Hydrological Modelling of the Mono River Basin at Athiémé

Q3 Earth and Planetary Sciences Proceedings of the International Association of Hydrological Sciences Pub Date : 2021-11-16 DOI:10.5194/piahs-384-57-2021

E. I. Biao, E. Obada, E. Alamou, J. Zandagba, A. Chabi, E. Amoussou, J. Adounkpe, A. Afouda

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Abstract

Abstract. The objective of this study is to model the Mono River basin at Athiémé using stochastic approach for a better knowledge of the hydrological functioning of the basin. Data used in this study consist of observed precipitation and temperature data over the period 1961–2012 and future projection data from two regional climate models (HIRHAM5 and REMO) over the period 2016–2100. Simulation of the river discharge was made using ModHyPMA, GR4J, HBV, AWBM models and uncertainties analysis were performed by a stochastic approach. Results showed that the different rainfall-runoff models used reproduce well the observed hydrographs. However, the multi-modelling approach has improved the performance of the individual models. The Hermite orthogonal polynomials of order 4 are well suited for the prediction of flood flows in this basin. This stochastic modeling approach allowed us to deduce that extreme events would therefore increase in the middle of the century under RCP8.5 scenario and towards the end of the century under RCP4.5 scenario.

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athisamuest Mono河流域的水文模拟

摘要本研究的目的是利用随机方法对athisamuise的Mono河流域进行建模，以便更好地了解该流域的水文功能。本研究使用的数据包括1961-2012年期间的降水和温度观测数据，以及2016-2100年期间两个区域气候模式(HIRHAM5和REMO)的未来预测数据。采用modhypma、GR4J、HBV、AWBM模型对河流流量进行模拟，采用随机方法进行不确定性分析。结果表明，所采用的降雨径流模型能较好地再现实测水文曲线。然而，多模型方法提高了单个模型的性能。4阶埃尔米特正交多项式可以很好地预测该流域的洪水流量。这种随机建模方法使我们能够推断出，在RCP8.5情景下，极端事件将在本世纪中叶增加，在RCP4.5情景下，极端事件将在本世纪末增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the International Association of Hydrological Sciences Earth and Planetary Sciences-Earth and Planetary Sciences (all)

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12 weeks