Ocean Chlorophyll Concentrations (Southern Hemisphere). This image shows season-long composites of ocean chlorophyll concentrations. Although derived from visible radiometric measurements made by the VIIRS instrument on Suomi NPP.
Therefore the date ranges are included. This false-colored image makes the data stand out. Also the purple and blue colors represent lower chlorophyll concentrations. The oranges and reds represent higher chlorophyll concentrations. And These differences in color indicate areas with lesser or greater phytoplankton biomass. Credit: NASA/Suomi NPP/Norman Kuring
Therefore you will see the extreme colors and the brightness of this picture. It also shows amazing measurements from the satellite view. Each color represent something different.