title: Assessing the Potentialities of FORMOSAT-2 Data for Water and Crop Monitoring at Small Regional Scale in South-Eastern France.
abstract: Water monitoring at the scale of a small agricultural region is a key point to insure a good crop development particularly in South-Eastern France, where extreme climatic conditions result in long dry periods in spring and summer with very sparse precipitation events, corresponding to a crucial period of crop development. Remote sensing with the increasing imagery resolution is a useful tool to provide information on plant water status over various temporal and spatial scales. The current study focussed on assessing the potentialities of FORMOSAT-2 data, characterized by high spatial (8m pixel) and temporal resolutions (1-3 day/time revisit), to improve crop modeling and spatial estimation of the main land properties. Thirty cloud free images were acquired from March to October 2006 over a small region called Crau-Camargue in SE France, while numerous ground measurements were performed simultaneously over various crop types. We have compared two models simulating energy transfers between soil, vegetation and atmosphere: SEBAL and PBLs. Maps of evapotranspiration were analyzed according to the agricultural practices at field scale. These practices were well identified from FORMOSAT-2 images, which provided accurate input surface parameters to the SVAT models.
authors.affiliation: UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France. courault@avignon.inra.fr.
authors.forename: Dominique
authors.initials: D
authors.lastname: Courault
authors.affiliation: UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France. absaibes@avignon.inra.fr.
authors.forename: Aline
authors.initials: A
authors.lastname: Bsaibes
authors.affiliation: UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France. ekpemlie@avignon.inra.fr.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Kpemlie
authors.affiliation: UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France.
authors.forename: Rachid
authors.initials: R
authors.lastname: Hadria
authors.affiliation: CNES (DCT/SI/MO) et CESBIO BPI 811, 18 avenue E.Belin, 31401 Toulouse Cedex 9, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Hagolle
authors.affiliation: UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Marloie
authors.affiliation: UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France.
authors.forename: Jean-F
authors.initials: JF
authors.lastname: Hanocq
authors.affiliation: UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France.
authors.forename: Albert
authors.initials: A
authors.lastname: Olioso
authors.affiliation: UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France.
authors.forename: Nadine
authors.initials: N
authors.lastname: Bertrand
authors.affiliation: UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France.
authors.forename: Véronique
authors.initials: V
authors.lastname: Desfonds
keywords: FORMOSAT-2; LAI; albedo; crop monitoring; evapotranspiration; surface temperature