Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterization

[EN] Accurate monthly evapotranspiration (ET) estimation is essential for many forest, climate, and hydrological applications, as well as for some agricultural uses. In this study, the relationship between ET and relative evapotranspiration (F) using land surface, and atmospheric variables was asses...

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Authors: Walker, Elisabet, Venturini, Virginia
Format: article
Publication Date:2024
Country:España
Institution:Universitat Politècnica de València (UPV)
Repository:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Language:English
OAI Identifier:oai:riunet.upv.es:10251/202441
Online Access:https://riunet.upv.es/handle/10251/202441
Access Level:Open access
Keyword:Evapotranspiración
Coberturas terrestres
Variables atmosféricas
Humedad del suelo
Evapotranspiración relativa
Evapotranspiration
Land covers
Atmospheric variables
Soil moisture
Relative evapotranspiration
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spelling Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterizationMejora en la estimación de la evapotranspiración mediante el acoplamiento de la humedad del suelo y variables atmosféricas en la parametrización de la evapotranspiración relativaWalker, ElisabetVenturini, VirginiaEvapotranspiraciónCoberturas terrestresVariables atmosféricasHumedad del sueloEvapotranspiración relativaEvapotranspirationLand coversAtmospheric variablesSoil moistureRelative evapotranspiration[EN] Accurate monthly evapotranspiration (ET) estimation is essential for many forest, climate, and hydrological applications, as well as for some agricultural uses. In this study, the relationship between ET and relative evapotranspiration (F) using land surface, and atmospheric variables was assessed with 17 FLUXNET sites data in savanna, cropland, and forest land covers, distributed all over the world. A sigmoid (Fs) and a logarithmic (Fl) F expression were included in Walker et al. s (2019a,b) equations to evaluate their impact on the accuracy of ET estimations. The new parameterizations of ET outperformed the original expression, showing root mean square errors lower than 24% of the mean observed ET. The results presented here suggest that atmospheric parameters, coupled with land explanatory variables included in F estimates, produce more precise ET estimations. In addition, Soil Moisture Active Passive (SMAP) products were used to obtain global maps of ET and compared with Global Landsurface Evaporation Amsterdam Methodology (GLEAM) and Terra Moderate Resolution Imaging Spectroradiometer (MODIS) MOD16 products, displaying the flexibility of these new parametrizations with different sources of data.[ES] La estimación precisa de la evapotranspiración (ET) mensual es esencial para muchas aplicaciones forestales, climáticas e hidrológicas y para algunos usos agrícolas. En este estudio, se evaluó la relación entre ET y la evapotranspiración relativa (F) utilizando variables de la superficie y atmosféricas con datos de 17 sitios FLUXNET en coberturas terrestres de sabana, cultivo y bosques, distribuidos por todo el mundo. Se incluyeron en las ecuaciones de Walker et al. (2019a,b) una expresión de F sigmoidea (Fs) y otra logarítmica (Fl) para evaluar su impacto en la precisión de las estimaciones de ET. Las nuevas parametrizaciones de ET superaron a la expresión original, mostrando errores cuadráticos medios inferiores al 24% de la ET media observada. Los resultados presentados aquí sugieren que los parámetros atmosféricos, junto con las variables explicativas de la superficie incluidas en las estimaciones de F, producen estimaciones de ET más precisas. Asimismo, los productos de Soil Moisture Active Passive (SMAP) fueron usados para obtener mapas globales de ET y comparados con los productos Global Landsurface Evaporation Amsterdam Methodology (GLEAM) y Terra Moderate Resolution Imaging Spectroradiometer (MODIS) MOD16, mostrando la flexibilidad de estas nuevas parametrizaciones con diferentes fuentes de datos.Universitat Politècnica de ValènciaRepositorio Institucional de la Universitat Politècnica de València Riunet20242024-01-30journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/202441reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial - Compartir igual (by-nc-sa) http://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/2024412026-06-13T07:49:27Z
dc.title.none.fl_str_mv Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterization
Mejora en la estimación de la evapotranspiración mediante el acoplamiento de la humedad del suelo y variables atmosféricas en la parametrización de la evapotranspiración relativa
title Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterization
spellingShingle Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterization
Walker, Elisabet
Evapotranspiración
Coberturas terrestres
Variables atmosféricas
Humedad del suelo
Evapotranspiración relativa
Evapotranspiration
Land covers
Atmospheric variables
Soil moisture
Relative evapotranspiration
title_short Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterization
title_full Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterization
title_fullStr Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterization
title_full_unstemmed Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterization
title_sort Improving the evapotranspiration estimation by coupling soil moisture and atmospheric variables in the relative evapotranspiration parameterization
dc.creator.none.fl_str_mv Walker, Elisabet
Venturini, Virginia
author Walker, Elisabet
author_facet Walker, Elisabet
Venturini, Virginia
author_role author
author2 Venturini, Virginia
author2_role author
dc.contributor.none.fl_str_mv Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Evapotranspiración
Coberturas terrestres
Variables atmosféricas
Humedad del suelo
Evapotranspiración relativa
Evapotranspiration
Land covers
Atmospheric variables
Soil moisture
Relative evapotranspiration
topic Evapotranspiración
Coberturas terrestres
Variables atmosféricas
Humedad del suelo
Evapotranspiración relativa
Evapotranspiration
Land covers
Atmospheric variables
Soil moisture
Relative evapotranspiration
description [EN] Accurate monthly evapotranspiration (ET) estimation is essential for many forest, climate, and hydrological applications, as well as for some agricultural uses. In this study, the relationship between ET and relative evapotranspiration (F) using land surface, and atmospheric variables was assessed with 17 FLUXNET sites data in savanna, cropland, and forest land covers, distributed all over the world. A sigmoid (Fs) and a logarithmic (Fl) F expression were included in Walker et al. s (2019a,b) equations to evaluate their impact on the accuracy of ET estimations. The new parameterizations of ET outperformed the original expression, showing root mean square errors lower than 24% of the mean observed ET. The results presented here suggest that atmospheric parameters, coupled with land explanatory variables included in F estimates, produce more precise ET estimations. In addition, Soil Moisture Active Passive (SMAP) products were used to obtain global maps of ET and compared with Global Landsurface Evaporation Amsterdam Methodology (GLEAM) and Terra Moderate Resolution Imaging Spectroradiometer (MODIS) MOD16 products, displaying the flexibility of these new parametrizations with different sources of data.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-01-30
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/202441
url https://riunet.upv.es/handle/10251/202441
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Compartir igual (by-nc-sa)
http://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento - No comercial - Compartir igual (by-nc-sa)
http://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universitat Politècnica de València
publisher.none.fl_str_mv Universitat Politècnica de València
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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