Ice Microdynamics

Ice Microdynamics

1st Edition - July 29, 2002

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  • Author: Pao Wang
  • eBook ISBN: 9780080508443

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Description

Atmospheric 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.

Table of Contents

  • Ice Particles in the Atmosphere
    Ice Particles - a Personal Perspective
    Some Historical Notes on the Knowledge of Ice Particles in Ancient China
    The Hexagonal Shape of Snowflakes
    Protection of Crops from the Cold
    Observations of Frost-Free and Dew-Free Situation in High Mountains
    A Brief Summary of the Following Chapters

    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 Ensemble of Planar Hexagonal Ice Crystals
    Mathematical Expressions Describing the Three-Dimensional Shapes of Ice Crystals
    Three-Dimensional Mathematical Expression Describing Planar Hexagonal Crystals
    Three-Dimensional Mathematical Expressions Describing Spatial Dendrites and Rosettes
    Mathematical Expressions Describing Conical Hydrometeors
    Mathematical Formula - 2-D Cross-Section
    Fitting Procedure and Examples
    Examples and Discussions
    Cross-Sectional Area, Volume, and Area of the Surface of Revolution
    3-D Expression of Conical Particles with Circular and Elliptical Cross-Sections

    Hydrodynamics of Small Ice Particles
    Fall Attitude of Ice Particles
    Review of Previous Studies
    The Physics and Mathematics of Unsteady Flow Fields Around Non-Spherical Ice Particles
    The Numerical Scheme
    Results and Discussions
    Remarks on the Flow Fields Around Larger Falling Ice Particles


    Vapor Diffusion, Ventilation, and Collision Efficiencies of Ice Crystals
    Introduction
    Vapor 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
    Efficiency of Ice Plates Collecting Aerosol Particles
    Efficiency 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


    Section 6 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 Discussions

    Appendix A. Area of an Axial Cross-section
    Appendix B. Calculation of Volume
    Appendix C. Closed Form Expression of the Conical Volume
    References
    List of Figures

Product details

  • No. of pages: 273
  • Language: English
  • Copyright: © Academic Press 2002
  • Published: July 29, 2002
  • Imprint: Academic Press
  • eBook ISBN: 9780080508443

About the Author

Pao Wang

Affiliations and Expertise

University of Wisconsin-Madison

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