Final technical Report DE-FG02-06ER65187

Edwin Eloranta

关键词: AEROSOLS;    BASES;    DATA;    DENSITY;    FREEZING;    HEIGHT;    LIQUIDS;    MASS;    OPTICAL RADAR;    ORDERS;    PARTICLE SIZE;    PARTICLES;    PRODUCTION;    RADAR;    RESOLUTION;    SIMULATION;    THICKNESS;    VALIDATION;    WIND;    WISCONSIN Cloud model validation;    High Spectral Resolution Lidar;    ice nucleation;   

DOI  :  10.2172/959345
RP-ID  :  DOEER64187-3 Final Report
PID  :  OSTI ID: 959345
Others  :  TRN: US1003925

美国|英语

来源: SciTech Connect

【 摘 要 】

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.