temperatures in the region averaged about 13 degrees Fahrenheit, or 7 degrees Celsius, above average, with some places experiencing record warmth during this period.

The conspicuous warm spot — seen on climate maps produced by NASA, NOAA, and other agencies — has had quite a run. During each of the past five months, temperatures in this region were much higher than average …