Cloud and Dynamical Processes of Precipitating Warm Cumuli During Rain In Cumulus over the Ocean (RICO)

海洋上空积云降雨​​期间暖积云降水的云和动力学过程 (RICO)

• 批准号: 0342597
• 负责人: Bart Geerts
• 金额: $ 47.67万
• 依托单位: University of Wyoming
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-04-15 至 2009-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0342597&HistoricalAwards=false
• 关键词: Cloud; Dynamical; Processes; Precipitating; Warm

The "Rain in Cumulus over the Ocean" (RICO) experiment will be a multi-investigator international study of the nature of trade wind Cumulus clouds and of warm-rain formation in such clouds. Within the context of that broader experiment, investigators Geerts and Vali of the University of Wyoming will use the Wyoming King Air and its W-band cloud radar to determine how the air motions in cumulus clouds are associated with the development of precipitation and how trade-wind Cumulus propagate and generate clusters. The first study, which builds upon similar studies of stratocumulus clouds by the same radar, emphasizes the connection between kinematic evolution of the cumulus cells and the development of precipitation. The second features tests of two competing hypotheses regarding cell propagation, one based on dynamic forcing as for a gust front at the edge of the downdraft-driven cold pool, and the second based on enhancement of surface fluxes as a result of downdraft-driven gusts. Many other investigators in RICO will also benefit from the data to be collected by the Wyoming King Air and the Wyoming Cloud Radar. In the course of this work, graduate students will be educated in airborne research methods and the use of the airborne radar, which is becoming an important tool for studies of the fine-scale air motions in clouds. The investigators will also participate in the conduct of a RICO Graduate Student Seminar for the benefit of all graduate students in the project. A further broader impact of the research will be the potential use of the measurements from the cloud radar in the planning for the NASA "CloudSat" radar, a radar that will have properties similar to the Wyoming Cloud Radar.

“海洋积积雨”（RICO）实验将是一项对贸易云积云云和这种云中温暖的洪水形成的性质的多次评估研究。在更广泛的实验的背景下，怀俄明大学的研究人员吉特和瓦利将使用怀俄明州的国王空气及其W波段云雷达来确定Cumulus Cloud中的空气运动与降水的发展以及贸易风能如何宣传和繁殖簇相关。第一项研究基于相同的雷达对层云的类似研究，强调了云元细胞的运动学演化与降水的发展之间的联系。第二个具有两个关于细胞传播的竞争假设的测试，一个基于动态强迫，与下降驱动的冷水池边缘的阵风前锋，第二个基于下降驱动的阵风的增强表面通量的增强。怀俄明州国王空气和怀俄明州的云雷达收集的数据也将受益于RICO的许多其他研究人员。在这项工作的过程中，研究生将接受空中研究方法和使用空中雷达的教育，这正在成为研究云中精细规模空气运动的重要工具。调查人员还将参加RICO研究生研讨会的活动，以使项目中所有研究生的利益。这项研究的进一步更广泛的影响将是在NASA“ Cloudsat”雷达计划中的测量值的潜在使用，该雷达具有类似于Wyoming Cloud Radar的性能。