The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes
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). Using daily mean values of VHF radar echoes and of geomagn...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2009-02-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/27/831/2009/angeo-27-831-2009.pdf |
| _version_ | 1811262271091900416 |
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| author | O. Zeller O. Zeller J. Bremer |
| author_facet | O. Zeller O. Zeller J. Bremer |
| author_sort | O. Zeller |
| collection | DOAJ |
| description | 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). Using daily mean values of VHF radar echoes and
of geomagnetic activity indices in superimposed epoch analyses, the
comparison of both data sets shows in general stronger radar echoes on the
day of the maximum geomagnetic activity, the maximum value one day after the
geomagnetic disturbance, and enhanced radar echoes also on the following 2–3
days. This phenomenon is observed at middle and polar latitudes and can be
explained by precipitating particle fluxes during the ionospheric post storm
effect. At polar latitudes, the radar echoes decrease however during and one
day after very strong geomagnetic disturbances. The possible reason of this
surprising effect is discussed. |
| first_indexed | 2024-04-12T19:21:07Z |
| format | Article |
| id | doaj.art-fc62280ba4024e5b99396e62afdae3e7 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-04-12T19:21:07Z |
| publishDate | 2009-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-fc62280ba4024e5b99396e62afdae3e72022-12-22T03:19:35ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762009-02-012783183710.5194/angeo-27-831-2009The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudesO. Zeller0O. Zeller1J. Bremer2Leibniz-Institute of Atmospheric Physics, 18225 Kühlungsborn, Schloss-Str. 6, GermanyDepartment of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UKLeibniz-Institute of Atmospheric Physics, 18225 Kühlungsborn, Schloss-Str. 6, GermanyThe 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). Using daily mean values of VHF radar echoes and of geomagnetic activity indices in superimposed epoch analyses, the comparison of both data sets shows in general stronger radar echoes on the day of the maximum geomagnetic activity, the maximum value one day after the geomagnetic disturbance, and enhanced radar echoes also on the following 2–3 days. This phenomenon is observed at middle and polar latitudes and can be explained by precipitating particle fluxes during the ionospheric post storm effect. At polar latitudes, the radar echoes decrease however during and one day after very strong geomagnetic disturbances. The possible reason of this surprising effect is discussed.https://www.ann-geophys.net/27/831/2009/angeo-27-831-2009.pdf |
| spellingShingle | O. Zeller O. Zeller J. Bremer The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes Annales Geophysicae |
| title | The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes |
| title_full | The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes |
| title_fullStr | The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes |
| title_full_unstemmed | The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes |
| title_short | The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes |
| title_sort | influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes |
| url | https://www.ann-geophys.net/27/831/2009/angeo-27-831-2009.pdf |
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