The seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean.
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)
Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.
Dinoflagellate Ceratium azoricum (Photo : Sophie Marro)
Foraminifera Ruber (Photo : Fabien Lombard)
Dinoflagellate Ceratium pentagonum var robustum (Photo : Sophie Marro)
Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)
Copepode Sapphirina iris (Photo : Fabien Lombard)
Instrumented buoy (Photo : David Luquet)
Jellyfish Pelagia noctilica (Photo : Fabien Lombard)
Dinoflagellate Ceratium paradoxides (Photo : Sophie Marro)
Instrumented buoy (Photo : Emilie Diamond)
Ctenaria Beroe ovata (Photo : Fabien Lombard)
Dinoflagellate Ceratium ranipes grd mains (Photo : Sophie Marro)
Large rosette sampler used in the "World Ocean Circulation Experiment". This rosette has 36 10-liter Niskin bottles, an acoustic pinger (lower left), an "LADCP" current profiler (yellow long tube at the center), a CTD (horizontal instrument at the bottom), and transmissometer (yellow short tube at the center). (Photo : L. Talley)
Dinoflagellés Ceratium massiliense var protuberans (Photo : Sophie Marro)
Coccolithophore (Photo : Sophie Marro)
Carte bathymétrique mondiale
