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.
Keywords: FORMOSAT-2; crop monitoring; evapotranspiration; LAI; albedo; surface temperature
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Courault, D.; Bsaibes, A.; Kpemlie, E.; Hadria, R.; Hagolle, O.; Marloie, O.; Hanocq, J.-F.; Olioso, A.; Bertrand, N.; Desfonds, V. Assessing the Potentialities of FORMOSAT-2 Data for Water and Crop Monitoring at Small Regional Scale in South-Eastern France. Sensors 2008, 8, 3460-3481.
Courault D, Bsaibes A, Kpemlie E, Hadria R, Hagolle O, Marloie O, Hanocq J-F, Olioso A, Bertrand N, Desfonds V. Assessing the Potentialities of FORMOSAT-2 Data for Water and Crop Monitoring at Small Regional Scale in South-Eastern France. Sensors. 2008; 8(5):3460-3481.
Courault, Dominique; Bsaibes, Aline; Kpemlie, Emmanuel; Hadria, Rachid; Hagolle, Olivier; Marloie, Olivier; Hanocq, Jean-F.; Olioso, Albert; Bertrand, Nadine; Desfonds, Véronique. 2008. "Assessing the Potentialities of FORMOSAT-2 Data for Water and Crop Monitoring at Small Regional Scale in South-Eastern France." Sensors 8, no. 5: 3460-3481.