Finding Principles of Large Scale Hydrologic Response: Linking Hydroclimatology and River Basin Dynamics

寻找大规模水文响应的原理：将水文气候学与流域动力学联系起来

• 批准号: 9706121
• 负责人: Praveen Kumar
• 金额: $ 15.75万
• 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: 1997
• 资助国家: 美国
• 起止时间: 1997-09-01 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9706121&HistoricalAwards=false
• 关键词: Finding; Principles; Large; Scale; Hydrologic

Kumar The objective of the proposed research is to develop principles of large scale hydrologic response in different hydroclimatological regimes by coupling hydroclimatology and river basin dynamics. This objective will be accomplished via three tasks: Through joint analysis of the atmospheric-hydrologic cycle and streamflow develop parameterizations to link hydroclimatology and basin response characteristics. In this task we will: (I) Classify the entire US into homogeneous hydroclimatic regimes using a combination of atmospheric dynamics, and analysis of atmospheric moisture, wind velocity and temperature fields, and stramflow observations. This also involves identifying parameters that describe the similarities and differences between these regimes. (ii) Develop relationships between parameters characterizing the climatology and the basin response in each homogeneous regime. Develop a non-dimensional formulation of large-scale basin response which explicitly incorporates the hydrolimatological influence and self-similarity of the three dimensional river networks. In this task we will (I) Incorporate hydroclimatological influence and the self-similarity of three dimensional river networks into the notion of hydrologic similarity and develop formulation of basin response in non-dimensional framework. (ii) Identify the important parameters that control the similarities and differences in responses of two basins within and across hydroclimatogically homogeneous regimes, respectively, and examine the scales of their applicability Using high resolution digital elevation and streamflow data, perform validation studies in different hydrolimatic regimes.In this task we will: (i) Compare the basin response generated from the above formulations with the observed streamflows in the different regimes . (ii) Study the scales of applicability of the non-dimensional formulations by using basins of various sizes (iii) Analyze the effectiveness of the identified parameters that characterize the similarities between responses within homogeneous regimes and differences across them. Model development and testing will be limited to basins in two to three homogeneous regimes for the duration of the proposal.

库马尔（Kumar）拟议的研究的目的是通过耦合氢化气候学和河流盆地动力学来制定不同氢化气候系统中的大规模水文反应原理。 该目标将通过三个任务来完成：通过对大气流态周期和流量的联合分析，开发了参数化，以链接氢化气候学和盆地反应特征。 在此任务中，我们将：（i）使用大气动力学的结合以及大气湿度，风速和温度场以及Stramflow观测来将整个美国分类为均质的氢化气候状态。 这还涉及确定描述这些制度之间相似性和差异的参数。 （ii）在每个同质制度中表征气候学和盆地反应的参数之间发展关系。 开发出大规模盆地反应的非量纲表述，该表明明确结合了三维河网络的水文学影响和自相似性。 在这项任务中，我们将（i）将三维河网络的水文学影响和自相似性纳入水文相似性的概念中，并在非二维框架中发展盆地反应的表述。 （ii）确定控制两个盆地内外两个盆地响应的相似性和差异的重要参数，分别是氢化性均匀的均质制度，并使用高分辨率数字高度数据和水流流量数据检查其适用性的量表，在不同的水解方案中进行验证研究在此任务中，我们将：（i）将上述公式产生的盆地响应与不同制度中观察到的流汇。 （ii）研究通过使用各种大小（iii）的盆地分析已确定参数的有效性，这些量表表征了均匀制度内的响应之间的相似性及其差异之间的相似性。 在提案期间，模型开发和测试将仅限于两到三个均匀制度的盆地。