Abstract
In a marine coastal ocean monitoring and prediction system, multisensor in-situ and remote sensing observations (of coastal currents, fronts, eddies, upwelling patterns, internal waves, phytoplankton distribution, algae patchiness, oil pollution and high-resolution wind fields) need integration and combination with fine resolution numerical ocean models. Only via such integrated systems will realistic representation of the initial state be derived and properly utilized to provide reliable and accurate forecasts of, for instance, location of eddies, upwelling patterns, and high-concentration of toxic algae. The role of sar in such systems is addressed and characterized in terms of current status and further need for research and development. Use of synergetic remote sensing observations, in particular from optical remote sensing, is also considered in this context.
Résumé
Dans un système de prédiction et de surveillance en zone côtière, on a besoin d’intégrer les données obtenues par capteurs in-situ et par télédétection (courants côtiers, fronts, tourbillons, signatures de remontées d’eaux froides, ondes internes, distribution de phytoplancton, répartition des algues et champs de vent haute résolution) avec les résultats issus des modèles numériques à haute résolution. C’est uniquement par l’intermédiaire de tels systèmes intégrés que des représentations réalistes de l’état initial pourront être déduites et utilisées correctement afin de fournir des prévisions précise et fiable, par exemple, de la position des tourbillons, des remontées d’eaux froides ou des formations et des hautes concentrations en algues toxiques. Le rôle du RSO dans de tels systèmes est évoqué et caractérisé en fonction de l’état actuel des connaissances et des besoins complémentaires en recherche et développement. L’utilisation en synergie d’observations de télédétection, en particulier optique, est aussi abordée dans ce contexte.
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Johannessen, J.A., Garello, R., Chapron, B. et al. Marine sar analysis and interpretation system — MARSAIS. Ann. Télécommun. 56, 655–660 (2001). https://doi.org/10.1007/BF02995559
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DOI: https://doi.org/10.1007/BF02995559
Key words
- Remote sensing
- Land observation satellite
- Oceanographic survey
- Synthetic aperture radar
- Sea state
- Surface state
- Integrated system