278 H. MOHN. METEOROLOGY. [norw. POL. exp. 



In the dark season the wind shifts generally against the sun. Only from 4 

 p. m. to 6 p. m. and from 8 p. m. to 10 p. m. does it veer with the sun. Sum 

 of backing 389°, sum of veering 29°. 



The North component exceeds the South component continually from 7 a. m. 

 to 8 p. m. The South component prevails continually over the North component 

 from 8 p. m. to 7 a. m. 



The East component prevails over the West component continually from 

 Midnight or 1 a. m. to Noon or 1 p. m., and the West component prevails conti- 

 nually over the East component from 1 p. m. to 1 a. m. 



The periodical winds make the prevaiUng wind of the dark season more 

 northerly during the hours about noon, more southerly during the midnight-hours, 

 more easterly during the first part of the day, more westerly after noon until 

 midnight. 



In the sunny season the wind veers generally with the sun. It backs only 

 from 2 a. m. to 4 a. m., from 8 a. m. to 10 a. m. and from 6 p. m. to 8 p. m. 

 Total veering 416°, total backing 56°. 



The South component prevails over the North component continually from 11 p. m. 



to 1 p. m. The North component predominates continually from 1 p. m. to 11 p. m. 



The West component prevails over the East component continually from 5 



a. m. to 5 p. m. and the East component prevails (with one exception at 8 p. m.) 



from 5 p. m. to 5 a. m. 



The periodical winds make the prevailing wind of the season more southerly 

 during the night and forenoon, more northerly during the afternoon, more westerly 

 during the day, and more easterly during the afternoon and night. 



In the equinoctial months the wind shifts generally ivith the sun during the 

 night and morning, and against the sun from 10 a. m. to 10 p. m. Total veering 

 410° and total backing 410°. 



The North component prevails over the South component continually from 3 

 a. m. to 1 p. m., and the South component over the North from 1 p. m. to 3 

 a. m., except at 10 p. m. 



The periodical winds make the prevailing wind of the months more northerly 



in the morning and more southerly in the latter half of the day, more easterly 



before noon and in the afternoon, more westerly during the night and about noon. 



The diurnal period of the winds' direction is a phenomenon which still awaits 



an explanation. The observations made at the Fram's station give the winds as 



