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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Assessment of reference evapotranspiration methods in semi-arid regions: Can weather forecast data be used as alternate of ground meteorological parameters?
Journal of Arid Environments, Volume 74, No. 12, Year 2010
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Description
In this study, the performance of three empirical methods for estimating reference evapotranspiration (ET0): Makkink (Mak) and Priestley-Taylor (PT) (radiation-based) and Hargreaves-Samani (HARG) (temperature-based) were assessed in semi-arid regions. The values of ET0 derived using these three methods were compared to those estimated using the reference FAO Penman-Monteith (FAO-PM) method under semi-arid conditions of the Tensift basin (central of Morocco) and the Yaqui Valley (Northwest Mexico). The results showed that the HARG method is the best one to estimate ET0 over both semi-arid test sites. Conversely, the performance of the other two empirical methods was poor except under humid conditions. However when the parameters α and Cm figurate in the PT and Mak equations are locally calibrated, the performance of these two methods greatly improved. Additionally, this study showed that, when measurements of meteorological parameters needed for estimating ET0 (which are not always available especially in developing countries) are lacking, the climatic data generated with numerical weather prediction models provide an alternative and effective solution to estimate ET0. In this regard, data generated using a weather forecast model (ALADIN) over the Tensift basin showed that the HARG model is the most accurate one for estimating the spatio-temporal variability of ET0. © 2010 Elsevier Ltd.
Authors & Co-Authors
Er-Raki, Salah
Morocco, Marakech
Université Cadi Ayyad
Chehbouni, Abdelghani
France, Toulouse
Center for Space Studies of the Biosphere
Khabba, Saïd
Morocco, Marakech
Université Cadi Ayyad
Simonneaux, Vincent
France, Toulouse
Center for Space Studies of the Biosphere
Jarlan, Lionel
France, Toulouse
Center for Space Studies of the Biosphere
Morocco, Casablanca
Direction de la Météorologie Nationale, Morocco
Ouldbba, Abdelaziz
Morocco, Casablanca
Direction de la Météorologie Nationale, Morocco
Rodriguez, Julio Cesar
Mexico, Hermosillo
Universidad de Sonora
Allen, Richard Glen
United States, Moscow
University of Idaho
Statistics
Citations: 109
Authors: 8
Affiliations: 5
Identifiers
Doi:
10.1016/j.jaridenv.2010.07.002
ISSN:
01401963
e-ISSN:
1095922X
Research Areas
Cancer
Environmental
Study Locations
Morocco