Mesoscale Influences on the Initiation and Development of Clouds and Precipitation

中尺度对云和降水的产生和发展的影响

• 批准号: 9123360
• 负责人: Mark Hjelmfelt
• 金额: --
• 依托单位: South Dakota School of Mines and Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-01 至 1996-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9123360&HistoricalAwards=false
• 关键词: Mesoscale; Influences; Initiation; Development; Clouds

Understanding the reasons for the location and timing of the onset of convective weather is a fundamental research question and important to the forecasting of weather. Convergence along mesoscale atmospheric boundaries and topographic effects are primary mechanisms for convective cloud initiation and development and in determining the distribution of precipitation. The availability of data from recent field research experiments and advances in numerical computer model capabilities provide an opportunity to advance knowledge of these processes. The Principal Investigator will use data collected from recent field programs to initialize and verify an advanced atmospheric numerical model. He will examine the contributions, interactions and sensitivities of the physical processes leading to convective storm development along atmospheric boundaries. He also will examine the influence of topography on the development and organization of clouds and precipitation.

了解对流天气发生的位置和时间的原因是一个基本的研究问题，对天气预报也很重要。 沿中尺度大气边界的辐合和地形效应是对流云产生和发展以及确定降水分布的主要机制。 最近的现场研究实验数据的可用性和数值计算机模型能力的进步为增进对这些过程的了解提供了机会。 首席研究员将使用从最近的实地项目收集的数据来初始化和验证先进的大气数值模型。 他将研究导致沿大气边界对流风暴发展的物理过程的贡献、相互作用和敏感性。 他还将研究地形对云和降水的发展和组织的影响。