CLIMATOLOGY 



of a huge icy plateau at the Pole was demonstrated, 

 it seemed likely that this intensely cold region would 



F. 



+70 



+60° 



■»-50° 



+40' 



+30 



+20 



+ 10 



-10° 



-20 



-30° 



-40° 



N D Jan. FMAMJJASONDecJF 



Fig. 28. — Mean monthly temperatures at certain 

 Australian and Antarctic stations. 



For comparison the mean monthly temperature in 78 deg. N. is 

 also given. (Antarctic and Arctic values from Vol. I, pp. 84-85, 

 of report of G. C. Simpson. From Geographical Review, 1928.) 



exhibit a fairly permanent high pressure control and 

 this still seems to be the dominant control close to the 

 polar surface. But considerations of wind circulation 

 in the upper air in Antarctica and of the precipitation 



183 



