Final technical Report DE-FG02-06ER65187

Simulations from the University of Wisconsin Non-Hydrostatic Modeling System (UW-NMS) along with those from other models indicate a strong tendency to overproduce ice, resulting in a decimation of the liquid portion of mixed-phase stratus through the Bergeron-Findeissen process. Immersion freezing w...

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Bibliographic Details
Main Author: Eloranta, Edwin
Other Authors: DOE, Chicago operations office
Format: Report
Language:English
Published: University of Wisconsin System. Board of Regents. 2009
Subjects:
Freezing
Liquids
Data
Aerosols
Simulation
22 General Studies Of Nuclear Reactors
Mass
Cloud Model Validation
High Spectral Resolution Lidar
Ice Nucleation
Validation
Particle Size
Resolution
Wind
Wisconsin Cloud Model Validation
Height
Radar
Orders
Density
Thickness
Bases
Production
Particles
54 Environmental Sciences
Optical Radar
Arctic
Online Access:https://doi.org/10.2172/959345
https://digital.library.unt.edu/ark:/67531/metadc933208/
Description
Summary:Simulations from the University of Wisconsin Non-Hydrostatic Modeling System (UW-NMS) along with those from other models indicate a strong tendency to overproduce ice, resulting in a decimation of the liquid portion of mixed-phase stratus through the Bergeron-Findeissen process. Immersion freezing was illustrated to be a major contributor to ice production within these cloud layers, and aerosol properties were illustrated to be an important consideration in the simulation of this process. In particular, the soluble mass fraction and aerosol insoluble mass type were demonstrated to influence simulation of the immersion freezing process, Data collected by the Arctic High Spectral Resolution Lidar and Millimeter Cloud Radar during the M-PACE period was analyzed in order to provide a statistical dataset for validation of simulations of mixed-phase stratus. 270 hours of single-layer cases were reviewed, and mean values for cloud base height, cloud thickness, cloud optical thickness, cloud temperature, wind direction, and liquid and ice particle size, particle number density, and water content were derived.

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