Atmospheric-Electric Observations, 1915-16 

 Daily Summary of Atmospheric-Electric and Meteorological Observations 



(Form 110) 



Station: At sea 

 Date: Jan. 15, 1916 

 Vessel: Carnegie 



Weallier: o 

 Course: E ^ S 

 Sea: R 



Lat: 54?3 S Long: 326?8 E 



Com'd'r: J. P. A. Obs'rs: H.F.J, and I A L 

 Wind: W by S, 6 Roll or Heel: 10° s. 10° p ' 



Summaiy of Atmospheric-Electric Observations' 



Local 

 Mean 

 Time 



h m 

 10 42 



Ions per c. c. 



Positive 



n+ 



926 



Negative 



839 



Conductivitv 



Positive 



E. S. U. 



1 .72X!0-< 



Negative 



E. s. n. 

 1.47X10-* 



Specific Velocity 



Positive 



1.32 



Negative 



1.25 



n+/n - 1 10 Potential-gradient A' = -M23 volt /meter 



A+-t-A_ = 3.19X10"' E. a. u. 



Air-earth current-density = -(?gi^^ =1 .31X10-« E. s. u. 



^0 = value of t; corresponding to time 3 minutes after completion of deposit^ =0 80 



K- number of pairs of ions produced per c. c. per sec =4 22 



Remarks: 



Meteorological Summary 



Local 

 Mean 

 Time 



h m 

 11 09 



Thermometer readings 



\^'et 

 bulb 



3.0 



Dry 

 bulb 



4.0 



Differ- 

 ence 



10 



Relative 

 Humid- 

 ity 



per ctnl 

 85 



Mean 



Pre-isure 



Barom. 



mm. 

 740.1 

 741.2 

 739 4 

 740.3 



740.2 



Att. 



Therm. 



C. 



10.1 



Remarks 



Cloud.= :Cu-N, 10 



401 



are obtained on the basis of 3 sets of observations. In the example on page 398, however, onlv one set is shown 

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