Wang P. Ice Microdynamics

Academic Press, 2002. — 273 p. — ISBN: 9780080508443, ISBN: 9780127346038Atmospheric ice particles play crucial roles in cloud and storm dynamics, atmospheric chemistry, climatological processes, and other atmospheric processes. Ice Microdynamics introduces the elementary physics and dynamics of atmospheric ice particles in clouds; subsequent sections explain their formation from water vapor, why ice crystal shape and concentration in cirrus clouds influence the heating of air, and describe how ice crystals cleanse the atmosphere by scavenging aerosol particles. Pao Wang's lucid writing style will appeal to atmospheric scientists, climatologists, and meteorologists with an interest in understanding the role of ice particles in the atmosphere of our planet.Ice Particles in the Atmosphere
Ice Particles - A Personal Perspective
Some Historical Notes on the Knowledge of Ice Particles in Ancient China
A Brief Summary of the Following Sections
Mathematical Descriptions of Ice Particle Size and Shape
Size Distribution versus Size-Shape Distributions
Mathematical Expression Describing the Two-Dimensional Shapes of Hexagonal Ice Crystals
Approximating an Exact Hexagonal Plate
Two-Dimensional Characterization of an Ensembl e of Planar Hexagonal Ice Crystals
Mathematical Expressions Describing the Three-Dimensiona lShapes of Ice Crystals
Mathematical Expressions Describing Conical Hydrometeors
Hydrodynamics of Ice Particles
Fall Attitude of Ice Particles
Review of Previous Studies
The Physics and Mathematics of Unsteady Flow Fields around Nonspherical Ice Particles
The Numerical Scheme
Results and Discussion
Vapor Diffusion, Ventilation, and Collisional Efficiencies of Ice CrystalsVapor Diffusion Fields around a Stationary Columnar Ice Crystal
Ventilation Coefficients for Falling Ice Crystals
Collision Efficiencies of Ice Crystals Collecting Supercooled Droplets
Scavenging and Transportation of Aerosol Particles by Ice Crystals in Clouds
Importance of Aerosol Particles in the Atmosphere
Physical Mechanisms of Precipitation Scavenging
The Theoretical Problem of Ice Scavenging of Aerosol Particles
Physics and Mathematics of the Models
Efficiencies of Ice Plates Collecting Aerosol Particles
Efficiencies of Columnar Ice Crystals Collecting Aerosol Particles.
Comparison of Collection Efficiency of Aerosol Particles by Individual Water Droplets, Ice Plates, and Ice Columns
Experimental Verification of Collection Efficiencies Evolution of Ice Crystals in the Development of Cirrus Clouds
Cirrus Clouds, Radiation, and Climate
Physics of the Model
Design of the Present Simulation Study
Numerics of the Model
Results and Discussion
Appendix A. Area of an Axial Cross Section
Appendix B. Calculation of Volume
Appendix C. Closed-Form Expression of the Conical Volume