Location of the high-pressure cells that affect South Africa. In winter, the subtropical circulation is more strongly dominated by the zonally averaged flow and its interactions with orography. What is what? More example sentences. Definition. Everything you always wanted to know. anticyclone definition: 1. an area of high atmospheric pressure that causes calm weather: 2. an area of high atmospheric…. The center of these systems is a region of calm while their borders have more intense winds. Subtropical high definition, a system of high atmospheric pressure, as the Azores high and the North Pacific high, that prevails over an ocean at latitudes of about 30° N and S. See more. The Azores High (Portuguese: Anticiclone dos Açores) also known as North Atlantic (Subtropical) High/Anticyclone or the Bermuda-Azores High, is a large subtropical semi-permanent centre of high atmospheric pressure typically found south of the Azores in … Effects of surface-based anticyclones include clearing skies as well as cooler, drier air. Term. Anticyclones are associated with calm, fine weather. High pressure systems have small pressure gradients (ie the air pressure doesn't change rapidly). Four factors together result in anticyclone development. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Effects of surface-based anticyclones include clearing skies as well as cooler, drier air. They can be seen in the streamfunction fields shown in Figs. In winter, the subtropical anticyclone is located near 33 [degrees] S off the coast of central Chile, and steers westerly cyclonic storms into northern Patagonia. Anticyclone definition is - a system of winds that rotates about a center of high atmospheric pressure clockwise in the northern hemisphere and counterclockwise in the southern, that usually advances at 20 to 30 miles (about 30 to 50 kilometers) per hour, and that usually has a diameter of 1500 to 2500 miles (2400 to 4000 kilometers). A weather system with high barometric pressure at its centre, around which air slowly circulates in a clockwise (northern hemisphere) or anticlockwise (southern hemisphere) direction. 1a,b , noting that in the Northern (Southern) Hemisphere, an anticyclone appears here as a maximum (minimum) in streamfunction. Definition of anticyclones. 3.10b). The anticyclonic high-pressure systems over the southern-hemisphere, subtropical oceans have a significant influence on regional climate. Cyclones and anticyclones are regions of relatively low and high pressure, respectively. In this live Gr 12 Geography show we take a look at Subtropical Anticyclones & Associated Weather Conditions. Anticyclone definition: An anticyclone is an area of high atmospheric pressure which causes settled weather... | Meaning, pronunciation, translations and examples The low-level circulation over the subtropical oceans is characterized by vast subtropical anticyclones (subtropical highs), which exist year-round and occupy about 40% of the earth's surface. Areas of sinking air which result in high pressure are called anticyclones (the opposite to an anticyclone is the cyclone or depression, which is covered next). (meteorology) winds spiraling outward from a high pressure center; circling clockwise in the northern hemisphere and counterclockwise in the southern. The axis of each belt has a small, annual, meridional fluctuation. 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