DR GENE FELDMAN, NASA GSFC / SCIENCE PHOTO LIBRARY DR GENE FELDMAN, NASA GSFC / SCIENCE PHOTO LIBRARY
The global biosphere. A sequence of false-colour satellite images of Earth's biosphere, showing the distribution of vegetation on land and phytoplankton in the oceans. The colours represent chlorophyll densities: from red (most dense) through yellow & blue to pink (least dense) in the oceans; & from dark green to pale yellow on land. The ocean data was acquired by the Coastal Zone Colour Scanner (CZCS), a radiometer with optical & infrared channels on NASA's Nimbus-7 satellite. The land data is derived from the visible & infra- red sensors of the Advanced Very High Resolution Radiometer (AVHRR) on the NOAA-7 satellite.
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