Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Egypte → Impact of Climate Change on Potential Evapotranspiration and Runoff in the Awash River Basin in Ethiopia

Cairo University (2012)

Impact of Climate Change on Potential Evapotranspiration and Runoff in the Awash River Basin in Ethiopia

Daniel GebretensayAsore

Titre : Impact of Climate Change on Potential Evapotranspiration and Runoff in the Awash River Basin in Ethiopia

Auteur : Daniel GebretensayAsore

Etablissement de soutenance : Cairo University

Grade : Master of Science (MS) 2012

Résumé
Quantitative estimates of hydrologic effects of climate change are essential for understanding and solving the potential water resources management problems associated with water supply for domestic and industrial water use, irrigation, power generation, flood mitigation, and agriculture as well as for protection of the natural environment. Evapotranspiration is an important part of the hydrologic cycle and an important indicator for climate changes. However, the lack of accurate estimation and the misunderstanding of potential evapo-transpiration are major problems for hydrologic studies involving water resources modeling under both stationary and changing climate conditions. The objective of this thesis is to study the impacts of climate change on potential evapotranspiration (PET) of the Awash basin in Ethiopia, to investigate how the change in PET and precipitation can impact the runoff in the basin, and to study the range of hydrologic response for different Awash sub-basins.This study starts with a comparison between the estimates of potential evapotranspiration using Penman-Monteith and Thornthwaitemethods to identify the more appropriate and reliable method for the basin. Three Global Climate Models (GCMs) : CGCM3 (Canada), CNRM (France) and ECHAM5 (Germany) with two emission scenarios of A2 and B1 were investigated. Temperature and precipitation data are used as inputs in hydrologic modeling system (HEC-HMS) to predict the impact of climate change on the runoff.

Mots Clés : Awash basin, GCMs, Climate change, PET, HEC-HMS,

Présentation

Page publiée le 14 avril 2020