GENE FELDMAN, NASA GSFC / SCIENCE PHOTO LIBRARY GENE FELDMAN, NASA GSFC / SCIENCE PHOTO LIBRARY
Global biosphere. Coloured satellite image of Earth's biosphere, centered on the North Atlantic Ocean, showing the distribution of vegetation on land and marine phytoplankton. The colours represent chlorophyll densities: from red (most dense) through yellow & blue to pink (least dense) in the oceans; and from dark green to pale yellow on land. The ocean data was acquired over 1978-86 by the Coastal Zone Colour Scanner (CZCS) on NASA's Nimbus-7 research satellite. The land data was collected over 1982-85 by the Advanced Very High Resolution Radiometer (AVHRR) on the NOAA-7 weather satellite.
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