Transformation of spatio-temporal rainfall fields into spatio-temporal runoff with a focus on extreme events
以极端事件为重点的时空降雨场转化为时空径流
基本信息
- 批准号:392331790
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Fellowships
- 财政年份:2018
- 资助国家:德国
- 起止时间:2017-12-31 至 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The transformation of rainfall into runoff is an important process of the hydrological cycle. With the commonly used linear model assumptions it is not possible to represent the highly non-linear transformation in space and time. Hence, the knowledge about the influencing factors of this transformation is essential for an adequate representation. The aim of the present project is to investigate the aforementioned transformation in dependence on physiographic and climatic factors. Rainfall-runoff simulations will be carried out for a variety of catchments in Austria using a hydrological model with different spatial resolutions. Spatial gradients of rainfall and runoff will be investigated comparatively as well as rainfall and runoff rates as function of the catchment scale. Spatial runoff patterns will be compared with those of physiographic and climatic factors to analyze their impact on the spatial-temporal transformation process. Due to the high variability of the investigated catchments ranging from lowlands to mountainous regions general conclusions can be drawn. The innovation of this project is the symmetric investigation of rainfall and runoff regarding their spatial and temporal variability, with a focus on extreme events and water budget. The project results are important for the prediction of future runoff under data shortage and changing climatic conditions.
降雨向径流的转化是水循环的一个重要过程。在常用的线性模型假设下,不可能表示空间和时间上的高度非线性变换。因此,了解这种转变的影响因素对于充分的表述是必不可少的。本项目的目的是调查上述依赖于地理和气候因素的转变。降雨径流模拟将采用不同空间分辨率的水文模型对奥地利的各种集水区进行。降雨和径流的空间梯度以及降雨和径流率作为流域尺度的函数将被比较研究。将空间径流格局与地理和气候因素进行比较,分析其对时空转换过程的影响。由于调查的流域从低地到山区的高度变异性,可以得出一般性结论。该项目的创新之处在于对降雨和径流的时空变化进行对称调查,重点关注极端事件和水收支。该项目的研究结果对于在数据短缺和气候条件变化的情况下预测未来径流具有重要意义。
项目成果
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Dr.-Ing. Hannes Müller-Thomy其他文献
Dr.-Ing. Hannes Müller-Thomy的其他文献
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