The Hierarchy of Motion Systems over Large Plateaus.
COLORADO STATE UNIV FORT COLLINS DEPT OF ATMOSPHERIC SCIENCE
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Motion systems of various scales are caused by the differential heating of plateaus and the surrounding plains. On the largest scales, monosoonal systems and their interannual variability are considered. Comparisons are mde between the effects of the Western Plateau of North America and the Plateau of Tibet. Synoptic-scale systems are strongly affected by the plateaus of the northern hemisphere. An example of cyclogenesis over Eastern Tibet is given through a numerical experiment. During heating effects of the Western Plateau of North America cause a large-scale plateau circulation system to develop. This system has a decisive impact on teh diurnal variability of thunderstorm activity over the plateaus and over the plains to the east. It is shown that local heating and cooling by detailed topographic features can interact with the diurnal plateau circulation system.