Anticyclone
A anticyclone is an atmospheric zone of circulation around a center of high pressure. Their direction of rotation is related to the Force of Coriolis: they turn in the time direction in the northern Hemisphere and the direction anti-clockwise in the Southern hemisphere. It is what also defines the anticyclonic circulation . The formation of an anticyclone names Anticyclogénèse and its dissipation Anticyclolyse.
Winds around an anticyclone
Except for a rather good approximation, one can say that the force and the direction of the wind are influenced on the one hand by the horizontal force of Atmospheric pressure and on the other hand by the Force of Coriolis. In the few first hundreds of meters above the ground, the force of Friction also acts on the wind significantly.The air is initially put moving high towards the low pressures then the force of Coriolis deviates it towards the line in the northern hemisphere but on the left in that of the south. When these forces reached their balance, the wind more or less parallel to blows the Isobare S (line of equal pressure) with the lowest pressures on the left in the northern Hemisphere, and on the right in that of the south. As an anticyclone is a zone of maximum of pressure, circulation around this one will be time in the northern and anti-clockwise hemisphere in the other. Close to surface, the component of friction slows down the wind and makes change the flow giving him a light component towards the lower pressures.
Associated time
The anticyclones generally bring good weather and clear ciels because the vertical movement of the air is there to the bottom (subsidence). This atmospheric dynamics makes so that the air with average altitudes is heated because it undergoes a adiabatic compression and becomes relatively hot and dry there, and thus without clouds| Random links: | Bry-sur-Marne | Proteus (play) | Mangemorts | Chersonèsos | Champions of France of swimming of deep sea freestyle | Système_du_même_rang_écliptique |