1. In-situ multifrequency dielectric measurements to improve soil permittivity models for radiometric observations of soil in the high latitudes
- Author
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Demontoux Francois, Bonnaudin Fabrice, Mialon Arnaud, Tsague King Junior, Bircher Simone, Kerr Yann, Wigneron Jean-Pierre, Ruffie Gilles, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Centre d'études spatiales de la biosphère (CESBIO), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Interactions Sol Plante Atmosphère (UMR ISPA), and Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
- Subjects
Permittivity ,gradients ,L band ,Topsoil ,Moisture ,0211 other engineering and technologies ,0207 environmental engineering ,Context (language use) ,Soil science ,02 engineering and technology ,Dielectric ,Soil ,remote sensing ,Environmental science ,Radiometric dating ,dielectric profile ,020701 environmental engineering ,[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment ,Microwave ,021101 geological & geomatics engineering - Abstract
International audience; In the context of soil monitoring from microwave radiometric observations, the knowledge of the soil permittivity is an important factor in order to guarantee the accuracy of models inversions. Previous studies have showed the impact of temperature and moisture gradients in the top soil layer on remote sensing monitoring of soil. So, we aim here to investigate a way to increase our knowledge of the permittivity profile of the top soil layer, in particular at the P and L band. The solution we selected is based on a new equipment for continuous in-situ measurements of dielectric soil profiles. First measurement results over a sandy soil after rainfall are presented.
- Published
- 2020