The Influence of Rainfall Characteristics, Hydrologic Characteristics and Rainfall Measurement Strategy on the Accuracy of Flash Flood Forecasts

降雨特征、水文特征及测雨策略对山洪预报精度的影响

• 批准号: 9307411
• 负责人: Soroosh Sorooshian
• 金额: $ 26.9万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-04-01 至 2000-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9307411&HistoricalAwards=false
• 关键词: Influence; Rainfall; Characteristics; Hydrologic; Measurement

9307411 Sorooshian Advances in radar spatial resolution and rain gage technology have been found inadequate for flash flood forecasting raising questions about the reliability of existing warning systems. This project will addressed the hydrometeorological issues relevant to the flash flood phenomena, particularly as it pertains to the relationship between rainfall and water shed characteristics, and the resulting flooding. The work will develop a quantitative understanding of rainfall characteristics pertinent to rainfall-runoff forecasting; will evaluate the space- time resolution of rainfall sensors, both radar and gage, on rainfall-runoff simulations; will improve understanding of how hydrologic characteristics that can cause flooding; and will increase the knowledge on how the requirements for minimum spatial resolution of rainfall data varies regionally, and with storm and watershed characteristics. The advances in knowledge will benefit flash flood mitigating efforts which every year causes substantive life and economic losses. ***

9307411 Sorooshian雷达空间分辨率和雨量计技术的进步已被发现不足以用于山洪预报，这对现有预警系统的可靠性提出了质疑。 该项目将探讨与山洪现象有关的水文气象问题，特别是降雨和流域特征之间的关系以及由此产生的洪水。 这项工作将从数量上了解与洪水径流预报有关的降雨特征;将评价降雨传感器（包括雷达和测量仪）在洪水径流模拟方面的时空分辨率;将增进对可能造成洪水的水文特征的了解;并将增加关于降雨量数据最低空间分辨率要求如何随区域以及风暴和流域特征而变化的知识。 知识的进步将有利于减轻山洪暴发的努力，每年都会造成重大的生命和经济损失。 ***