Cirrus Crystal Terminal Velocities

摘要: Abstract Cirrus crystal terminal velocities are of primary importance in determining the rate transport condensate from upper- to middle-tropospheric levels and profoundly influence earth’s radiation balance through their effect on buildup or decay cirrus clouds. In this study, laboratory field-based drag coefficient data, as well analytical descriptions shapes, used derive more physically based expressions for crystals than have been available past. Polycrystals—often bullet rosettes—are shown be dominant types synoptically generated cirrus, with columns present varying but relatively large percentages, depending cloud. The two critical parameters needed calculate velocity ratio mass cross-sectional area normal fall direction. Using measurements calculations, it is that coefficients theory la...