Global Convection Currents
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In meteorology, global convection currents are a form of small to high speed winds and one of the many forms of convection on Earth. These winds can be anything from a few knots to in the 80-100 knot range. These winds are caused by natural convection currents. These convection currents are caused by a difference in pressure and heat in the tropical and Antarctic/Arctic areas on the earth.
Convection Currents
Convection is the internal movement of currents within fluids (i.e. liquids and gases). It cannot occur in solids because the particles are unable to flow freely. The most common cause of internal movement is a variation in density due to a transfer of heat. Other sources of density variations, such as variable composition (for example salinity), or from the application of an external motive force can cause currents. Current movement may be invisibly slow, or it may be as fast as a tornado or twister. Convection occurs in atmospheres, oceans and planetary mantles.
Resources
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