0.5 !r'' "'"'™ ,0 50 100 data for the red, yellow, 



green, and blue portions of 

 the spectra. For each of 

 these bands the graph shows 

 the percentage, on a log- 

 arithmic scale, of the in- 

 coming radiation that is 

 FIGURE 5. TRANSPARENCY STATION. 23 APRIL 1951. left at any depth. The 



problem is to determine hovj much of the radiation is concentrated 

 in each band. Figure 6 is an adaptation of a graph presented on 

 page 105 of The Oceans (19iL[-2) showing the distribution of the 

 energy spectrmi at the surface of the radiation from sun and sky, 



plotted a'- a function of wave length. 

 Taking O.Glj, micron as the lower end 

 of the red band and measuring the area 

 under the curve, one arrives at a fig- 

 ure of 6l\.ay/o for the red and 35.7^ for 



4 6 8 I I 2 1 4 1 6 1 8 2.0 2.2 2.4 

 WAVE LENGTH IN MICRONS 



FIGURE 6. ENERGY SPECTRUM OF RADIATION FROM the remaining bands . It was decided 



SUN AND SKY AT THE SURFACE. 



to use the curve for tiia green band as representative of the re- 

 maining 35.7^. 



By starting with the total absorbed heat of 3,339 g. cal, 

 cmT'- it now can be determined that 2,ll4-7 g. cal. cm^S were 

 absorbed from the red band and 1,192 g. cal. cmr2 were absorbed 

 from all other bands. By using these figures in conjunction 

 with the appropriate curve in figure ^, table V v;as constructed, 

 showing the amounts absorbed from each band in each layer. The 

 total number of g. cal« cmT2 absorbed in each laver for all bands 



25 



