Abstract Assessing suitability of the ACRU hydrological model in a rainforest catchment in Ghana, West Africa
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Assessing suitability of the ACRU hydrological model in a rainforest catchment in Ghana, West Africa

机译：在西非加纳的雨林流域评估ACRU水文模型的适用性

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AbstractHydrological modelling is a challenge in the rainforest dominated Bonsa catchment (1482km2) in Ghana, West Africa, because of data scarcity and rapidly changing land uses. The objective of this study was to assess the suitability of the daily time step physical-conceptual ACRU model for hydrological modelling in the Bonsa catchment. Since the catchment is data poor, model calibration was conducted using a careful parameterization and sensitivity analysis, using initial values obtained from literature and field observations, as well as climate data for the period 1987–1999 and 1991 land use. The model performance during calibration and validation was satisfactory, with a monthly NSE of 0.6 and 0.5 and R2of 0.8 and 0.7, respectively. The model simulated the rise and the recession of the hydrograph well, but during the validation the accumulated monthly streamflows were underestimated by 10%. The main conclusion from this study is that the ACRU hydrological model is suitable for exploring basic hydrological responses to land use and climate in the Bonsa and similar catchments.
机译： 摘要 在加纳以雨林为主的Bonsa流域（1482km 2 ）中，水文建模是一个挑战西部非洲，因为数据匮乏和土地使用快速变化。这项研究的目的是评估Bonsa流域每天时间步长的物理概念ACRU模型在水文建模中的适用性。由于该流域的数据贫乏，因此使用仔细的参数化和敏感性分析，使用从文献和现场观察获得的初始值以及1987-1999年和1991年土地使用的气候数据进行模型校准。校准和验证期间的模型性能令人满意，每月NSE分别为0.6和0.5，R 2 分别为0.8和0.7。该模型模拟了水文曲线图的上升和下降，但在验证过程中，每月累积流量被低估了10％。该研究的主要结论是，ACRU水文模型适用于探索邦萨及类似流域对土地利用和气候的基本水文响应。

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