90 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 70 



POSSIBLE CAUSES OF THE VARIATION IN TEMPERATURE IN THE 

 SURFACE OF THE SEA AND OF THE AIR 



To what causes shall we attribute these remarkable and in part 

 very great variations in the temperatures of the ocean surface and 



1898 » 1900 i 22,H567S9i0 



Figure 46. Continuation of figure 45. 



of the air in different parts of the ocean? We may consider a 

 whole series of possibilities which suggest themselves. 



Such temperature variations can be brought about by variations 

 of the temperature of the water masses themselves which are trans- 

 ported by the Gulf Stream and other ocean currents. In this case 



