Analysis of Hydro-Climatical Variability in the Mo Basin in Togo
Analysis of Hydro-Climatical Variability in the Mo Basin in Togo作者机构：Department of Geography Faculty of Human and Social Sciences Université de Lomé Lomé Togo
出 版 物：《Journal of Water Resource and Protection》 (水资源与保护（英文）)
年 卷 期：2021年第13卷第12期
页 面：1043-1060页
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
主 题：Climate Variability Hydro-Climatic Balance Mo Basin Togo
摘 要：Climate changes are affecting water resources around the world and the Mo Basin (MB) in Togo is no exception to this observation. This study aims at analyzing the influence of hydro-climatical data in the Mo Basin. To achieve this, Pettit’s stationarity break tests, Hubert’s segmentation, Nicholson’s [1] reduced centered index, Lamb [2] and flow coefficients have been applied. In addition, temperature, precipitation, evapotranspiration, relative humidity and discharge data from 1961 to 2018 have been used for this purpose. While rainfall is decreasing despite an increase of 22.8% at the Fazao station and 2.8% at Sotouboua station, the flow coefficients evolve synchronously with the precipitation data and show a strong link between both parameters. The climatic balance sheet is positive six months in the year (May to October), throughout the period of observation (1961-2018). Only 1962 and 1963 recorded an annual rainfall greater than the annual evapotranspiration. The other years undergo a climatic drought, increasingly pronounced, which strongly impacts the hydrology of rivers. This has a strong impact on water resources and food security and resources of the Fazao-Malfakassa reserve in the region.
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