Rainfall runoff modelling of the Upper Ganga and Brahmaputra basins using PERSiST.

Rainfall runoff modelling of the Upper Ganga and Brahmaputra basins using PERSiST.
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使用 PERSiST 对恒河上游和雅鲁藏布江盆地的降雨径流进行建模。

DOI:
10.1039/c4em00613e
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发表时间:
2015
期刊:
Environmental science. Processes & impacts
影响因子:
--
通讯作者:
Futter MN
Futter MN
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作者:
Futter MN

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关于降雨径流模型的适当复杂程度和不确定性来源的讨论正在进行中。业务水文学、洪水预报或养分输送的模拟都保证了建模方法的不同程度的复杂性。更复杂的模型结构适用于模拟依赖于土地覆盖的养分输送,而更简洁的模型结构可能足以模拟径流。适当的复杂程度还取决于数据的可用性。在这里,我们使用PERSiST;一个简单的半分布式动态降雨径流建模工具包,用于模拟恒河上游和雅鲁藏布江的流量。我们分别使用基于均匀和水化学相关土地覆盖的简单(A)和复杂(B)模型结构,提出了由每日降水量和温度的单一时间序列驱动的两组模拟。基于贝叶斯信息准则 (BIC) 统计数据的集合对模型进行比较。观察到参数的等价性,但模型结构的等价性却没有。对于更复杂的 (B) 结构表示,模型性能优于简约模型结构。结果表明结构不确定性比参数不确定性更重要。 BIC 统计数据的集合表明,从统计意义上讲,这两种结构表示都不是优选的。这里提出的模拟证实,数据要求有限的相对简单的模型可用于可靠地模拟大型、数据匮乏的流域中养分通量建模所需的流量和水平衡组成部分。
There are ongoing discussions about the appropriate level of complexity and sources of uncertainty in rainfall runoff models. Simulations for operational hydrology, flood forecasting or nutrient transport all warrant different levels of complexity in the modelling approach. More complex model structures are appropriate for simulations of land-cover dependent nutrient transport while more parsimonious model structures may be adequate for runoff simulation. The appropriate level of complexity is also dependent on data availability. Here, we use PERSiST; a simple, semi-distributed dynamic rainfall-runoff modelling toolkit to simulate flows in the Upper Ganges and Brahmaputra rivers. We present two sets of simulations driven by single time series of daily precipitation and temperature using simple (A) and complex (B) model structures based on uniform and hydrochemically relevant land covers respectively. Models were compared based on ensembles of Bayesian Information Criterion (BIC) statistics. Equifinality was observed for parameters but not for model structures. Model performance was better for the more complex (B) structural representations than for parsimonious model structures. The results show that structural uncertainty is more important than parameter uncertainty. The ensembles of BIC statistics suggested that neither structural representation was preferable in a statistical sense. Simulations presented here confirm that relatively simple models with limited data requirements can be used to credibly simulate flows and water balance components needed for nutrient flux modelling in large, data-poor basins.
评估气候变化和社会经济变化对恒河系统流量和磷通量的影响。
DOI: 10.1039/c5em00092k
发表时间: 2015
期刊: Environmental science. Processes & impacts
影响因子: --
作者:
Jin L
通讯作者: Jin L
DOI: 10.1109/tac.1974.1100705
发表时间: 1974-01-01
影响因子: 6.8
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AKAIKE, H
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发表时间: 2012
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M. Futter;J. Klaminder;R. W. Lucas;H. Laudon;S. Köhler
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DOI: 10.1039/c4em00619d
发表时间: 2015-06
期刊: Environmental science. Processes & impacts
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作者:
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回复[A. J. Jakeman 和 G. M. Hornberger 对“降雨径流模型需要多少复杂性?”的评论]
DOI: --
发表时间: 1994
期刊:
影响因子: --
作者:
A. Jakeman;G. Hornberger
通讯作者: G. Hornberger