English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The present study is based on simultaneous\udmeasurements of the atmospheric electric potential gradient (PG) and Schumann\udresonances at Nagycenk station (Hungary) from 1993 to 1996. Annual and semi-annual\udvariations detected previously in the relative amplitudes of Schumann resonances\ud(SR) in the first three modes are confirmed by the extended data series applied\udhere. The regular annual variation found in the PG (with winter maximum and\udsummer minimum) is in the opposite phase, compared to that of the SR amplitudes.\udNevertheless, even the PG (being a parameter of the DC global circuit)\udoccasionally shows a distinct secondary peak in summer as indicated by the\udresults of the present analysis (and corresponding to a recent study on further\udparameters of the DC global circuit). In spite of the presumed dominance of\udlocal influence over the global one, a suitable PG parameter correlates well\udwith SR (representing the AC global circuit) on the annual time scale. It also\udbecame evident that a semi-annual variation (with spring and autumn maxima and\udwinter and summer minima) is generally present in SR. Certain signatures of a\udsemi-annual variation have also been revealed in the PG, however, the phase of\udthis semi-annual variation does not fit the pattern shown by SR (and tropical\udsurface air temperature, respectively). The representativeness of the PG data\udhas also been checked by means of a single day's diurnal variations displaying a\udphase corresponding to that of the `Carnegie Curve'. Additionally, the\udcoincidence of short-term changes (lasting some hours) both in the SR and the PG\udparameter is also demonstrated on a day disturbed by local factors. The results\udare discussed in the context of correlations between surface air temperature and\udparameters of the atmospheric electric global circuit shown by previous studies

Variations in Schumann resonances and their relation to atmospheric electric parameters at Nagycenk station