source region
source region (for air masses) Extensive areas of essentially uniform surface conditions over land or water, typically of large-scale air subsidence and lateral divergence, where air masses develop their initial properties.
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Air Masses And Fronts , An air mass is an extensive body of air that has a relatively homogeneous temperature and moisture content over a significant altitude. Air masses ty… Tropical Air , tropical air Air masses whose characteristics originate from a tropical source. Broadly, these comprise: (a) maritime tropical air, originating over… Air Mass , air mass(airmass) A large body of air (sometimes of oceanic or continental proportions) that is identified primarily by an approximately constant wet… Fog , Fog is caused by the condensation of water at or near Earth's surface. The atmosphere is obscured—essentially by cloud formation—near the surface and… Air Sac , air sac Anticyclone , anticyclone An area or system of high atmospheric pressure that has a characteristic pattern of air circulation, with subsiding air and horizontal di…
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source region