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Soil moisture sensor calibration for organic soil surface layers

hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorBIRCHER, Simone
hal.structure.identifierDepartment of Geosciences and Natural Resource Management [Copenhagen] [IGN]
dc.contributor.authorANDREASEN, Mie
hal.structure.identifierFinnish Meteorological Institute [FMI]
dc.contributor.authorVUOLLET, Johanna
hal.structure.identifierFinnish Meteorological Institute [FMI]
dc.contributor.authorVEHVILÄINEN, Juho
hal.structure.identifierFinnish Meteorological Institute [FMI]
dc.contributor.authorRAUTIAINEN, Kimmo
hal.structure.identifierForschungszentrum Jülich GmbH | Centre de recherche de Jülich | Jülich Research Centre [FZJ]
hal.structure.identifierEarth and Life Institute [Louvain-La-Neuve] [ELI]
dc.contributor.authorJONARD, François
hal.structure.identifierForschungszentrum Jülich GmbH | Centre de recherche de Jülich | Jülich Research Centre [FZJ]
dc.contributor.authorWEIHERMÜLLER, Lutz
hal.structure.identifierCentre National d’Etudes Spatiales
dc.contributor.authorZAKHAROVA, Elena
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWIGNERON, Jean-Pierre
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorKERR, Yann H.
dc.date.accessioned2024-04-08T12:01:51Z
dc.date.available2024-04-08T12:01:51Z
dc.date.issued2016
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196175
dc.description.abstractEnThis paper's objective is to present generic calibration functions for organic surface layers derived for the soil moisture sensors Decagon ECH2O 5TE and Delta-T ThetaProbe ML2x, using material from northern regions, mainly from the Finnish Meteorological Institute's Arctic Research Center in Sodankylä and the study area of the Danish Center for Hydrology (HOBE). For the Decagon 5TE sensor such a function is currently not reported in the literature. Data were compared with measurements from underlying mineral soils including laboratory and field measurements. Shrinkage and charring during drying were considered. For both sensors all field and lab data showed consistent trends. For mineral layers with low soil organic matter (SOM) content the validity of the manufacturer's calibrations was demonstrated. Deviating sensor outputs in organic and mineral horizons were identified. For the Decagon 5TE, apparent relative permittivities at a given moisture content decreased for increased SOM content, which was attributed to an increase of bound water in organic materials with large specific surface areas compared to the studied mineral soils. ThetaProbe measurements from organic horizons showed stronger nonlinearity in the sensor response and signal saturation in the high-level data. The derived calibration fit functions between sensor response and volumetric water content hold for samples spanning a wide range of humus types with differing SOM characteristics. This strengthens confidence in their validity under various conditions, rendering them highly suitable for large-scale applications in remote sensing and land surface modeling studies. Agreement between independent Decagon 5TE and ThetaProbe time series from an organic surface layer at the Sodankylä site was significantly improved when the here-proposed fit functions were used. Decagon 5TE data also well-reflected precipitation events. Thus, Decagon 5TE network data from organic surface layers at the Sodankylä and HOBE sites are based on the here-proposed natural log fit. The newly derived ThetaProbe fit functions should be used for hand-held applications only, but prove to be of value for the acquisition of instantaneous large-scale soil moisture estimates.
dc.language.isoen
dc.publisherEuropean Geosciences Union
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.title.enSoil moisture sensor calibration for organic soil surface layers
dc.typeArticle de revue
dc.identifier.doi10.5194/gi-5-109-2016
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalGeoscientific Instrumentation, Methods and Data Systems Discussions
bordeaux.page109-125
bordeaux.volume5
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02638461
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02638461v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geoscientific%20Instrumentation,%20Methods%20and%20Data%20Systems%20Discussions&rft.date=2016&rft.volume=5&rft.spage=109-125&rft.epage=109-125&rft.au=BIRCHER,%20Simone&ANDREASEN,%20Mie&VUOLLET,%20Johanna&VEHVIL%C3%84INEN,%20Juho&RAUTIAINEN,%20Kimmo&rft.genre=article


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