48 smithsonian miscellaneous collections vol. 90 



Temperature. 



Hours: The values are from observations at 8\ 14 11 , and 2i\ 

 calculated according to the following formula, which gives 

 an approximation to the mean of 24 hours : 



i[2(8 h +i 4 h )+5(2i h )]. 



ICELAND 

 AKUREYRI 



Authority. 



Section Meteorologique de Loggildingarstofan, Reykjavik, 

 Iceland. 

 Pressure. 



Site: The height of the barometer above Mean Sea Level was : 



1921 January-1922 August 35.0 m 



1922 September-1923 September 4.0 m 



1923 October-1930 7.0 m 



All values have been reduced to Mean Sea Level by applying 



the following corrections : 



1921 January-1922 August +3-2 mm 



1922 September-1923 September +0.4 mm 



1923 October-1930 +0.6 mm 



Hours: The values of pressure do not refer to a fixed hour, but 



are the mean values of three to six observations 

 a day. The diurnal variation is negligible in com- 

 parison with the variation from month to month. 

 Notes: All values have been corrected to normal gravity (Lat. 

 45 ) by applying a correction of +1.3 mm. The 

 latitude previously quoted, 65 ° 40' N., was in- 

 correct. There has been no change of site. 



CRIMSEY 

 Authority. 



Section Meteorologique de Loggildingarstofan. Reykjavik, 

 Iceland. 

 Temperature. 



Hours: The hours of observation were 8 h and I4 h throughout. 

 Mean: The values are the means of observations at 8 h and I4 b . 

 Precipitation. 



The height of the rim of the rain gage above the ground is 1.9 m. 



