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The Earth's atmospheric circulation varies from year to year, but the large-scale structure of its circulation remains fairly constant. The smaller-scale weather systems – mid-latitude depressions , or tropical convective cells – occur chaotically, and long-range weather predictions of those cannot be made beyond ten days in practice, or a ...
The Hadley cell, also known as the Hadley circulation, is a global-scale tropical atmospheric circulation that features air rising near the equator, flowing poleward near the tropopause at a height of 12–15 km (7.5–9.3 mi) above the Earth's surface, cooling and descending in the subtropics at around 25 degrees latitude, and then returning ...
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The source for the diagram given in the report is U.S. Global Change Research Program: Climate Science Special Report, Fourth National Climate Assessment (NCA4), Volume I, chapter 5.1. https://science2017.globalchange.gov/ Author: This figures, “Atmospheric Circulation”, was provided by Judith Perlwitz.
An idealised view of three pairs of large circulation cells. Atmospheric circulation is the large-scale movement of air through the troposphere, and the means (with ocean circulation) by which heat is distributed around Earth. The large-scale structure of the atmospheric circulation varies from year to year, but the basic structure remains ...
A simple general circulation model (SGCM) consists of a dynamic core that relates properties such as temperature to others such as pressure and velocity. Examples are programs that solve the primitive equations , given energy input and energy dissipation in the form of scale-dependent friction , so that atmospheric waves with the highest ...
Brewer–Dobson circulation refers to the global atmospheric circulation pattern of tropical tropospheric air rising into the stratosphere and then moving poleward as it descends. [1] The basics of the circulation were first proposed by Gordon Dobson [2] [3] and Alan Brewer. [4] The term "Brewer–Dobson circulation" was first introduced in ...
The ACC is the dominant circulation feature of the Southern Ocean and, at approximately 125 Sverdrups, the largest ocean current. [12] In the northern hemisphere, the Gulf Stream , part of the North Atlantic Subtropical Gyre , has led to the development of strong cyclones of all types at the base of the Westerlies, both within the atmosphere ...