Variation of Omega at Two Land Stations

Abstract

The coefficient Omega, Ω, defined as the ratio of measured air-earth current density to the calculated current density has been calculated from the hourly means of one year data for 1969 for Toronto, Canada, and Dourbes, Belgium. In order to study its variation, another coefficient, Ω %, has been defined as Ω % = (Ω/Ω) × 100. The hourly variations for the whole year, and separately for each month, and the mean monthly variation were calculated and the results for fair weather and all weather were compared. The hourly variations for a few fair-weather days were also studied. In general, larger values of Ω and Ω% were observed for Toronto as compared to Dourbes. The Toronto large values of Ω were attributed to the placement of the air-earth current density antenna. No similarity in Ω % variation was observed. For Toronto, some evidence of lower Ω % in morning and higher in the afternoon was indicated. No definite relationship could be established between Ω % and the local electrical and meteorological variations at Toronto. The annual hourly variations for both stations indicated slightly lower values of Q in fair weather but the all-weather Toronto curve showed large fluctuations.KeywordsPotential GradientMonthly VariationFair WeatherAtmospheric ElectricityHourly VariationThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.