ATMOSPHERIC CARBON DIOXIDE AND RADIOCARBON: II 135 



DISCUSSION BY ATTENDEES 



Livingstone: Can you give us an estimate of the proportions of the ocean 

 surface water in which the pco 2 exceeds that of the air over it, and that in 

 which p C Q is less? 



Bacastow: Generally, in the tropics where the water is warm, C0 2 is 

 released to the atmosphere; in polar regions where the water is colder, C0 2 is 

 absorbed. 



