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| Keywords: Rain Shadow Effect caused by Orographic Lift.png en Adiabatic cooling by rising air masses occurs in one of two ways upward convection or movement up a physical barrier see figure The global scale atmospheric convections cells Hadley Ferrell and Polar cause air masses to rise generating precipitation due to adiabatic cooling As an air mass reaches the continent from an ocean or other large body of water the air mass is forced upward in a process known as orographic lift If the rise of continent is great enough the air mass will lose all or nearly all of its moisture as precipitation on the windward side of the mountain chain As the air passes over the mountain chain it is stripped of its moisture creating very dry conditions on the leeward side of the mountain This process is known as the rain shadow effect and is responsible for creating some of the world ™s driest deserts Chile ™s Atacama Desert is the driest desert in the world due to a double rain shadow effect from two very tall mountain chain some rain stations have never received measurable precipitation The Sahara Desert is actually made much drier due the the presence of two rain shadow effects as well Rain shadow deserts in N American include the Mohave Great Basin Sonoran and Chihuahuan deserts 2015-03-03 own Thebiologyprimer other versions cc-zero Uploaded with UploadWizard Rain shadow Adiabatic process Wind diagrams | ||||
