L-band emission of rough soil surface covered with a grass litter layer including a moisture gradient: comparison between experimental data and a numerical model approach
International audience In the context of the European Space Agency's (ESA) Soil Moisture and Ocean Salinity (SMOS) mission, we present a study of the emission of rough surfaces at 1.4 GHz and the effects on this emission of a grass litter layer covering the surface. A new approach for the calcu...
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ftmeteofrance:oai:HAL:hal-00512478v1 2024-09-15T18:30:09+00:00 L-band emission of rough soil surface covered with a grass litter layer including a moisture gradient: comparison between experimental data and a numerical model approach Demontoux, François Lawrence, Heather Mironov, Valery L.G., Kosolapova Mialon, Arnaud Duffour, Clément Kruszewski, Alain Mironov, V. Wigneron, Jean Pierre Kerr, Yann H. Laboratoire de l'intégration, du matériau au système (IMS) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS) Écologie fonctionnelle et physique de l'environnement (EPHYSE) Institut National de la Recherche Agronomique (INRA) Radiophysics of remote sensing laboratory Kirensky Institute of Physics Russian Academy of Sciences Moscow (RAS) Centre d'études spatiales de la biosphère (CESBIO) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Universitat de València (UV). ESP. Valencia, Spain 2010-09-27 https://hal.science/hal-00512478 en eng HAL CCSD hal-00512478 https://hal.science/hal-00512478 PRODINRA: 247362 dans actes de The 3rd International Symposium on Recent Advances in Quantitative Remote Sensing: RAQRS'III The 3rd International Symposium on Recent Advances in Quantitative Remote Sensing: RAQRS'III https://hal.science/hal-00512478 The 3rd International Symposium on Recent Advances in Quantitative Remote Sensing: RAQRS'III, Universitat de València (UV). ESP., Sep 2010, Valencia, Spain. pp.12 http://hal.archives-ouvertes.fr/hal-00512478 [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/conferenceObject Conference papers 2010 ftmeteofrance 2024-06-25T00:01:47Z International audience In the context of the European Space Agency's (ESA) Soil Moisture and Ocean Salinity (SMOS) mission, we present a study of the emission of rough surfaces at 1.4 GHz and the effects on this emission of a grass litter layer covering the surface. A new approach for the calculation of rough surface scattering and emission at L-band is used. This approach relies on the use of ANSYS's numerical computation software HFSS (High Frequency Structure Simulator), which in turn solves Maxwell's equations using the Finite Element Method (FEM). The interest of this approach is that it can be extended to calculate the emission of complicated multilayer media, including features such as volume effects and inclusions, as well as rough surfaces. This is therefore especially useful for the problem of the emission from soil-litter systems in forests. We are currently working to use FEM method to compute also thermal effects and water infiltration effects in ground. Coupling electromagnetic and thermal computation we will be able to study scattering of media such as permafrost or effects of rapid changes in temperature condition. It can be very useful for global observations with a frequent repeat coverage. In the present study we will present water infiltration in ground effects on the emissivity of soil-litter system. In particular we will focus on those effects on the previous results. Conference Object permafrost Météo-France: HAL |
institution |
Open Polar |
collection |
Météo-France: HAL |
op_collection_id |
ftmeteofrance |
language |
English |
topic |
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes Demontoux, François Lawrence, Heather Mironov, Valery L.G., Kosolapova Mialon, Arnaud Duffour, Clément Kruszewski, Alain Mironov, V. Wigneron, Jean Pierre Kerr, Yann H. L-band emission of rough soil surface covered with a grass litter layer including a moisture gradient: comparison between experimental data and a numerical model approach |
topic_facet |
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience In the context of the European Space Agency's (ESA) Soil Moisture and Ocean Salinity (SMOS) mission, we present a study of the emission of rough surfaces at 1.4 GHz and the effects on this emission of a grass litter layer covering the surface. A new approach for the calculation of rough surface scattering and emission at L-band is used. This approach relies on the use of ANSYS's numerical computation software HFSS (High Frequency Structure Simulator), which in turn solves Maxwell's equations using the Finite Element Method (FEM). The interest of this approach is that it can be extended to calculate the emission of complicated multilayer media, including features such as volume effects and inclusions, as well as rough surfaces. This is therefore especially useful for the problem of the emission from soil-litter systems in forests. We are currently working to use FEM method to compute also thermal effects and water infiltration effects in ground. Coupling electromagnetic and thermal computation we will be able to study scattering of media such as permafrost or effects of rapid changes in temperature condition. It can be very useful for global observations with a frequent repeat coverage. In the present study we will present water infiltration in ground effects on the emissivity of soil-litter system. In particular we will focus on those effects on the previous results. |
author2 |
Laboratoire de l'intégration, du matériau au système (IMS) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS) Écologie fonctionnelle et physique de l'environnement (EPHYSE) Institut National de la Recherche Agronomique (INRA) Radiophysics of remote sensing laboratory Kirensky Institute of Physics Russian Academy of Sciences Moscow (RAS) Centre d'études spatiales de la biosphère (CESBIO) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Universitat de València (UV). ESP. |
format |
Conference Object |
author |
Demontoux, François Lawrence, Heather Mironov, Valery L.G., Kosolapova Mialon, Arnaud Duffour, Clément Kruszewski, Alain Mironov, V. Wigneron, Jean Pierre Kerr, Yann H. |
author_facet |
Demontoux, François Lawrence, Heather Mironov, Valery L.G., Kosolapova Mialon, Arnaud Duffour, Clément Kruszewski, Alain Mironov, V. Wigneron, Jean Pierre Kerr, Yann H. |
author_sort |
Demontoux, François |
title |
L-band emission of rough soil surface covered with a grass litter layer including a moisture gradient: comparison between experimental data and a numerical model approach |
title_short |
L-band emission of rough soil surface covered with a grass litter layer including a moisture gradient: comparison between experimental data and a numerical model approach |
title_full |
L-band emission of rough soil surface covered with a grass litter layer including a moisture gradient: comparison between experimental data and a numerical model approach |
title_fullStr |
L-band emission of rough soil surface covered with a grass litter layer including a moisture gradient: comparison between experimental data and a numerical model approach |
title_full_unstemmed |
L-band emission of rough soil surface covered with a grass litter layer including a moisture gradient: comparison between experimental data and a numerical model approach |
title_sort |
l-band emission of rough soil surface covered with a grass litter layer including a moisture gradient: comparison between experimental data and a numerical model approach |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00512478 |
op_coverage |
Valencia, Spain |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
dans actes de The 3rd International Symposium on Recent Advances in Quantitative Remote Sensing: RAQRS'III The 3rd International Symposium on Recent Advances in Quantitative Remote Sensing: RAQRS'III https://hal.science/hal-00512478 The 3rd International Symposium on Recent Advances in Quantitative Remote Sensing: RAQRS'III, Universitat de València (UV). ESP., Sep 2010, Valencia, Spain. pp.12 http://hal.archives-ouvertes.fr/hal-00512478 |
op_relation |
hal-00512478 https://hal.science/hal-00512478 PRODINRA: 247362 |
_version_ |
1810471629172506624 |