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Archive Ouverte HAL-IRD |  |
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Archive Ouverte HAL-IRD | |
| HAL : ird-00467991, version 1 |
| DOI : 10.1016/j.rse.2009.12.011 |
| Code IRD Horizon : PAR00004869 |
| Fiche détaillée |  Récupérer au format |
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| Remote Sensing of Environment, RSE-07569 (2010) 7 |
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| Effective soil moisture sampling depth of L-band radiometry: A case study |
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M. J. Escorihuela 1A. Chanzy 2 |
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| (2010) |
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| The aim of this study is to analyze the influence of the soil moisture sampling depth in the parameterization of soil emission in microwave radiometry at L-band. The analysis is based on brightness temperature, soil moisture and temperature measurements acquired over a bare soil during the SMOSREX experiment. A more detailed profile of surface soil moisture was obtained with a soil heat and water flows mechanistic model. It was found that (1) the soil moisture sampling depth depends on soil moisture conditions, (2) the effective soil moisture sampling depth is shallower than provided by widely used field moisture sensors, and (3) the soil moisture sampling depth has an impact on the calibration of soil roughness model parameters. These conclusions are crucial for the calibration and validation of remote sensing data at L-band. |
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| 1 : | isardSAT |
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department of hydrology |
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| 2 : | Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes (EMMAH) |
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Institut national de la recherche agronomique (INRA) : UMR1114 – Université d'Avignon |
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| 3 : | Écologie fonctionnelle et physique de l'environnement (EPHYSE - UR1263) |
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Institut national de la recherche agronomique (INRA) : UR1263 |
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| 4 : | Centre d'études spatiales de la biosphère (CESBIO) |
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CNRS : UMR5126 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III |
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| domaine | : | Sciences du Vivant/Ecologie, Environnement/Ecosystèmes |
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| Soil moisture – Passive microwave – SMOS – Roughness – Sampling depth |
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| Liste des fichiers attachés à ce document : | |||||
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| ird-00467991, version 1 | |
| http://hal.ird.fr/ird-00467991 | |
| oai:hal.ird.fr:ird-00467991 | |
| Contributeur : Dominique Bruel | |
| Soumis le : Vendredi 25 Juin 2010, 16:39:20 | |
| Dernière modification le : Jeudi 1 Juillet 2010, 15:10:22 | |
