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RISFine Structure of Cloud Droplet Concentration as Seen from the Fast-FSSP Measurements. Part II: Results of In Situ Observations
Publisher: American Meteorological Society
Abstract: A new feature of cloud structure has been discovered while analyzing the measurements obtained in situ in 57 clouds by the Fast Forward-Scattering Spectrometer Probe (FSSP). By means of a novel technique of statistical ...
Fine Structure of Cloud Droplet Concentration as Seen from the Fast-FSSP Measurements. Part I: Method of Analysis and Preliminary Results
Publisher: American Meteorological Society
Abstract: A statistical analysis of a series of droplet arrival times measured by the Fast Forward-Scattering Spectrometer Probe (FSSP) during aircraft flights in cumulus clouds was conducted. The main purpose of the analysis was ...
Drop Inertia and Its Contribution to Turbulent Coalescence in Convective Clouds. Part I: Drop Fall in the Flow with Random Horizontal Velocity
Publisher: American Meteorological Society
Abstract: The results of simulated drop fall in horizontal flows with the vertical shear of different kinds (constant linear, periodic, and with random velocity distribution) are presented. It is shown that the inertia of drops is ...
Collisions of Small Drops in a Turbulent Flow. Part I: Collision Efficiency. Problem Formulation and Preliminary Results
Publisher: American Meteorological Society
Abstract: A mathematical approach to the calculation of the collision efficiency between droplets within a turbulent flow is suggested. The problem of drops? hydrodynamic interaction is reconsidered taking into account additional ...
Effects of Turbulent Mixing on the Structure and Macroscopic Properties of Stratocumulus Clouds Demonstrated by a Lagrangian Trajectory Model
Publisher: American Meteorological Society
Abstract: he role of turbulent mixing in the formation of the structure of stratocumulus clouds is investigated using a Lagrangian?Eulerian parcel cloud model. The model contains approximately 2000?5000 adjacent parcels with the ...
Collision Efficiency of Drops in a Wide Range of Reynolds Numbers: Effects of Pressure on Spectrum Evolution
Publisher: American Meteorological Society
Abstract: An approach is developed enabling one to calculate the collision efficiency and the collision kernel within a wide range of the Reynolds numbers (from 0 to 100) corresponding to drops up to 300-?m radii. The flow velocity ...
Microphysical Structure of the Marine Boundary Layer under Strong Wind and Spray Formation as Seen from Simulations Using a 2D Explicit Microphysical Model. Part I: The Impact of Large Eddies
Publisher: American Meteorological Society
Abstract: he effects of large eddies (LE) on the marine boundary layer (MBL) microphysics and thermodynamics is investigated using a 2D Lagrangian model with spectral bin microphysics including effects of sea spray. The 600 m ? 400 ...
Collisions of Small Drops in a Turbulent Flow. Part II: Effects of Flow Accelerations
Publisher: American Meteorological Society
Abstract: The effects of Lagrangian acceleration on collision efficiency and collision kernels of small cloud droplets in a turbulent flow are investigated using the results of the recent laboratory experiments by La Porta et al., ...
Analytical Investigation of Glaciation Time in Mixed-Phase Adiabatic Cloud Volumes
Publisher: American Meteorological Society
Abstract: laciation in mixed-phase adiabatic cloudy parcels is investigated analytically using two new equations: the equation for coexistence of liquid water and ice and the mass balance equation. The analysis of glaciation time ...
Collisions of Cloud Droplets in a Turbulent Flow. Part V: Application of Detailed Tables of Turbulent Collision Rate Enhancement to Simulation of Droplet Spectra Evolution
Publisher: American Meteorological Society
Abstract: The present study is a continuation of the series of studies dedicated to the investigation of cloud droplet collisions in turbulent flow with characteristics that are typical of real clouds. Detailed tables of collision ...