ANTARCTIC ADVENTURE AND RESEARCH 



Temperature in 



of snowfall over the interior of the Plateau make it 

 unlikely that this is a complete solution of the problem. 



Captain Kidson has applied the fruitful theory of 

 Bjerknes to the question of Antarctic circulation, and 

 he pictures these two belts of anticyclones (along 30° S. 

 latitude) and cyclones (along 60° S.) as developing 

 along the margins of inflowing and outflowing cur- 

 rents of air (see Figure 2y) . These latter maintain 

 the interchange between cool dry air from the Pole 

 and warm moist air from the equator, and the cyclones 

 develop as eddies where the polar front moves along- 

 side the tropical front. This whole series of eddies 

 and currents probably is to be conceived as moving 

 round the Pole en masse from west to east, while the 

 wands composing the highs (or anticyclones) rotate 

 counterclockwise about its center (and vice versa for 

 the lows or cyclones). If his scheme is correct, there 

 may be a real connection between the blizzard winds 

 and the southeast trades. For (as I suggested in 1920) 

 as regards direction and relation to dominant pressures, 

 we might quite reasonably describe the characteristic 

 ''southeasters" of Antarctica as the ''polar trade winds." 



Summarizing the winds of the southern hemisphere, 



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