30 November 1984
Vol 226, Issue 4678

About The Cover

Satellite ocean color image showing the distribution of phytoplankton pigments around the Galápagos Islands during El Niño. This computer-processed image, color-coded according to concentration range, was produced from data collected on 1 February 1983 using the Coastal Zone Color Scanner aboard NASA's Nimbus-7 satellite. Regions of high concentrations (above 1 milligram per cubic meter) are orange; intermediate levels, yellow and green; lowest levels (less than 0.2 milligram per cubic meter), blue. Major islands are black and clouds white. North is at the top; equator lies horizontally just above the center of the image. See page 1069. [G. Feldman, State University of New York, Stony Brook 11794; D. Clark, National Oceanic and Atmospheric Administration, Washington, D.C. 20233; and D. Halpern, National Oceanic and Atmospheric Administration, Seattle, Washington 98115]