34 



H. MOHN. 



M.-N. KL 



Maximum Velocity of Wind, metres per second. 



Number of winds with velocities = or ^ 15 m. per sec. 



Gales are most frequent from the East, and in November. The highest 

 observed wind- velocity was 20 m. per sec. on the 29*^'* September, Wind 

 NE. May, June and January have no gales. 



The strong east winds are relatively mild winds with an average 

 temperature of 6° above the normal, and they are accompanied with snow^ 

 in 18 cases out of 32, or 56 per cent. The pressure is between 750 mm. 

 and 722 mm., average 742 mm. This proves that the east winds come 

 mainly from the sea as incurved cyclonic winds, having their minimum 

 pressure towards the North or North-west in Ross Sea. 



