Polar Anticyclone ( UPSC Prelims)

News Context

High-pressure wind systems are generated by the intense cooling of surface air layers.
 Formation:
  ● Surface cooling causes the air to become dense, leading it to sink.  
  ● High-altitude air moves in to replace the sinking air, which increases the air mass and builds high pressure.  
 These processes enhance the mass of air above the surface, resulting in the creation of an anticyclone.
      ○ An anticyclone is a high-pressure area encircled by low-pressure zones, with winds flowing outward from the center.
  ● Air circulation: In the Northern Hemisphere, it moves clockwise, while in the Southern Hemisphere, it moves anti-clockwise.