Anticyclones
The opposite of a cyclone, an anticyclone, is a weather pattern consisting of a broad region of high air pressure around which air circulates clockwise in the Northern Hemisphere. In an anticyclone, air descends near the center of the high, and the weather tends to be fair.
Anticyclones in the Arctic
A persistent anticyclone or high pressure ridge called the Arctic High, also known as the Beaufort High, sits over the Beaufort Sea and the Canadian Archipelago in winter and spring.
Eastern Siberia is a center of frequent winter anticyclones, and these are known climatically as the Siberian High. Strong cooling in this region results in the lowest air temperatures in the Northern Hemisphere. In the winter and spring, anticyclones in the Russian Arctic move mainly from the circumpolar regions through the eastern parts of the Barents and Kara seas. Some also move into the Barents Sea from the northern coast of Greenland. Across the Arctic, anticyclones are less common and generally weaker in summer.