雪分布模型对径流预测的影响

IF 2.7 4区 环境科学与生态学 Q2 Environmental Science Hydrology Research Pub Date : 2023-03-07 DOI:10.2166/nh.2023.043
I. Clemenzi, D. Gustafsson, Wolf-Dietrich Marchand, B. Norell, J. Zhang, R. Pettersson, V. Pohjola
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引用次数: 0

摘要

山区的雪对寒冷地区的水循环至关重要。在这样的环境中,雪过程的复杂性使得准确的雪和径流预测具有挑战性。已经开发了各种雪建模方法,特别是为了改进雪预测。在这项研究中,我们使用雪分布的不同参数表示,比较了改进瑞典北部Överuman流域径流预测的能力。它们包括基于温度的方法、基于风特征的降雪分布(SF)函数和雪耗曲线(DC)。此外,我们还评估了在水文模型校准中,除了径流之外,还使用分布式降雪观测的好处。我们发现,具有基于风特征的SF函数的模型比没有该函数的模型更好地预测了接近积累峰值的雪水当量(SWE)。对于径流预测,使用SF函数和DC的模型表现出良好的性能(Nash–Sutcliffe效率中值等于0.71)。尽管不同雪过程表示的校准标准存在差异,但模型校准中的雪观测为SWE和径流预测增加了值。
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Impact of snow distribution modelling for runoff predictions
Snow in the mountains is essential for the water cycle in cold regions. The complexity of the snow processes in such an environment makes it challenging for accurate snow and runoff predictions. Various snow modelling approaches have been developed, especially to improve snow predictions. In this study, we compared the ability to improve runoff predictions in the Överuman Catchment, Northern Sweden, using different parametric representations of snow distribution. They included a temperature-based method, a snowfall distribution (SF) function based on wind characteristics and a snow depletion curve (DC). Moreover, we assessed the benefit of using distributed snow observations in addition to runoff in the hydrological model calibration. We found that models with the SF function based on wind characteristics better predicted the snow water equivalent (SWE) close to the peak of accumulation than models without this function. For runoff predictions, models using the SF function and the DC showed good performances (median Nash–Sutcliffe efficiency equal to 0.71). Despite differences among the calibration criteria for the different snow process representations, snow observations in model calibration added values for SWE and runoff predictions.
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来源期刊
Hydrology Research
Hydrology Research Environmental Science-Water Science and Technology
CiteScore
5.30
自引率
7.40%
发文量
70
审稿时长
17 weeks
期刊介绍: Hydrology Research provides international coverage on all aspects of hydrology in its widest sense, and welcomes the submission of papers from across the subject. While emphasis is placed on studies of the hydrological cycle, the Journal also covers the physics and chemistry of water. Hydrology Research is intended to be a link between basic hydrological research and the practical application of scientific results within the broad field of water management.
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