Field and Modeling Studies of Warm Cloud Precipitation Physics

暖云降水物理的现场和模拟研究

• 批准号: 9634660
• 负责人: Robert Rauber
• 金额: $ 61.32万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-01 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9634660&HistoricalAwards=false
• 关键词: Field; Modeling; Studies; Warm; Cloud

Rauber/Abstract ATM-9634660 The goal of this proposal is to develop a physically consistent understanding of the evolution of rain in warm tropical clouds. Our proposed research involves: 1) the evaluation of hypotheses concerning the initiation of coalescence; 2) the assessment of the importance of environmental influences, such as vertical shear and entrainment, on the evolution of rain following the development of the first precipitation embryos; 3) the determination of the mechanism governing the formation of very large raindrops in shallow warm cumulous; 4) the characterization of cloud microphysical processes in terms of the equivalent radar reflectivity factor; and 5) the determination of the dynamical mechanisms responsible for the formation and rapid intensification of Hawaiian rainbands. Our studies include the analysis of data from three field projects, the joint Hawaiian Warm rainbands. Our studies include the analysis of data from three field projects, the Joint Hawaiian Warm Rain Project, the Hawaiian Rainband Project, and the small Cumulus Microphysics Experiment. The proposed research also includes modeling studies using the Clark model, and Lagrangian trajectory models applied within kinematic fields from both the Clark model and Doppler radar data.

本提案的目标是对热带暖云中雨的演变形成物理上一致的理解。我们拟开展的研究包括：1)对聚结起始的假设进行评估；(2)首次降水胚胎发育后，垂直切变和夹带等环境影响对降水演变的重要性评价；3)浅层暖积云超大雨滴形成机理的确定；4)利用等效雷达反射率因子表征云微物理过程；5)确定夏威夷雨带形成和快速增强的动力机制。我们的研究包括三个实地项目的数据分析，联合夏威夷暖雨带。我们的研究包括三个实地项目的数据分析，夏威夷联合暖雨项目、夏威夷雨带项目和小型积云微物理实验。拟议的研究还包括使用Clark模型进行建模研究，以及在Clark模型和多普勒雷达数据的运动场中应用拉格朗日轨迹模型。