Investigations of the Mesoscale Structure of Continental Winter Cyclonic Storms

大陆冬季气旋风暴的中尺度结构研究

• 批准号: 9020753
• 负责人: Robert Rauber
• 金额: $ 44.98万
• 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: 1991
• 资助国家: 美国
• 起止时间: 1991-03-01 至 1994-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9020753&HistoricalAwards=false
• 关键词: Investigations; Mesoscale; Structure; Continental; Winter

Due to the potential for disruption of human and economic activities, precipitation characteristics of winter-time cyclones are of great practical as well as scientific interest. It has been known for some time that the heaviest precipitation from these systems occurs in relatively narrow precipitation bands. Over the past several years, the organization of precipitation bands in cyclonic storms has received a great deal of attention with a variety of physical mechanisms being proposed to explain the characteristics of these bands. Most of the previous observational studies of bandedness in winter cyclonic storms have been conducted in coastal regions which experience quite different meteorological conditions than the mid-continental area. Previously, the Principal Investigators were involved in field experiments to collect data on these winter-time banded structures. The field projects included advanced instrumentation such as Doppler radar and wind profiling system. The Principal Investigators will continue their analysis of this observational data and expand their research to contain a numerical modelling component. Primary objectives will be to describe the physical characteristics and mesoscale organization of precipitation bands and to isolate the dynamic mechanisms responsible for the formation and evolution of the bands.

由于可能破坏人类和经济 活动，冬季降水特征 旋风具有巨大的实用性和科学意义。 据了解，一段时间以来， 从这些系统发生在相对狭窄的降水 乐队. 在过去几年中， 气旋风暴中的降水带已经收到了大量的 注意力的各种物理机制， 提出来解释这些波段的特征。 大部分 以往冬季带状现象的观测研究 气旋风暴已经在沿海地区进行， 经历了完全不同的气象条件， 大陆中部地区。 此前，主要研究人员参与了 实地实验，收集这些冬季时间带的数据， 结构. 实地项目包括先进的 多普勒雷达和风廓线系统等仪器。 主要研究人员将继续对此进行分析。 观察数据，并扩大他们的研究，以包含一个 数字建模组件。 主要目标将是 描述物理特征和中尺度组织 并分离动力机制 负责乐队的形成和进化。