186 HOBBS— ROLE OF GLACIAL ANTICYCLONE [April 24, 



Sudden warming of the air at the end of the glacial blizzard — foehn 



effect in descending currents 201 



Intensive foehn effect within outlets 201 



The Greenland foehn 201 



Foehn level and foehn clouds on Greenland coast 202 



Areas of relative calm and of air highly charged with moisture corre- 

 sponding to the central plains upon the ice domes 203 



Few early data 203 



Recently acquired evidence from Antarctica 203 



Recent data from Greenland 205 



The cirri above and about the existing continental glaciers 206 



The earlier data 206 



Later investigations 207 



The evolution of the glacial blizzard and its abrupt termination in foehn. . 207 



The sequence of events 207 



Source of the precipitated snow 208 



Amundsen's meteorological records at Framheim 209 



Alternations of calm and gale 209 



The theory of circumpolar whirls vs. the glacial anticyclones 210 



Views of Ferrell and Hahn 210 



View of Meinardus 211 



Objective studies by Barkow in Antarctica 212 



De Quervain's studies in Southwest Greenland 213 



Distribution of air circulation in successive levels at the inland-ice 



margin 214 



Winds about the margin of the inland-ice as a measure of the vigor of 



the Antarctic anticyclone 215 



The zone of control off " Wilkes Land " 215 



Effect of the Greenland anticyclone upon migrating cyclonic depressions. 218 

 Supposed passage of cyclones across the continental glacier of Green- 

 land 218 



Nansen's observations 218 



The high pressure storms and the " tauben " depressions registered 



at Danmarks-Haven 219 



The fixed low pressure areas marginal to the inland-ice masses 220 



Antarctica 220 



Greenland ^ 220 



The role of the glacial anticyclones of high latitudes in the general air 



circulation 221 



Circulation through cyclones and anticyclones, not merely within 



them 221 



Belts of progressing cyclones and anticyclones about the Antarctic 



glacial anticyclones 221 



The role of the glacial anticyclones in the general air circulation to 

 draw down the air of the upper stratum in the troposphere and to 

 direct it equatorward 223 



