Hydrologic response to climate change in the Densu River Basin in Ghana
Hydrologic response to climate change in the Densu River Basin in Ghana
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DOI：
10.1016/j.heliyon.2020.e04722
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发表时间：
2020-08-01
期刊：
影响因子：
4
通讯作者：
Ofosu, Eric
中科院分区：
文献类型：
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作者：
Oti, Jonathan Opoku;Kabo-bah, Amos T.;Ofosu, Eric
气候变化继续对水资源的可持续性构成威胁。全球变暖可能对丹苏河流域的水资源和水需求产生若干影响，特别是家庭用水和农业用水等。然而，丹苏河流域的水文未来将发生多大程度的变化仍是个未知数。本研究利用水资源评估与规划(WEAP21)系统，研究未来气候变化对丹苏河流域水资源的影响。2051-2080年期间的未来气候数据(降雨量和温度)来自瑞典气象和水文研究所在CORDEX实验下为RCP4.5情景建立的气候模型(ICHEC-EC-Earth和RCA4)。研究结果表明，丹苏河流域气温将上升8.23%，降雨量将减少17%，水资源将减少58.3%。气候变化影响分析表明，由于降雨量减少，河流流量减少。建议今后开展丹苏河流域水资源管理的气候变化适应研究。
Climate change continues to pose a threat to the sustainability of water resources. Global warming can have several effects on the water resources and water demands in the Densu River Basin especially household water use and agriculture use among several others. However, the extents to which the hydrology of the Densu River Basin is will be altered in the future remains unknown. In this research, the Water Evaluation and Planning (WEAP21) system was used to study the impacts of future climate change on water resources in the Densu River Basin. Future climate data (rainfall and temperature) for the period 2051-2080 was generated from the Swedish Meteorological and Hydrological Institute's climate models (ICHEC-EC-EARTH and RCA4) for RCP4.5 scenario under CORDEX experiment. The results of the study indicate that the Densu River Basin will experience a temperature increase by 8.23% and a 17% reduction in rainfall resulting in 58.3% reduction in water resources in the area. The climate change impact analysis indicates a reduction in the river streamflow due to decrease in rainfall. It is recommended that future research on climate change adaptation for water management in the Densu River Basin should be conducted.