identical temoeratures . As an alternative to the correlation of 

 temperature and salinity, it is suggested that the correlation of 

 temperature and color might serve to distinguish different water masses. 



An example of the spectral variation of the backscattered light 

 measured at a flight altitude of 500 ft is shown in the accompanying 



a. 



figure- To emohasize chromaticity as distinct from briohtness, the 

 spectra are presented in terms of their normalized trichromatic 

 coefficients. (As usual, the blue coordinate is omitted.) The color 

 of the ocean water is shown by its relation to the llaht reflected from 

 a neutral gray card. The displacement of the color toward the green 

 and yellow, relative to the clear ocean water, is also shown. The 

 figure shows the sites over which the spectra were obtained. 



If eguipment of requisite sensitivity can be developed, it mav be 

 possible to see significant ocean-color differences at satellite 

 altitudes and thus to add an observable parameter which, correlated with 

 temoerature, will make subtle features detectable over the hiah seas. 



8-7 



