دورية أكاديمية
Multi-model approach in a variable spatial framework for streamflow simulation
| العنوان: | Multi-model approach in a variable spatial framework for streamflow simulation |
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| المؤلفون: | C. Thébault, C. Perrin, V. Andréassian, G. Thirel, S. Legrand, O. Delaigue |
| المصدر: | Hydrology and Earth System Sciences, Vol 28, Pp 1539-1566 (2024) |
| بيانات النشر: | Copernicus Publications, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Technology LCC:Environmental technology. Sanitary engineering LCC:Geography. Anthropology. Recreation LCC:Environmental sciences |
| مصطلحات موضوعية: | Technology, Environmental technology. Sanitary engineering, TD1-1066, Geography. Anthropology. Recreation, Environmental sciences, GE1-350 |
| الوصف: | Accounting for the variability of hydrological processes and climate conditions between catchments and within catchments remains a challenge in rainfall–runoff modelling. Among the many approaches developed over the past decades, multi-model approaches provide a way to consider the uncertainty linked to the choice of model structure and its parameter estimates. Semi-distributed approaches make it possible to account explicitly for spatial variability while maintaining a limited level of complexity. However, these two approaches have rarely been used together. Such a combination would allow us to take advantage of both methods. The aim of this work is to answer the following question: what is the possible contribution of a multi-model approach within a variable spatial framework compared to lumped single models for streamflow simulation? To this end, a set of 121 catchments with limited anthropogenic influence in France was assembled, with precipitation, potential evapotranspiration, and streamflow data at the hourly time step over the period 1998–2018. The semi-distribution set-up was kept simple by considering a single downstream catchment defined by an outlet and one or more upstream sub-catchments. The multi-model approach was implemented with 13 rainfall–runoff model structures, three objective functions, and two spatial frameworks, for a total of 78 distinct modelling options. A simple averaging method was used to combine the various simulated streamflow at the outlet of the catchments and sub-catchments. The lumped model with the highest efficiency score over the whole catchment set was taken as the benchmark for model evaluation. Overall, the semi-distributed multi-model approach yields better performance than the different lumped models considered individually. The gain is mainly brought about by the multi-model set-up, with the spatial framework providing a benefit on a more occasional basis. These results, based on a large catchment set, evince the benefits of using a multi-model approach in a variable spatial framework to simulate streamflow. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1027-5606 1607-7938 |
| Relation: | https://hess.copernicus.org/articles/28/1539/2024/hess-28-1539-2024.pdf; https://doaj.org/toc/1027-5606; https://doaj.org/toc/1607-7938 |
| DOI: | 10.5194/hess-28-1539-2024 |
| URL الوصول: | https://doaj.org/article/e18e31b8eaa3420fae430b71717489de |
| رقم الأكسشن: | edsdoj.18e31b8eaa3420fae430b71717489de |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 10275606 16077938 |
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| DOI: | 10.5194/hess-28-1539-2024 |