A Second-Order Bulk Boundary-Layer Model

摘要: Abstract Bulk mass-flux models represent the large eddies that are primarily responsible for turbulent fluxes in planetary boundary layer as convective circulations, with an associated mass flux. In order such to be useful, it is necessary determine fractional area covered by rising motion circulations. This fraction can used estimate of cloud amount, under certain conditions. “Matching” conditions have been developed relate flux ventilation and entrainment fluxes. These based on conservation equations scalar means variances layers. Methods presented both The requirement variance balance relax “well-mixed” assumption. vertical structures mean state determined analytically. Several aspects this simple m...