Abstract
In the present paper the authors give the results of observations of the electrical conductivity of the atmosphere at Toyohara for the period extending from August, 1932 to August, 1933, the Second Polar Year.
The conductivity was observed with the Gerd_??_en's apparatus, which was made at the workshop of the Central Meteorological Observatory, thrice a day, between 9 and 10 o'clock a. m., at no_??_n, and between 2 and 3 o'clock p. m.,
The annual variation shows maximum 1.94×10-4 Sec-1 E. S. U. in August and a minimum 0.74×10-4 Sec-1 E. S. U. in April. We can see a comparatively regular daily change from the observations, made on the First and Second International Principal days, twelve times a day. It is noticeable that in winter the conductivity has greater influence cf town than in summer. This may be the consequence of decreased conductivity due to absorption of small ions on the smoke particles. The relation between the conductivity and the wind force or the relative humidity is complicated.
