GENE FELDMAN, NASA GSFC / SCIENCE PHOTO LIBRARY GENE FELDMAN, NASA GSFC / SCIENCE PHOTO LIBRARY
The global biosphere: southern hemisphere. False- colour composite satellite image of Earth's biosphere, showing the distribution of vegetation on land & phytoplankton in the oceans. 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 a period of 7 years by the Coastal Zone Colour Scanner, a radiometer on NASA's Nimbus-7 research satellite. The land data was collected over a period of 3 years by the Advanced Very High Resolution Radiometer on the NOAA-7 weather satellite.
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