Remote sensing in hydrology: A systematic review of its applications in the Upper Blue Nile Basin, Ethiopia

HydroResearch Pub Date : 2024-09-07 DOI:10.1016/j.hydres.2024.09.002

Yilkal Gebeyehu Mekonnen , Tena Alamirew , Abebe Demissie Chukalla , Demelash Ademe Malede , Sileshi Getahun Yalew , Aramde Fetene Mengistu

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引用次数: 0

Abstract

The Upper Blue Nile basin is important for sustaining millions of livelihoods in Ethiopia and downstream nations. However, there are very few hydroclimate observatories in the basin. Remote sensing is an alternative for providing synoptic, repetitive, and timely information. This review investigated how remote sensing data is applied in studying the basin's hydrology. The main application areas include satellite rainfall products evaluation, land use land cover change mapping, evapotranspiration modeling, groundwater recharge estimation, and soil moisture and water storage monitoring. CHIRPS is reported to be the best-performing satellite-based precipitation product. Natural forest, grassland, and shrubland coverage is decreasing, whereas agriculture and urban are increasing. Remote Sensing is used to extract hydrogeological features, identify recharge zones, assess soil moisture, and manage reservoirs. Overall, this review offers insights into how remote sensing can be applied in hydrology, benefiting policymakers, researchers, and practitioners by harnessing the full potential of remote sensing technology.

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遥感技术在水文学中的应用：埃塞俄比亚青尼罗河上游流域遥感应用系统回顾

青尼罗河上游流域对于维持埃塞俄比亚和下游国家数百万人的生计非常重要。然而，该流域的水文气候观测站非常少。遥感是提供综合、重复和及时信息的替代方法。本综述调查了遥感数据在研究该流域水文方面的应用情况。主要应用领域包括卫星降雨产品评估、土地利用土地覆盖变化绘图、蒸散模型、地下水补给估算以及土壤水分和蓄水监测。据报道，CHIRPS 是性能最好的卫星降水产品。天然林、草地和灌木地的覆盖率正在下降，而农业和城市的覆盖率正在上升。遥感技术被用于提取水文地质特征、确定补给区、评估土壤湿度和管理水库。总之，本综述就如何将遥感技术应用于水文领域提出了见解，通过充分利用遥感技术的潜力，使决策者、研究人员和从业人员受益匪浅。

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来源期刊

HydroResearch

CiteScore

9.20

自引率

0.00%

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