| Autor: |
Véronique Desfonds, Nadine Bertrand, Albert Olioso, Jean-F. Hanocq, Olivier Marloie, Olivier Hagolle, Rachid Hadria, Emmanuel Kpemlie, Aline Bsaibes, Dominique Courault |
| Jazyk: |
angličtina |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
Sensors, Vol 8, Iss 5, Pp 3460-3481 (2008) |
| Druh dokumentu: |
article |
| ISSN: |
1424-8220 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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