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)

基本信息

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

项目摘要

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.

“海洋积云雨”（RICO）实验将是一项由多名研究者组成的国际研究，旨在研究信风积云的性质以及此类云中暖雨的形成。在这项更广泛的实验中，怀俄明大学的研究人员吉尔茨和瓦利将使用怀俄明国王航空及其 W 波段云雷达来确定积云中的空气运动与降水的发展之间的关系，以及贸易如何影响积云。风积云传播并产生星团。第一项研究以同一雷达对层积云的类似研究为基础，强调积云的运动演化与降水发展之间的联系。第二个特征测试了关于细胞传播的两个相互竞争的假设，一个基于下沉气流驱动的冷池边缘的阵风锋的动态强迫，第二个基于下沉气流驱动的阵风导致的表面通量的增强。 RICO 的许多其他调查人员也将受益于怀俄明国王航空和怀俄明云雷达收集的数据。在这项工作的过程中，研究生将接受机载研究方法和机载雷达的使用教育，机载雷达正在成为研究云中精细尺度空气运动的重要工具。研究人员还将参加 RICO 研究生研讨会的举办，以造福于该项目的所有研究生。这项研究的更广泛影响将是云雷达测量结果在 NASA“CloudSat”雷达规划中的潜在用途，该雷达将具有与怀俄明州云雷达类似的特性。