A year from the Antarctic

he seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean

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Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.

Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)

Dinoflagellate Ceratium pentagonum var robustum (Photo : Sophie Marro)

Diatom genus Rhizosolenia (Photo : Sophie Marro)

Dinoflagellate Ceratium arietinum var arietinum (Photo : Sophie Marro)

Instrumented buoy (Photo : Emilie Diamond)

Carte de la camapagne du navire oceanographique James COOK

Le trajet du bateau sur fond couleur de la mer.

Ciliate (Photo : Fabien Lombard)

Copepode Coryceide (Photo : Fabien Lombard)

Remote-controlled sailboat

The research vessel "Marion Dufresne"

Ciliate (Photo : Fabien Lombard)

Phytoplankton bloom observed in the Barents Sea (North of Norway) in August 2010 by the ocean color sensor MODIS onboard NASA satellite Aqua. Changes in ocean color result from modifications in the phytoplankton composition and concentration. The green colors are likely associated with the presence of diatoms. The shades of light blue result from the occurrence of coccolithophores, phytoplankton organisms that strongly reflect light due to their chalky shells - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)

Instrumented buoy (Photo : Emilie Diamond)

Underwater glider (Photo : David Luquet)

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The Glider

Average chlorophyll concentration in the surface ocean (from mi-September 1997 to August 2007) from the ocean color sensor SeaWiFS (NASA). Subtropical gyres, in the center of the oceanic basins, are characterized by very low concentrations of chlorophyll a (dark blue) - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)

Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)