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• Courault, D
• Bsaibes, A
• Kpemlie, E
• Hadria, R
• Hagolle, O
• Marloie, O
• Hanocq, J
• Olioso, A
• Bertrand, N
• Desfonds, V
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• Courault, D
• Bsaibes, A
• Kpemlie, E
• Hadria, R
• Hagolle, O
• Marloie, O
• Hanocq, J
• Olioso, A
• Bertrand, N
• Desfonds, V
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• Courault, D
• Bsaibes, A
• Kpemlie, E
• Hadria, R
• Hagolle, O
• Marloie, O
• Hanocq, J
• Olioso, A
• Bertrand, N
• Desfonds, V

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Sensors 2008, 8(5), 3460-3481; doi:10.3390/s8053460

Article

Assessing the Potentialities of FORMOSAT-2 Data for Water and Crop Monitoring at Small Regional Scale in South-Eastern France

Dominique Courault ^1,* , Aline Bsaibes ¹ , Emmanuel Kpemlie ¹ , Rachid Hadria ¹ , Olivier Hagolle ² , Olivier Marloie ¹ , Jean-F. Hanocq ¹ , Albert Olioso ¹ , Nadine Bertrand ¹  and Véronique Desfonds ¹

¹ UMR 1114 INRA-UAPV EMMAH, Domaine St Paul, 84914 Avignon, France ² CNES (DCT/SI/MO) et CESBIO BPI 811, 18 avenue E.Belin, 31401 Toulouse Cedex 9, France

* Author to whom correspondence should be addressed.

Received: 1 February 2008 / Accepted: 20 May 2008 / Published: 23 May 2008

(This article belongs to the Special Issue Remote Sensing of Natural Resources and the Environment)

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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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