574 



H. MOHN. METEOROLOGY. 



[nORW. POL. EXP. 



north coaM of Greenland must have a higher temperature than the interior, 

 notwithstanding the latitude. 



In the winter months we have the cold pole in Siberia and the cold pole 

 in Greenland. To these, my temperature-sections add a third cold pole at 

 the North Pole. It does not coalesce with the Greenland one, the temperature 

 on the north coast of Greenland, at the level of the sea, being higher. 



While the Siberian cold pole turns into a maximum of temperature 

 during summer, the cold poles in Greenland and at the North Pole remain 

 through all the months of the year. 



From the charts we find the mean temperature for the months at the 

 North Pole (Column M) to be 



The harmonic analysis gives the equation 



M=- 22-°66 + 20-°88 sin (266°56' + m) + 2-" 65 sin (109°7' + 2m). 



Minimum — 4i°4 January 30. 



Maximum -f 0-°7 July 16. 



Annual Range 42-° 1. 



The equation for the annual period of the temperature of the Fram 

 (p. 484) has rather smaller coefficients for the first and second term, and about 

 the same phase-angles, as the equation for the Pole. The range for the Pole 

 is greater than that for the Fram. 



