MESOSCALE CONVERGENCE AND CUMULUS CONVECTION
Keywords:Meteorology, Atmospheric physics
AbstractThe paper deals with physical mechanisms by which mesoscale convergence of order 10^-4 /s can enhance development of convective clouds. After recalling some long known processes like direct triggering of convective updrafts or activation of latent instability, the effectiveness of which maybe often problematic, the paper tums attention to less known mechanisms like lifting of the top of planetary boundary layer and prolongation of activity of surface sources of updrafts. Effectiveness of these mechanisms is quantitatively estimated and their relation to feedback with mesoscale convective structures and gravity waves is shortly mentioned.
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