72 



EKDAHL AND KEELING 



< 



10" 



10" 



10" 



0.1 



I I I I Mil 



400 years- 



ii 



11.1 years 



am 



T 10 



STANDARD 

 , years 



Fig. 15 Attenuation of 11- and 85-year bands (drawn at '/, peak height), vs. 

 the atmosphere to ocean transfer time, T axn . The value of Tg^ used as a 

 standard (6 years) is indicated by an arrow. A 400-year cycle, identified in 

 tree-ring samples by Suess, 2 7 is shown as a reference. 



100 



10" 



< 



I I0" 2 



< — 



10" 



10 



 ■■■■■'■'■"■ ■'" I  ' I——-—- 



11.1 years 



I I I I I II ll I I I I I I 111 I L 



1000 \ 

 STANDARD 



100 



'dm 



, years 



1 



10,000 



Fig. 16 Attenuation of 11- and 85-year bands, and a 400-year cycle, vs. the 

 deep-ocean to surface-layer transfer time, T^ m . The value of T^ m used as the 

 standard (1500 years) is indicated by an arrow. 



