Multi-model ensemble benchmark data for hydrological modeling in Japanese river basins

IF 0.6 Q4 WATER RESOURCES Hydrological Research Letters Pub Date : 2022-01-01 DOI:10.3178/hrl.16.73
Y. Sawada, S. Okugawa, Takayuki Kimizuka
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Abstract

: Verification processes of rainfall-runoff modeling are important to improve the skill of hydrological models to reproduce water cycles in river basins. It is ideal that newly developed models are compared with many benchmarking conventional models in many river basins as part of the ver‐ ification process. However, this robust verification is time-consuming if model developers prepare data and models from scratch. Here we present a useful dataset which can accelerate the robust verification of hydrological models. Our newly developed dataset, Multi-model Ensemble for Robust Verification of hydrological modeling in Japan (MERV-Jp), provides runoff simulation by 44 calibrated conceptual hydrological models in 135 Japanese river basins as well as meteorological forcing which is necessary to drive conceptual hydrological models. By comparing simulated runoff with river discharge observations which are not used for the calibration of hydrological models, we find that the best models in the 44 models can reproduce observed river runoff with KGE larger than 0.6 in most of the 135 river basins, so that the runoff simulation of MERV-Jp is reasonably accurate. MERV-Jp is publicly available to support all hydrological model developers to robustly verify their model improvement.
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日本河流流域水文模拟的多模型集合基准数据
降雨径流模型的验证过程对于提高水文模型重现流域水循环的能力具有重要意义。理想的情况是,将新开发的模型与许多河流流域的许多基准常规模型进行比较,作为验证过程的一部分。然而,如果模型开发人员从头开始准备数据和模型,那么这种健壮的验证是非常耗时的。在这里,我们提出了一个有用的数据集,可以加速对水文模型的鲁棒验证。我们新开发的数据集“日本水文模型鲁棒验证的多模型集成”(MERV-Jp)提供了135个日本河流流域44个校准的概念水文模型的径流模拟,以及驱动概念水文模型所必需的气象强迫。通过对比模拟径流与未用于水文模型定标的河流流量观测数据,我们发现,在135个流域中,44个模型中最优的模型能够再现KGE大于0.6的实测河流径流,表明MERV-Jp径流模拟具有较好的准确性。MERV-Jp是公开可用的,可以支持所有水文模型开发人员可靠地验证他们的模型改进。
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来源期刊
CiteScore
1.90
自引率
18.20%
发文量
9
审稿时长
10 weeks
期刊介绍: Hydrological Research Letters (HRL) is an international and trans-disciplinary electronic online journal published jointly by Japan Society of Hydrology and Water Resources (JSHWR), Japanese Association of Groundwater Hydrology (JAGH), Japanese Association of Hydrological Sciences (JAHS), and Japanese Society of Physical Hydrology (JSPH), aiming at rapid exchange and outgoing of information in these fields. The purpose is to disseminate original research findings and develop debates on a wide range of investigations on hydrology and water resources to researchers, students and the public. It also publishes reviews of various fields on hydrology and water resources and other information of interest to scientists to encourage communication and utilization of the published results. The editors welcome contributions from authors throughout the world. The decision on acceptance of a submitted manuscript is made by the journal editors on the basis of suitability of subject matter to the scope of the journal, originality of the contribution, potential impacts on societies and scientific merit. Manuscripts submitted to HRL may cover all aspects of hydrology and water resources, including research on physical and biological sciences, engineering, and social and political sciences from the aspects of hydrology and water resources.
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