WHOLE VOL. NOTES. SOUTH ATLANTIC 121 



SOUTH GEORGIA (GRYTVIKEN) 



Lat. 54° 13' S. Long. 36° 33' W. H„ = 4 m. 



Authority. 



Direccion de Meteorologia, Argentina. 

 Pressure. 



The pressure data have been derived from hourly l)arograph 

 vahies checked by eye observations. 

 Temperature. 



From January 1905 to June 1907 the original means deduced 

 from the tri-daily observations were too high owing to faulty 

 exposure of the thermometers which were affected by solar 

 radiation. For this period the means were derived from the 

 o1)servation at 8^ brought to mean of day and by the mean 

 of the mean minima similarly corrected. The following were 

 the corrections applied : 



8 hours. 

 + 0.2 +0.2 +0.3 +0.2 +0.2 +0.1 1-0. .3 +0.4 +0.2 ^0.1 ^0.2 —0.1 +0.1 



Mean min. 

 + 2.8 +3.0 +2.9 +2.8 +2.fi +2.7 +2.9 +3.1 +2.9 +2.8 +2.7 +2.8 +2.8 



The mean temperature is thus derived from the mean of the 8 

 hours and mean minimum temperature corrected in this way. 

 During the five months April to August the error resulting 

 from the faulty exposure was small, averaging 0.4°. 



The years or months marked with an * after June ipo8 have been 



derived from the mean of the 8'^-i4'''-2o'^ observations 



brought to mean of day by the following minus corrections : 



0.5 0.4 0.5 0.2 0.1 0.1 0.1 0.0 0.2 0.4 0.4 0.5 0.3 



All the other months are derived from the mean of the hourly 

 thermograph records controlled by eye readings at 8'^-i4'^-2o'\ 



SOUTH ORKNEYS 



LAURIE ISLAND 

 Authority. 



Oficina Metcorologica Argentina, lluenos Aires, Argentina. 

 Pressure. 



Silc: The height of the barometer cistern above Mean Sea Level 



was 7 m. throughout the period (1903 to 1923). 

 Hours: The values given are the means of 24 hourly observa- 

 tions. 

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

 45°) '^y ^ipplying a correction of +i-0 mm. The values for 

 5 



