The Azores High (also known as North Atlantic (Subtropical) High/Anticyclone or for short, NASH, the Bermuda-Azores High, or the Bermuda High/Anticyclone in the United States) is a large subtropical semi-permanent centre of high atmospheric pressure typically found south of the Azores in the Atlantic Ocean, at the Horse latitudes. It forms one pole of the North Atlantic oscillation, the other being the Icelandic Low. The system influences the weather and climatic patterns of vast areas of North Africa and Europe, and to a lesser extent, eastern North America. The aridity of the Sahara Desert and the summer drought of the Mediterranean Basin is due to the large-scale subsidence and sinking motion of air in the system. The Azores High is associated with bright, sunny weather and rainfall inhibition like almost all high pressure systems.