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PLATE 1 Average global sea level variability for 1987 and 1988. Data 

 were obtained by the Geosat satellite altimeter. Figure provided by C. |. 

 Koblinsky, NASA. 



PLATE 2 Multiyear composite of global ocean pigment concentration 

 (November 1978 to June 1986). Data were acquired by the Coastal Zone 

 Color Scanner on the Nimbus-7 satellite. Purple and blue areas con- 

 tained low concentrations of pigment in surface water and yellow and red 

 areas indicate high concentrations of pigment. Figure provided by Gene 

 Feldman, NASA. 



