A weather system with higher pressure in the centre than in its surroundings. An anticyclone is characterised on a weather chart by completely closed isobars, roughly circular in form, spreading out from the central high pressure area. The presence of an anticyclone system usually results in fine, cloudless weather.


The science and study of the physics, chemistry, and dynamics of the atmosphere and atmospheric phenomena, and the effects of the atmosphere upon the Earth. A meteorologist is a scientist who studies meteorology. The term was first used by Aristotle.