Links between atmospheric electricity and ionospheric absorption due to extraterrestrial influences

Märcz, F.

doi:10.1029/ja081i025p04566

Cited by 23 publications

(6 citation statements)

References 6 publications

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“…These perturbations generate polar cap potential differences, which can cause surface PG variations of ±20% (Roble and Tzur 1986). The ionospheric/magnetospheric generator is thought only to affect the global circuit appreciably at high latitudes, although weak geomagnetic influences have been detected at lower latitudes (Märcz 1976;Harrison and Märcz 2007). Another process driving current around the global circuit is precipitation (commonly called "rain") from electrified clouds (Wilson 1921;Williams and Heckman 1993).…”

Section: Properties Of the Global Electric Circuitmentioning

confidence: 98%

Investigating Earth’s Atmospheric Electricity: a Role Model for Planetary Studies

2008

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The historical development of terrestrial atmospheric electricity is described, from its beginnings with the first observations of the potential gradient to the global electric circuit model proposed by C.T.R. Wilson in the early 20th century. The properties of the terrestrial global circuit are summarised. Concepts originally needed to develop the idea of a global circuit are identified as "central tenets", for example, the importance of radio science in establishing the conducting upper layer. The central tenets are distinguished from additional findings that merely corroborate, or are explained by, the global circuit model. Using this analysis it is possible to specify which observations are preferable for detecting global circuits in extraterrestrial atmospheres. Schumann resonances, the extremely low frequency signals generated by excitation of the surface-ionosphere cavity by electrical discharges, are identified as the most useful single measurement of electrical activity in a planetary atmosphere.

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Section: Properties Of the Global Electric Circuitmentioning

confidence: 98%

Investigating Earth’s Atmospheric Electricity: a Role Model for Planetary Studies

2008

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“…These perturbations generate polar cap potential differences, which can cause surface PG variations of ±20% (Roble and Tzur 1986). The ionospheric/magnetospheric generator is thought only to affect the global circuit appreciably at high latitudes, although weak geomagnetic influences have been detected at lower latitudes (Märcz, 1976;Harrison and Märcz 2007). Another process driving current around the global circuit is precipitation (commonly called "rain") from electrified clouds (Wilson 1921, Williams andHeckman 1993).…”

Section: [Insert Figure 1]mentioning

confidence: 99%

Investigating Earth’s Atmospheric Electricity: a Role Model for Planetary Studies

Aplin

Harrison

Rycroft

2008

Space Sciences Series of ISSI

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The historical development of terrestrial atmospheric electricity is described, from its beginnings with the first observations of the potential gradient to the global electric circuit model proposed by C.T.R. Wilson in the early 20 th century. The properties of the terrestrial global circuit are summarised. Concepts originally needed to develop the idea of a global circuit are identified as "central tenets", for example, the importance of radio science in establishing the conducting upper layer. The central tenets are distinguished from additional findings that merely corroborate, or are explained by, the global circuit model. Using this analysis it is possible to specify which observations are preferable for detecting global circuits in extraterrestrial atmospheres. Schumann resonances, the extremely low frequency signals generated by excitation of the surface-ionosphere cavity by electrical discharges, are identified as the most useful single measurement of electrical activity in a planetary atmosphere. Keywords 92.60.Pw Atmospheric electricity, lightning 01.65.+g History of science 96.30.Bc Comparative planetology 96.15.Hy Planetary atmospheres

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“…Consequently, the Nagycenk PG data obtained in the early morning and around the dawn hours seems to show a global signature, despite the possible presence of local influences. Märcz (1976) succeeded in revealing a relation between surface PG and events appearing in ionospheric absorption following selected geomagnetic disturbances. The relation was confirmed on the basis of PG data selected from different intervals of the day, however, it was at its most significant when using the measurements around dawn.…”

Section: Global Data Representativeness and Short-term Pg Variationsmentioning

confidence: 99%

Long-term changes in atmospheric electrical parameters observed at Nagycenk (Hungary) and the UK observatories at Eskdalemuir and Kew

Märcz

Harrison

2003

Ann. Geophys.

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Abstract. The Nagycenk Geophysical Observatory in Hungary (47 • 38 N, 16 • 43 E) has made continuous measurements of the vertical atmospheric electric Potential Gradient (PG) since 1962. Global signals have previously been identified in the Nagycenk PG data. A long-term decrease has been discovered in the PG measured at the Eskdalemuir Observatory, Scotland (55 • 19 N, 3 • 12 W), suggesting that this represents a global change in the atmospheric electricity related to a decline in cosmic rays. A 40% decline in PG is shown here to have occurred at Nagycenk between 1962 and 2001, also consistent with changes in the air-Earth current measured at Kew (51 • 28 N, 0 • 19 W), London, 1966London, -1978 Comparison of the long-term PG measurements at both Eskdalemuir and Nagycenk gives further evidence to support the hypothesis of a global atmospheric electrical decline from the early twentieth century to the present time, as it is shown that local effects at Nagycenk are unlikely to have dominated the changes there.

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Links between atmospheric electricity and ionospheric absorption due to extraterrestrial influences

Cited by 23 publications

References 6 publications

Investigating Earth’s Atmospheric Electricity: a Role Model for Planetary Studies

Investigating Earth’s Atmospheric Electricity: a Role Model for Planetary Studies

Investigating Earth’s Atmospheric Electricity: a Role Model for Planetary Studies

Long-term changes in atmospheric electrical parameters observed at Nagycenk (Hungary) and the UK observatories at Eskdalemuir and Kew

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