Presidential Young Investigators Award - Soil Moisture Dynamics and Droughts

总统青年研究员奖 - 土壤水分动态和干旱

• 批准号: 9158150
• 负责人: Dara Entekhabi
• 金额: $ 0.8万
• 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: 1991
• 资助国家: 美国
• 起止时间: 1991-07-15 至 1991-09-01
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9158150&HistoricalAwards=false
• 关键词: Presidential; Young; Investigators; Award; Soil

This project is supported through the Presidential Young Investigators Award program. The studies conducted during the next five years will concentrate on the development and analysis of the occurrence and duration of droughts using stochastic differential equations to model continental water and heat balance. The statistical distribution of drought durations for several climatic case examples will be developed. The persistent and long-range dependence characteristics for this model will be derived and related to climatic forcing factors. Through the model for hydroclimatology of continental- type climates, the importance of hydrologic land surface-atmosphere interactions in the dynamics of drought will be illustrated. The benefits of this research will be to better understand the stochastic perturbations and year-to-year random variations in large scale atmospheric flow features which occasionally trigger drought conditions that persist and impact human society and the natural environment. With a better understanding mitigation of drought consequences could be achieved.

该项目通过总统年轻调查员奖计划支持。 在接下来的五年中进行的研究将集中于使用随机微分方程对干旱的发生和分析，以模拟大陆水和热平衡。 将开发几个气候案例示例的干旱持续时间的统计分布。 该模型的持续和远程依赖性特征将被得出，并与气候强迫因子有关。 通过大陆类型气候的水合气候模型，将说明水文土地表面 - 大圈相互作用在干旱动力学中的重要性。 这项研究的好处将是更好地了解大规模大气流量特征的随机扰动和年度随机变化，这些特征偶尔会触发干旱条件，这些条件持续并影响人类社会和自然环境。 有了更好的理解缓解干旱后果。