@misc{10481/71818,
year = {2021},
month = {11},
url = {http://hdl.handle.net/10481/71818},
abstract = {Precipitation deficit and more extreme drought and precipitation events are expected to increase in the Mediterranean
region due to global warming. A great part of this region is covered by olive orchards, representing
97.5% of the world’s olive agricultural area. Thus, the adaptation of olive cultivation demands climate-smart
management, such as the optimization of water use efficiency, since evapotranspiration is one of the most
important components of the water balance. The novelty of this work is the combination of the remote sensing
data fusion and the Two Source Energy Balance (TSEB) model (through Sentinel-2 and Sentinel-3 imagery) to
estimate the actual daily evapotranspiration (ETd), at high spatial (20 m) and temporal (daily) resolution, in an
olive orchard under two management regimes: herbaceous free (HF) and herbaceous-cover (HC); along a three
years period, based on the hypothesis that TSEB is still able to track and estimate the evapotranspiration over
more complex canopies. The study was carried out from 2016 to 2019 in an olive orchard in the South of Spain,
where the flux estimates were validated and assessed by in situ eddy covariance (EC) measurements. The results
show better agreement in HC for net radiation (Rn) and the soil heat flux (G), but similar for both surfaces
regarding the sensible (H) and latent (λE) heat fluxes, as well as ETd. On both surfaces greater differences obtained
at higher H, and the magnitude of overestimation of λE and ETd were influenced by the EC energy
imbalance. By contrast, G was overestimated with HC probably influenced by herbs, and equally underestimated
for HF surfaces. The obtained results are in agreement with similar studies in tree crop orchards, and show the
consistency of the used methodology and its usefulness for some farming activities, even on the more heterogeneous
surface.},
organization = {Spanish Government	CGL2017-83538-C3-1-R	
PID2020-117825GB-C21},
organization = {European Commission	PRE2018-085638},
organization = {Universidad de Granada/CBUA},
publisher = {Elsevier},
keywords = {Remote sensing},
keywords = {Multispectral Instrument},
keywords = {Sea land surface temperature Radiometer},
keywords = {Eddy covariance},
title = {Modelling actual evapotranspiration using a two source energy balance model with Sentinel imagery in herbaceous-free and herbaceous-cover Mediterranean olive orchards},
doi = {10.1016/j.agrformet.2021.108692},
author = {Aguirre García, Sergio David and Aranda Barranco, Sergio and Serrano Ortiz, Penélope and Pérez Sánchez-Cañete, Enrique and Guerrero Rascado, Juan Luis},
}