1915- ^o- 5- ROALD Amundsen's ANTARCTIC expedition: meteorology. 27 



W i n d - R o s e s . 



Climate of Framheim. 



Atmospheric Pressure. 



Taking the means of the 3 daily observations as the means for the 

 months, and extracting the highest and lowest obsened values, we have 



April May June July Aug. Sept. Oct. Nov. Dec. Jan. 

 Mean 7398 738.3 734 7 7343 7362 735.2 727.8 750-1 754 4 7468 mm 



Max 7582 7548 751.6 7509 7J.0.7 7495 754Ô 7Ô3-4 760.8 753.7 » 

 Min. 7300 7129 7252 7186 7255 713.4 714.9 739.8 742.7 738.1 » 

 Range 28 2 419 26 4 32 3 24 2 36.1 39.7 23.6 24.1 15.6 » 



The pressure is very variable. The total range is 766.8—712.9 or 

 53.9 mm. It is highest in December, and lowest in October. Range 754.4 

 — 727.8 or 16.6 mm. The corresponding pressures at MacMurdo Sound are^ 



744-6 742.3 739.4 738.6 741.3 740.5 732.1 752.6 755.7 747.5 mm., 

 and the differences between Mac Murdo Sound and Framheim 



+ 4.8 - 4.0 - 4.7 -i- 4.3 - 5.J — 5.3 - 4.3 -25 - 1.3 - 0.7 mm. 

 Reducing the Framheim pressures to the 4-years' series of MacMurdo 

 Sound ^, we get as preliminary normals 



•April May June Julj- Aug. Sept. Oct. Nov. Dec. Jan. 

 Mac Murdo S. 746.1 742.5 742.1 740.6 739.2 743.1 736.5 745.9 747.6 743.2 mm 

 Framheim 741.3 7385 737.4 736.3 734.1 737.8 732.2 743.4 746.3 742.5 ^ 



The pressure at Framheim is always lower than at MacMurdo Sound. 



1 Met. Z 1914, p. 551. 



