Climate Trends of Temperature, Precipitation and River Discharge in the Abbay River Basin in Ethiopia

作     者：Asaminew Abiyu Cherinet Denghua Yan Hao Wang Xinshan Song Tianlin Qin Mulualem T. Kassa Abel Girma Batsuren Dorjsuren Mohammed Gedefaw Hejia Wang Otgonbayar Yadamjav 

作者机构：College of Environmental Science and Engineering Donghua University Shanghai China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower Research (IWHR) Beijing China Department of Water Resources China Institute of Water Resources and Hydropower Research (IWHR) Beijing China Bio-Taq Economy Innovations (BioTEI) Inc. Winnipeg Canada Department of Natural Resource Management University of Gondar Gondar Ethiopia Department of Environment and Forest Engineering School of Engineering and Applied Sciences National University of Mongolia Ulaanbaatar Mongolia Department of Hydraulic Engineering Tsinghua University Beijing China Department of Sociology and Social Work School of Art & Sciences National University of Mongolia Ulaanbaatar Mongolia. 

出 版 物：《Journal of Water Resource and Protection》 (水资源与保护（英文）)

年 卷 期：2019年第11卷第10期

页      面：1292-1311页

学科分类：07[理学] 0707[理学-海洋科学] 

主　　题：Abbay River Basin Climate Change Ethiopia Precipitation River Discharge Temperature 

摘      要：Projecting future changes of streamflow in the Abby River Basin (ARB) is important for planning and proper management of the basin system. The current study conducted in five stations of the Abbay river basin, and investigated the annual temperature, precipitation, and river discharge variability using the Innovative trend analysis method, Mann-Kendall, and Sen’s slope test estimator. The result showed a slightly increasing trend of annual precipitation in Assoa (Z = 0.71), Bahir Dar (Z = 0.13), and Gonder (Z = 0.26) stations, while a significant increasing trend was observed in Nedgo (Z = 2.45) and Motta (Z = 1.06) stations. Interestingly, the trend of annual temperature in Assosa (Z = 5.88), Bahir Dar (Z = 3.87), Gonder (Z = 4.38), Nedgo (Z = 4.77), and Motta (Z = 2.85) was abruptly increased. The average mean temperature has increased by 0.2°C in the past 36 years (1980 to 2016). The extreme high temperature was observed in the semi-dry zone of northern Ethiopia. During the study period, a significant declining trend of the river discharge was recorded, and the river discharge was sharply decreased from 1992 onwards. The results of the current study showed annual variability of river discharge, precipitation, and temperature of the study area of the basin that could be used as a basis for future studies.