In the Russian city of Verkhojansk in Siberia is on Sunday measured 38 degrees.

Siberia has the past month been subjected to a varmebølge, that creates the rare temperatures for the part of the world. The area is especially known for the ‘siberian cold’, as there are several places in Siberia may be 60 degrees of frost in January.

the Temperature in the Arctic is increasing the fastest, because ocean currents carry heat toward the poles and get the ice and snow to melt. As a result, the Russian cities in the Arctic experienced extraordinary temperatures, writes The Guardian.

In Khatanga there is usually zero degrees at this time of year. 22. may was measured to 25 degrees from the same place.

– It is undoubtedly an alarming sign, but not only may was unusually warm in Siberia. Throughout the winter and spring had repeated period with temperatures that were higher than average, says Freja Vamborg, who is senior researcher at the Copernicus, to The Guardian.

The rare temperatures in the northwestern part of Siberia will only take place one time out of 100,000 years, if it were not for man-made global warming, says Martin Stendel at the Danish Meteorological Institute according to the Norwegian media, the Newspaper.

– Some of our cities were built north of the arctic circle on the permafrost. If it starts to thaw, so can you imagine, what consequences it will have. This is very serious, said Vladimir Putin is already back in december, which also saw exceptionally high temperatures.

The melting permafrost was the fault of a large oil spill in may, which got the president to declare a state of emergency.

Besides, forest fires destroyed large areas of forest, and so had large swarms of moths, which eat the wood, also be part of the explanation for the warming.