NDLI: Study on atmospheric electric parameters considering condensation nuclei and local meteorological factors

Content Provider	Springer Nature Link
Author	Märcz, F.
Copyright Year	2003
Abstract	Evening data of two atmospheric electric parameters (positive air conductivity and potential gradient) measured at Świder (Poland) between 1965 and 1995 have been investigated around days with low number of condensation nuclei (NCN). Based on the measure of the NCN decrease, two groups of days were distinguished, (days with moderate decrease: from −30 % to −50 % and days with strong decrease: below −50 %, as related to the corresponding monthly average of the NCN). These days have been applied as key days for two independent superposed epoch analyses.Air conductivity significantly increased both on days with moderate and strong NCN decreases. For the strong events the conductivity increase was about the double of that found for the moderate ones. In accordance with Ohm’s Law, the potential gradient showed its lowest value (in relation to the corresponding monthly average) on these key days. The response of this atmospheric electric parameter is also significant, however, it is less impressive than in the case of air conductivity.For checking the influence of meteorological changes on atmospheric electric parameters, the departures of air conductivity and potential gradient from corresponding monthly average have been tabulated according to the observed wind speed and wind direction, both for moderate and strong NCN events. Air conductivity generally showed a distinct increase with increasing wind speed in the case of both kinds of NCN events. A dependence on wind direction was also found. The potential gradient responded in a proper sense to wind changes, even if the responses were less convincing than those of air conductivity.
Starting Page	9
Ending Page	19
Page Count	11
File Format	PDF
ISSN	12178977
Journal	Acta Geodaetica et Geophysica Hungarica
Volume Number	38
Issue Number	1
e-ISSN	15871037
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-02-27
Publisher Institution	Quarterly of the Hungarian Academy of Sciences
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	air conductivity number of condensation nuclei Geophysics/Geodesy atmospheric electric potential gradient meteorological parameters
Content Type	Text
Resource Type	Article
Subject	Building and Construction Geology Geophysics

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