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RISCoalescence and Breakup-Induced Oscillations in the Evolution of the Raindrop Size Distribution
Publisher: American Meteorological Society
Abstract: Models or the coalescence/breakup process yield drop number distributions that approach equilibrium but the number density often is not a monotonic function of time. In some cases, the small-raindrop portion of the ...
Parameterization of the Evolving Drop-Size Distribution Based on Analytic Solution of the Linearized Coalescence-Breakup Equation
Publisher: American Meteorological Society
Abstract: Analytic solution of the linearized coalescence-breakup equation is used as a basis for parameterizing the evolving drop-size distribution. The linearized coalescence-breakup equation is formulated using only a small number ...
The Effects of Filament, Sheet, and Disk Breakup upon the Drop Spectrum
Publisher: American Meteorological Society
Abstract: The coalescence/breakup formulas introduced by Low and List included a new formulation of the coalescence efficiency and a new formulation of the fragment distribution function P, which is written as a weighted sum of three ...
Reversals in Evolving Raindrop Size Distributions Due to the Effects of Coalescence and Breakup
Publisher: American Meteorological Society
Abstract: Numerical solutions of the coalescence/breakup equation often produce drop size distributions that move away from equilibrium before turning back. In particular, distributions evolving from Marshall?Palmer form rapidly ...
Analysis and Parameterization of the Combined Coalescence, Breakup, and Evaporation Processes
Publisher: American Meteorological Society
Abstract: A parameterization of raindrop coalescence and breakup has been extended to include evaporation. The parameterization is developed through analysis of accurate numerical solutions of the coalescence/breakup/evaporation ...
Structural Stability of the Coalescence/Breakup Equation
Publisher: American Meteorological Society
Abstract: An analysis of the structural stability of the coalescence/breakup equation is performed to determine the degree to which changes in the equation's formulation can affect the solution. The work was motivated by speculation ...
Vertical Variation of the Steady-State Drop Spectrum in a One-Dimensional Rain Shaft
Publisher: American Meteorological Society
Abstract: Past work has provided thorough analysis of the coalescence/breakup process in a ?box model? setting in which the drop size distribution is assumed invariant with height. In this work, the analysis is extended to examine ...
Some Essential Details for Application of Bleck's Method to the Collision-Breakup Equation
Publisher: American Meteorological Society
Abstract: Computational problems have been reported in the literature regarding application of Bleck's method to the collision-breakup equation. It is found that straightforward calculation of the Bleck integrals can involve an ...
Mass Conservation Considerations in Analytic Representation of Raindrop Fragment Distributions
Publisher: American Meteorological Society
Abstract: Model formulation of drop breakup requires a set of analytic functions to describe the size distribution of water fragments that result from the collision of two raindrops of arbitrary diameter. The set of fragment ...
Use of Holography for Airborne Cloud Physics Measurements
Publisher: American Meteorological Society
Abstract: The use of the holographic cloud particle imaging system developed by the Cloud Physics Branch of the Meteorological Office and carried on the C-130 Hercules aircraft of the Meteorological Research Flight (MRF) has hitherto ...