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Cirrus Cloud Simulation Using Explicit Microphysics and Radiation. Part II: Microphysics, Vapor and Ice Mass Budgets, and Optical and Radiative Properties
Publisher: American Meteorological Society
Abstract: The 2D/3D cloud model complex with explicit microphysics and radiation described in Part I is used to simulate the development of a midlatitude cirrus cloud, including interaction with radiation. To account for the effects ...
Toward the Theory of Stochastic Condensation in Clouds. Part I: A General Kinetic Equation
Publisher: American Meteorological Society
Abstract: In order to understand the mechanisms of formation of broad size spectra of cloud droplets and to develop a basis for the parameterization of cloud microphysical and optical properties, the authors derive a general kinetic ...
Toward the Theory of Stochastic Condensation in Clouds. Part II: Analytical Solutions of the Gamma-Distribution Type
Publisher: American Meteorological Society
Abstract: The kinetic equation of stochastic condensation derived in Part I is solved analytically under some simplifications. Analytical solutions of the gamma-distribution type are found using an analogy and methodology from quantum ...
Kinetics of Cloud Drop Formation and Its Parameterization for Cloud and Climate Models
Publisher: American Meteorological Society
Abstract: To study the kinetics of drop nucleation in clouds, the integro?differential equation for integral water supersaturation in cloud is derived and analyzed. Solving the supersaturation equation with an algebraic form of the ...
Parameterization of Cloud Drop Activation Based on Analytical Asymptotic Solutions to the Supersaturation Equation
Publisher: American Meteorological Society
Abstract: Toward improving parameterization of cloud droplet activation in cloud and climate models, the integro?differential equation for supersaturation is solved analytically for the algebraic size spectrum of the cloud condensation ...
The Theory of Ice Nucleation by Heterogeneous Freezing of Deliquescent Mixed CCN. Part I: Critical Radius, Energy, and Nucleation Rate
Publisher: American Meteorological Society
Abstract: This paper extends previous work on the theory of heterogenous ice nucleation. The goals of this analysis are to explain empirical observations of ice nucleation and to provide a suitable framework for modeling and ...
Fall Velocities of Hydrometeors in the Atmosphere: Refinements to a Continuous Analytical Power Law
Publisher: American Meteorological Society
Abstract: This paper extends the previous research of the authors on the unified representation of fall velocities for both liquid and crystalline particles as a power law over the entire size range of hydrometeors observed in the ...
Terminal Velocities of Droplets and Crystals: Power Laws with Continuous Parameters over the Size Spectrum
Publisher: American Meteorological Society
Abstract: This paper presents a unified treatment of cloud particle fall velocities for both liquid and crystalline cloud particles over the entire size range observed in the atmosphere. The fall velocity representation is formulated ...
The Theory of Ice Nucleation by Heterogeneous Freezing of Deliquescent Mixed CCN. Part II: Parcel Model Simulation
Publisher: American Meteorological Society
Abstract: The new theory of ice nucleation by heterogeneous freezing of deliquescent mixed cloud condensation nuclei (CCN) presented in Part I is incorporated into a parcel model with explicit water and ice bin microphysics to ...
Analytical Solutions to the Stochastic Kinetic Equation for Liquid and Ice Particle Size Spectra. Part I: Small-Size Fraction
Publisher: American Meteorological Society
Abstract: The kinetic equation of stochastic condensation for cloud drop size spectra is extended to account for crystalline clouds and also to include the accretion?aggregation process. The size spectra are separated into small and ...