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Estimation of evapotranspiration using satellite remote sensing and ground based meteorological data: A case study in Gumara river basin, Ethiopia = Estimación de evapotranspiración usando sensores remotos e información meteorológica: Un estudio de caso en la cuenca del rio Gumara, Etiopia

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Año de publicación 2016
Idioma Inglés

Descripción: The Surface energy Balance System (SEBS) was utilised for evaluating the spatial and temporal variation of the actual evapotranspiration (ETa) over the Gumara basin, using satellite images from Moderate-resolution Imaging Spectroradiometer (MODIS) in combination with meteorological data of the study area, for 12 days of 2006, 6 corresponding to the dry season, and 6 corresponding to the rainy season. The daily ETa was estimated for these days, and then a simple extrapolation of ETa proportionally to the ETp was used to compute the monthly and annual ETa. SEBS estimated an average ETa of 0.84 mm/day for the 6 dates of January, and an average of 4.24 mm/day for the 6 dates of the rainy season. The lowest value was obtained in Jan 2nd, with 0.73 mm/day, and the highest was observed in Sep 21st. Monthly ETa showed the lowest value of 34.20 mm in February; whereas the highest was observed in June with 115.67 mm. The annual ETa was about 847.12 mm, for the 2006. The average ETp estimated for the 12 analysed dates by Pan Evaporation method was about 4.15 mm/day, whereas for the Penman Monteith method was approximately 4.22 mm/day. Particularly for the rainy dates, the daily ETa was very similar to the ETp, with an average difference of 0.16 mm/day. In the water balance method, the difference between the estimated runoff with the ETa by SEBS, and the measured runoff at the station was of approximately 175.60 mm/year. According to these results and, although there are uncertainties associated with the model and the inputs utilised, the SEBS seemed to estimate reasonable values of ETa for the study area.
Citación recomendada (normas APA)
: Lizeth Nataly Monje Hincapié, "Estimation of evapotranspiration using satellite remote sensing and ground based meteorological data: A case study in Gumara river basin, Ethiopia = Estimación de evapotranspiración usando sensores remotos e información meteorológica: Un estudio de caso en la cuenca del rio Gumara, Etiopia", Etiopía:-, 2016. Consultado en línea en la Biblioteca Digital de Bogotá (https://www.bibliotecadigitaldebogota.gov.co/resources/2089273/), el día 2025-05-18.

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Fuente Biblioteca Virtual Banco de la República
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Año de publicación 2016
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Cobertura Etiopía

Estimation of evapotranspiration using satellite remote sensing and ground based meteorological data: A case study in Gumara river basin, Ethiopia = Estimación de evapotranspiración usando sensores remotos e información meteorológica: Un estudio de caso en la cuenca del rio Gumara, Etiopia

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