Implementation of a two-source model for estimating the spatial variability of olive evapotranspiration using satellite images and ground-based climate data

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datacite.alternateIdentifier.citationWater (Switzerland), 10 (3), 2018
datacite.alternateIdentifier.doi10.3390/w10030339
datacite.alternateIdentifier.issn2073-4441
datacite.creatorFuentes-Peñailillo, Fernando
datacite.creatorOrtega-Farías, Samuel Orlando
datacite.creatorAcevedo-Opazo, César
datacite.creatorFonseca-Luengo, David
datacite.date2018
datacite.rightsAcceso abierto
datacite.subjectCrop Water Requirements
datacite.subjectLatent Heat Flux
datacite.subjectOlive Orchard
datacite.subjectRemote Sensing
datacite.subjectSpatial Variability
datacite.subjectClimate Models
datacite.subjectErrors
datacite.subjectEvapotranspiration
datacite.subjectFarms
datacite.subjectLatent Heat
datacite.subjectMean Square Error
datacite.subjectOrchards
datacite.subjectRemote Sensing
datacite.subjectSatellites
datacite.subjectTrees (mathematics)
datacite.subjectActual Evapotranspiration
datacite.subjectCrop Water Requirements
datacite.subjectGround Measurements
datacite.subjectMean Absolute Error
datacite.subjectOlive Orchards
datacite.subjectPhenological Stage
datacite.subjectRoot Mean Square Errors
datacite.subjectSpatial Variability
datacite.subjectHeat Flux
datacite.subjectClear Sky
datacite.subjectDrip Irrigation
datacite.subjectEvapotranspiration
datacite.subjectGround-based Measurement
datacite.subjectHeat Flux
datacite.subjectLandsat
datacite.subjectLatent Heat Flux
datacite.subjectModel
datacite.subjectNet Radiation
datacite.subjectPerformance Assessment
datacite.subjectPlant Water Relations
datacite.subjectRemote Sensing
datacite.subjectSatellite Imagery
datacite.subjectShrub
datacite.subjectSpatial Variation
datacite.titleImplementation of a two-source model for estimating the spatial variability of olive evapotranspiration using satellite images and ground-based climate data
dc.contributor.authorFONSECA LUENGO, DAVID ALEXANDER
dc.date.accessioned2025-10-06T14:22:10Z
dc.date.available2025-10-06T14:22:10Z
dc.description.abstractA study was carried out to evaluate the potential use of the two-source Shuttleworth and Wallace (SW) model to compute the intra-orchard spatial variability of actual evapotranspiration (ET) of olive trees using satellite images and ground-based climate data. The study was conducted in a drip-irrigated olive orchard using satellite images (Landsat 7 ETM+), which were acquired on clear sky days during the main phenological stages (2009/10 growing season). The performance of the SW model was evaluated using instantaneous latent heat flux (LE) measurements that were obtained from an eddy correlation system. At the time of satellite overpass, the estimated values of net radiation (Rn<inf>i</inf>) and soil heat flux (G<inf>i</inf>) were compared with ground measurements from a four-way net radiometer and soil heat flux plates, respectively. The results indicated that the SW model subestimated instantaneous LE (W m-2) and daily ET (mm d-1), with errors of 12% and 10% of observed values, respectively. The root mean square error (RMSE) and mean absolute error (MAE) values for instantaneous LE were 26 and 20 W m-2, while those for daily values of ET were 0.31 and 0.28 mm d-1, respectively. Finally, the submodels computed Rn<inf>i</inf> and G<inf>i</inf> with errors of between 4.0% and 8.0% of measured values and with RMSE and MAE between 25 and 39W m-2. © 2018 Elsevier B.V., All rights reserved.
dc.description.ia_keywordwere, values, model, satellite, olive, images, ground
dc.formatPDF
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/6967
dc.language.isoen
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.relationinstname: ANID
dc.relationreponame: Repositorio Digital RI2.0
dc.rights.driverinfo:eu-repo/semantics/openAccess
dc.sourceWater (Switzerland)
dc.subject.ia_odsODS 13: Acción por el clima
dc.subject.ia_oecd1nCiencias Naturales
dc.subject.ia_oecd2nCiencias Biológicas
dc.subject.ia_oecd3nCiencias del Medio Ambiente
dc.type.driverinfo:eu-repo/semantics/article
dc.type.driverhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.type.openaireinfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
oaire.citationEdition2018
oaire.citationIssue3
oaire.citationTitleWater (Switzerland)
oaire.citationVolume10
oaire.fundingReferenceANID FONDECYT 1130729 (Regular), FONDEF D10I1157
oaire.fundingReferenceUniversidad de Talca A2C2
oaire.licenseConditionObra bajo licencia Creative Commons Atribución 4.0 Internacional
oaire.licenseCondition.urihttps://creativecommons.org/licenses/by/4.0/
oaire.resourceTypeArtículo
oaire.resourceType.enArticle
relation.isAuthorOfPublication2abb7039-98e6-40f4-93d6-49ed4f6258aa
relation.isAuthorOfPublication.latestForDiscovery2abb7039-98e6-40f4-93d6-49ed4f6258aa
uct.catalogadorjvu
uct.comunidadRecursos Naturalesen_US
uct.departamentoDepartamento de Ciencias Ambientales
uct.indizacionScience Citation Index Expanded - SCIE
uct.indizacionScopus
uct.indizacionEi Compendex
uct.indizacionPubMed Central (PMC)
uct.indizacionDOAJ
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