Estimation and partitioning of actual daily evapotranspiration at an intensive olive grove using the STSEB model based on remote sensing

Melanie Häusler, Nuno Conceição, Luca Tezza, Juan M. Sánchez, Manuel L. Campagnolo, Andreas J. Häusler, João M.N. Silva, Thorsten Warneke, Georg Heygster and M. Isabel Ferreira

Agricultural Water Management, 2018, vol. 201, issue C, 188-198

Abstract: This study is based on the application of an existing simplified two-source energy balance (STSEB) model, using medium-resolution satellite imagery (Landsat) to estimate instantaneous (at the satellite overpass time) and daily actual crop evapotranspiration (ETa) over an intensive olive grove. Daily values were obtained by the use of the evaporative fraction method and corrected for latent heat, available energy, and evaporative fraction biases (beta-factor correction). Model estimates were compared to ground-based measurements. Heat flux densities (eddy covariance method) were recorded, and five Landsat images at approximately monthly intervals were used, covering our study site in 2011. Comparison with ground measurements showed a maximum difference of −0.6 mm day−1 before, and 0.2 mm day−1 after beta-factor correction for the main plot.

Keywords: Landsat; Evaporation; Transpiration; Evaporative fraction method (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:201:y:2018:i:c:p:188-198

DOI: 10.1016/j.agwat.2018.01.027

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