WlIDLIi \'()L. NOTi:S. NORTH ATLANTIC 8/ 



Temperaturk. 



Site: The hei.^ht of the station h1)ovc Mean Sea Level was: 



] 885 to 1900 506 ni. 



191 1 to 1920 547 ""'• 



Instruments and Exposure: For the early period no information 

 can be obtained. From 1911 to 1915 August, maxi- 

 mum and minimum thermometers by Tonnelot were 

 installed in a small meteorological shelter which 

 was placed in the center of a coui't-yard. From 

 1 91 5 September, a standard thermometer screen of 

 the Madrid type was in use. 

 Hours: The standard adopted is the mean between the mean 

 daily maximum and mean daily minimum tem- 

 perature. 

 Prechmtatjon. 



Instrument: A Hellman rain gage was in use throughout the 

 period with the rim 1.55 m. above the ground. 



FAROES 



THORSHAVN 

 Authority. 



Det Danske Meteorologiske Institut, Copenhagen. Denmark. 

 Pressure. 



Site: The height of the barometer above Mean .^ea Level was : 



1872 October to 1903 September 9.2 m. 



1903 October to 1905 October i i.o m. 



1905 November to 1907 July 5.9 m. 



1907 August to 1920 25.7 m. 



All values have been reduced to Mean Sea Level by applying 

 the following corrections : 



1872 October to 1903 September -I- 0.9 mm. 



1903 October to 1905 October + 1.0 mm. 



1905 November to 1907 July +0.6 mm. 



T907 August to 1920 +2.4 mm. 



Hours: The values are the means of observations at 8'\ 14'' 



and 2i'\ 

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

 45°) by applying a correction of + i.t mm. 

 Temper.\tur]:. 



Hours: The values are from observations at 8'\ 14'', and 

 21^, calculated from the following formula, which 

 gives an approximation to the mean of 24 hours : 



U8" + I4" + 2X(2l'0] 



