Journal of Remote Sensing Technology
Journal of Remote Sensing Technology(JRST)
ISSN:2330-1767(Print)
ISSN:2330-1775(Online)
Frequency: Annually
Website: www.bowenpublishing.com/jrst/
Mapping Evapotranspiration for different Landcover in the Lake Chad Region of Nigeria using Landsat Datasets
Abstract:
The availability of the actual water use from agricultural crops is considered as the key factor for irrigation water management, water resources planning, and water allocation. Evapotranspiration (ET) is a key factor in water resources management and effective irrigation planning. Even in the same geographical location under the same climatic condition, ET exhibits different spatial properties across different land covers and vegetation types. The specific objectives are to estimate daily ET (ET24) and determine the variation with regards to different land cover in the Lake Chad region of Nigeria. The study used the Surface Energy Balance Algorithm for Land (SEBAL) Level 1 Flat model to estimate ET24 at a higher spatial resolution using Landsat data for years 1999, 2013 and 2015 while the Nigerian Meteorological Agency observations were used as ground truth data. The study showed that the daily ET varied from 0.49 to 6.88 mm/day over the study area for the periods of study. Overall, wetlands and forests have a higher rate of ET than grass and agricultural lands, and the bare surfaces have the lowest ET.
Keywords:Evapotranspiration (ET); Surface Energy Balance; Landsat; Land cover
Author: Adeyeri Oluwafemi Ebenezer,Okogbue Emmanuel C.,Akinluyi Frank O.

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