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Communication dans un congrès

Root-zone soil moisture analysis using microwave radiometry

Abstract : The SMOS project (CNES/ESA) aims at developing a L-band interferometric radiometer able to provide global estimates of surface soil moisture (ws) with a sampling time of 2-3 d. Several studies showed that the assimilation of ws time series enable one to retrieve the root-zone water content, provided the atmospheric forcing is available from ancillary information. Two real cases of variational assimilation of ws are presented. A simple iterative optimization of the direct model is applied to the ISBA (Interactions between Soil, Biosphere, and Atmosphere) surface scheme. The next step is the direct assimilation of brightness temperatures as likely to be observed from space. A first example of soil moisture and vegetation characteristics analysis using L-band radiometric measurements and the ISBA model is presented. A field campaign was set in Southwestern France in order to validate such an approach using a long enough data-set.
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Communication dans un congrès
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Déposant : Migration Prodinra <>
Soumis le : jeudi 4 juin 2020 - 06:09:36
Dernière modification le : vendredi 31 juillet 2020 - 12:02:01




Jean-Christophe Calvet, Joël Noilhan, Jean-Pierre Wigneron, Yann Kerr. Root-zone soil moisture analysis using microwave radiometry. IGARSS'01 International Geoscience and Remote Sensing Symposium, Jul 2001, Sydney, Australia. ⟨10.1109/IGARSS.2001.976048⟩. ⟨hal-02762190⟩



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