WHOLE VOL. NOTES. NORTH ATLANTIC 



51 



Pressure. 



Instrument: A Kew Pattern barometer was in use throughout. 



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

 45°) by applying a correction of -0.85 mm. 

 Temperature. 



Means: The standard adopted is an approximation to the mean 

 of 24 hourly readings given by the mean of the dry bulb 

 readings at 9/ and 21 h and of the daily maxima and minima 

 given by self-registering thermometers, i.e. 



-l(9 1, + 2i" + Max. + Min.) 

 Precipitation. 



Instrument: A Babinet pluviometer (of diameter 11.27 cm ) was 

 in use throughout the period. 



SPITSBERGEN 



GREEN HARBOUR 

 Authority. 



Det Norske Meteorologiske Institutt, Oslo, Norway. 

 Remarks: The pressure, temperature and precipitation are given 

 from December 1911-August 1930, inclusive. This station 

 was closed September 15, 1930. A new station was estab- 

 lished August 28 in Longyear City, Advent Bay, Lat. 78 ° 

 13' N., Long. 15 38' E., H b = 53 .o m. 



WEST INDIES 

 CHRISTIANSTED, VIRGIN ISLANDS 

 Authority. 



United States Weather Bureau, Washington, D. C. 



BRIDGETOWN, BARBADOS 

 Authority. 



Barbados Blue Books. 

 Precipitation. 



The observations were taken at the Botanic Station, Bridgetown. 

 Site: The height of the rain gage above Mean Sea Level was 



190 ft. throughout. 

 Instrument: The rain gage employed until the beginning of 1927 

 was of obsolete pattern. A new rain gage was taken into 

 use during 1927. 



