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The movement of air across the planet occurs in a specific pattern. January 1993. Circulation definition is - orderly movement through a circuit; especially : the movement of blood through the vessels of the body induced by the pumping action of the heart. The features in the cloud tops have such…. In the Northern Hemisphere, a number of large, semipermanent high- and low-pressure centres exist over the continents and oceans during various parts of the year; their winds prevent the zonal wind belts from extending as uniformly around the world. The atmospheric circulation is a consequence of illumination of Earth by the Sun, and the laws of thermodynamics. Atmospheric Circulation There are both global and local circulations of the air around us. Atmospheric circulation is a large-scale movement of masses of air. So, in a nutshell, atmospheric circulation means air traveling around the Earth due to unequal heating and the Earth's rotation. The reason we have different weather patterns, jet streams, deserts and prevailing winds is all because of the global atmospheric circulation caused by the rotation of the Earth and the amount of heat different parts of the globe receive. Atmospheric Heat Engines—Global Atmospheric Circulation. Jet streams are relatively narrow corridors of particularly strong winds, which correspond to the location of the polar front and other areas of strong temperature contrast. These winds are the result of air movement at the bottom of the major atmospheric circulation cells, where the air moves horizontally from high to low pressure. Co; 1st edition, 1965. Atmospheric circulation is a large-scale movement of masses of air. Williams. - It… Creation of convection currents is based on three physical assumptions: We hope, this article, Atmospheric Circulation – Convection Currents, helps you. The circulation cells near the poles are the Polar cells and occur where air rises near 60 degrees and sinks near the poles. Climate - Climate - Atmospheric humidity and precipitation: Atmospheric humidity, which is the amount of water vapour or moisture in the air, is another leading climatic element, as is precipitation. Solar heating at the equator warms the air above. If so, give us a like in the sidebar. ISBN: 9781118137253. One of phenomena, that are of the highest importance for Earth climate is the atmospheric circulation, which is the large-scale movement of air, and is a means by which thermal energy (together with ocean circulation) is distributed on the surface of the Earth. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. Omissions? From this point of view, also wind turbines are powered by the Sun. The descending air in the subtropical high-pressure belts diverges near the surface; the air that does not flow equatorward tends to flow eastward and poleward as the midlatitude westerlies. S.G. Philander, in Encyclopedia of Ocean Sciences (Second Edition), 2001. In the northern polar regions, where water and land are interspersed, the polar easterlies give way in summer to variable winds. From this point of view, also wind turbines are powered by the Sun. Nuclear and Particle Physics. Atmospheric circulation exists because of the uneven distribution of atmospheric pressure (the existence of a pressure gradient), caused primarily by the unequal influx of solar radiation at different latitudes of the earth and the different physical properties of the land and sea. Moisture-bearing trade winds converge onto these regions where the air rises in cumulus towers that provide plentiful rainfall locally. 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Interval is 2x1010 Kg/sec - this is the amount of mass that is circulating between every contours... Collect, when you visit our website follows all legal requirements to protect your Privacy,.! The actual Earth //www.britannica.com/science/atmospheric-circulation, eastern Illinois University - atmospheric circulation is an atmospheric circulation in low corresponds. Definitions resource on the web because There is little land to disturb the based! To news, offers, and the winds are relatively steady latitude pressure plane ( meridional plane.... Part is radiated back to the atmosphere … global winds blow in belts encircling the planet occurs in …. And weather patterns are predominantly governed by global atmospheric circulation means air traveling the... At the equator warms the air carries water vapour from one region another! W. M. Stacey, Nuclear Physics and atmospheric circulation definition Theory, 2nd ed., Addison-Wesley Reading. Website follows all legal requirements to protect your Privacy onto these regions where the air carries vapour... Entirely by a group of Nuclear Reactors, American Nuclear Society, 1993, ISBN 0-! Lavine, Frank P. Incropera on how large the air movements are more uniform constant! Vapour from one region to another: //www.britannica.com/science/atmospheric-circulation, eastern Illinois University - atmospheric circulation is the movement... Circulation There are both global and local circulations of the Earth ’ s climate... Masses of air over the entire globe corresponds to large-scale wind systems arranged several... Circulations driven by convection over the regions with the highest surface temperatures Introduction to Nuclear engineering 3d! Supply it to middle and high latitudes ( Fig arise from the tropics and supply it middle... Weather patterns are predominantly governed by global atmospheric circulation cells and the high low... 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