Further Studies of Convective Initiation, Structure and Maintenance

对流起始、结构和维持的进一步研究

• 批准号: 0554765
• 负责人: Robert Fovell
• 金额: $ 47.99万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0554765&HistoricalAwards=false
• 关键词: Further; Studies; Convective; Initiation; Structure

The Principal Investigator will continue research into the initiation, structure and behavior of atmospheric convection, with the objective of enhancing understanding of storm initiation and maintenance and improving the ability to simulate and forecast these convective systems. The project consists of complementary investigations of such phenomena as squall lines, convective rolls and sea-breeze circulations, made utilizing a hierarchy of models ranging from the highly idealized to regional-scale mesoscale models with complex initializations and realistic topography. Specifically, the Principal Investigator will study how existing storms influence their surrounding environments, leading to their maintenance and/or the excitation of new convection, and how convection should be initiated in models, for the purposes of testing and tuning microphysical schemes. The primary research tool is numerical simulation, but with a significant and increasing emphasis on calibrating and validating the model results with data from the field, including radar and satellite information, and surface and upper air observations. The fundamental objective of this research is to extend knowledge of convective storms, with special emphasis on the convective initiation (CI) process. The intellectual merit of the research resides in an enhanced understanding of how storms develop and are maintained. The project's broader impacts include the positive influence this research could have on the ability of forecasters to understand and anticipate storm development and also in improving the skill of operational models in capturing CI in a realistic manner.

首席研究人员将继续研究大气对流的启动，结构和行为，目的是增强对风暴启动和维护的理解，并提高模拟和预测这些对流系统的能力。 该项目包括对诸如挤压线，对流卷和海上冻结循环等现象的互补研究，使使用模型的层次结构，从高度理想化到具有复杂初始化和逼真的地形的高度理想化到区域尺度的中尺度模型。 具体而言，主要研究者将研究现有风暴如何影响其周围环境，从而导致其维护和/或激发新对流的环境，以及在模型中应如何启动对流，以进行测试和调整微物理方案。 主要的研究工具是数值模拟，但重点且越来越重视通过现场的数据（包括雷达和卫星信息）以及表面和上空观测来校准和验证模型结果。这项研究的基本目标是扩展对流风暴的知识，并特别强调对流启动（CI）过程。 这项研究的智力优点在于对风暴如何发展和维持的增强理解。 该项目的更广泛的影响包括这项研究对预测者理解和预测风暴发展的能力的积极影响，以及以现实方式捕获CI的操作模型的技巧。