An interpretation of the ƒoF2 and hmF2 long-term trends in the framework of the geomagnetic control concept [PDF]
Annales Geophysicae, 2001 Earlier revealed morphological features of the foF2 and hmF2 long-term trends are interpreted in the scope of the geomagnetic control concept based on the contemporary F2-layer storm mechanisms.
A. V. Mikhailov, D. Marin
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Local impact of solar variation on NO2 in the lower mesosphere and upper stratosphere from 2007 to 2012 [PDF]
Atmospheric Chemistry and Physics, 2014 MIPAS/ENVISAT data of nighttime NO2 volume mixing ratios (VMR) from 2007 until 2012 between 40 km and 62 km altitude are compared with the geomagnetic Ap index and solar Lyman-α radiation.
F. Friederich +4 more
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Statistical study and corresponding evolution of plasmaspheric plumes under different levels of geomagnetic storms [PDF]
Annales Geophysicae, 2022 Using observations of Van Allen Probes, we present a statistical study of plasmaspheric plumes in the inner magnetosphere. Plasmaspheric plumes tend to occur during the recovery phase of geomagnetic storms.
H. Li +7 more
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The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes [PDF]
Annales Geophysicae, 2009 The dependence of mesospheric VHF radar echoes during summer months on geomagnetic activity has been investigated with observation data of the OSWIN radar in Kühlungsborn (54° N) and of the ALWIN radar in Andenes (69° N).
O. Zeller, O. Zeller, J. Bremer
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Circulation changes in the winter lower atmosphere and long-lasting solar/geomagnetic activity [PDF]
Annales Geophysicae, 2012 The paper describes the association between high long-lasting solar/geomagnetic activity and geopotential height (GPH) changes in the winter lower atmosphere, based on their development in the Northern Hemisphere in the winter periods (December–March)
J. Bochníček +5 more
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Relation of Extreme Ionospheric Events with Geomagnetic and Meteorological Activity
Atmosphere, 2022 This paper studies extreme ionospheric events and their relations with geomagnetic and meteorological activity. With the long observation series at the Irkutsk (52° N, 104° E) and Kaliningrad (54° N, 20° E) ionosondes we obtained the datasets of ...
Konstantin G. Ratovsky +3 more
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Geomagnetic effects caused by rocket exhaust jets
Solar-Terrestrial Physics, 2016 In the space experiment Radar–Progress, we have made 33 series of measurements of geomagnetic variations during ignitions of engines of Progress cargo spacecraft in low Earth orbit.
Lipko Yu.V. +3 more
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Dependence of Quiet Time Geomagnetic Activity Seasonal Variation on the Solar Magnetic Polarity [PDF]
Journal of Astronomy and Space Sciences, 2013 The geomagnetic activity shows the semiannual variation stronger in vernal and autumnal equinoxes than in summer and winter solstices. The semiannual variation has been explained by three main hypotheses such as Axial hypothesis, Equinoctial hypothesis ...
Suyeon Oh
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Geomagnetic disturbances analysis using discrete wavelets [PDF]
Geofísica Internacional, 2008 To assess long-term trends and periodicities in geomagnetic storms, the discrete wavelet transform, using the Daubechies function, was applied. Among a variety of techniques, which are available for analyzing variability, wavelet analysis has emerged in ...
E. M. Zotto +2 more
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Ionospheric F2-Layer Semi-Annual Variation in Middle Latitude by Solar Activity [PDF]
Journal of Astronomy and Space Sciences, 2010 We examine the ionospheric F2-layer electron density variation by solar activity in middle latitude by using foF2 observed at the Kokubunji ionosonde station in Japan for the period from 1997 to 2008.
Yoon-Kyung Park +4 more
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