Remote Sensing and Ocean Color

Type : OS
Nature : Production scientifique
Au bénéfice du Laboratoire : Oui
Statut de publication : Publié
Année de publication : 2016
Lieu de publication : -
Titre de l'ouvrage : Land Surface Remote Sensing in Urban and Coastal Areas
ISBN : 978-1-78548-160-4
Nombre de pages : -
Editeur de presse : -
Volume : -
Fascicule : -
Pages : 141-183
Auteurs (1) : CHAMI Malik
Editeurs scientifiques (2) : BAGHDADI Nicolas MEHREZ Zribi
DOI : 10.1016/B978-1-78548-160-4.50004-2
URL : -
Abstract : In the Earth’s remote sensing field, the term “water color” is used when analyzing the spectral distribution of visible radiation exiting an aquatic environment (ocean, lakes and rivers) to reach a satellite or airborne spectroradiometer sensor. In particular, when studying the determination and estimation methods of suspended matter concentration in the oceans, such as phytoplanktonic organisms, matters of mineral origin or even detrital and dissolved organic matters, the term “ocean color” is used. The main and historical interest in using ocean color satellite technologies to observe aquatic environment relies on the quantification of the phytoplanktonic biomass on a global scale. Indeed, phytoplanktonic organisms, which are microscopic unicellular algae often present in low concentrations in a given region, represent approximately 50% of the vegetation on the planet because of the very large surface of the world’s oceans. Consequently, these organisms have a significant impact both on marine life, since they form the first link in the marine food chain, and on the climate, especially through the carbon cycle. Those organisms in fact help to capture the atmospheric carbon dioxide, one of the main greenhouse gases, through the process of the photosynthesis and primary production. A wide variety of phytoplankton species exist in seawater, categorized into different types according to their size and the photosynthetic pigments they contain. For example, we can mention the type of the diatoms, dinoflagellates or cyanobacteria. Other common applications of ocean color satellite technologies concern the monitoring of toxic algae (for example, red tide), the study of nutrient dynamics, the study of marine ecosystem ecology, the monitoring of river discharge in coastal areas and their impact on the health of coastal ecosystems.
Mots-clés : Bio-optical properties; Chl-a; Cloud masking; Detrital organic matter; Hydrosol concentrations; Mineral matters; Ocean Color; Phytoplankton; Radiation; Remote Sensing
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Citation :
Chami M (2016) Remote Sensing and Ocean Color. Land Surface Remote Sensing in Urban and Coastal Areas, In: Baghdadi N, Mehrez Z (eds), , 141-183 | doi: 10.1016/B978-1-78548-160-4.50004-2