314 



H. MOHN. METEOROLOGY. 



[nORW. POL. EXP. 



The weighted and smoothed means for the meteorological seasons, (Dec. — 

 Febr. etc.), the dark season, the sunny season, and the equinoctial months, 

 are given in the following Table. 



As will be seen from these Tables, there is no great difference between 

 the mean velocity of the winds from different quarters. The velocity ranges 

 generally between 4 and 5 metres per second. The strongest and weakest 

 winds are: 



(Diagrams PI. I. 1 cm. ^ 1 m. p. s.). 



Winter 



Spring . 



Summer 



Autumn 



Dark Season .... 

 Sunny Season . . . 

 Equinoctial months 



Strongest Winds. 



NNW 5-3 SE 5-0 



ENE 4-7 NNW 44 



E 5-1 W 4-6 



NE 4-9 WSW 4-9 



SSE 5'1 NNW 5-3 



E 5-3 WSW 4-4 



NE 5-0 WSW 4-9 



Weakest Winds. 



ENE 4-3 SSW 4-1 



N 4-2 W 3-8 



S 4-1 NNW 4-4 



ESE 4-6 N 4-8 



E 4-4 SSW 4-5 



SSW 4-2 N 4-3 



E 3-6 S 3-8 



From the sums of the observed velocities for each of the 16 wind-direc- 

 tions, I have computed, for each month, the corresponding North-, East-, South- 

 and West-Components, the resultant-direction of the wind, and the resul- 

 tant velocity-sum (Res.); from this, by dividing by the number of obser- 

 vations (n), the resultant velocity (V) in metres per second is obtained. The 

 following Table shows the result of this computation. 



