Precipitation and Temperature Trends over the Lake Tana Basin, Ethiopia

Résumé

Analysis of precipitation and temperature extremes is important for water resource management, and ecosystem protection at various spatial and temporal scales. The main aim of this review paper critically evaluates and assess the existing data and field of research on trends and variabilities of precipitation and temperature extreme events. This study describes and formulates research findings on precipitation and temperature extremes variabilities, trends, and change point detections that occur within the study area considering the historical and future projected conditions. To realize a comprehensive assessment of a review, important research findings from research data support and academic research engines were used. The results revealed that the amount of precipitation did not show a consistent pattern within the Lake Tana basin under historical and projected timescales. The basin has more variation in monthly precipitation extremes, erratic and fragile than the seasonal and annual precipitation timescales. The minimum, maximum and mean temperatures have all increased significantly in most of the stations under RCP 2.6, RCP 4.5, and RCP 8.5 radiative forcing scenarios. All studies suggested that temperature change is more increasing pronounced than precipitation changes in the Lake Tana basin. The study provides useful information for comprehending precipitation and temperature extreme inconsistencies, tendencies, and characteristics within the Lake Tana basin.

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