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 geomagnetic activity indice...
Published in: | Annales Geophysicae |
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Online Access: | https://doi.org/10.5194/angeo-27-831-2009 https://angeo.copernicus.org/articles/27/831/2009/ |
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ftcopernicus:oai:publications.copernicus.org:angeo36698 2023-05-15T13:25:14+02:00 The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes Zeller, O. Bremer, J. 2018-09-27 application/pdf https://doi.org/10.5194/angeo-27-831-2009 https://angeo.copernicus.org/articles/27/831/2009/ eng eng doi:10.5194/angeo-27-831-2009 https://angeo.copernicus.org/articles/27/831/2009/ eISSN: 1432-0576 Text 2018 ftcopernicus https://doi.org/10.5194/angeo-27-831-2009 2020-07-20T16:26:44Z 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. Text Andenes Copernicus Publications: E-Journals Annales Geophysicae 27 2 831 837 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
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. |
format |
Text |
author |
Zeller, O. Bremer, J. |
spellingShingle |
Zeller, O. Bremer, J. The influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes |
author_facet |
Zeller, O. Bremer, J. |
author_sort |
Zeller, O. |
title |
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_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_sort |
influence of geomagnetic activity on mesospheric summer echoes in middle and polar latitudes |
publishDate |
2018 |
url |
https://doi.org/10.5194/angeo-27-831-2009 https://angeo.copernicus.org/articles/27/831/2009/ |
genre |
Andenes |
genre_facet |
Andenes |
op_source |
eISSN: 1432-0576 |
op_relation |
doi:10.5194/angeo-27-831-2009 https://angeo.copernicus.org/articles/27/831/2009/ |
op_doi |
https://doi.org/10.5194/angeo-27-831-2009 |
container_title |
Annales Geophysicae |
container_volume |
27 |
container_issue |
2 |
container_start_page |
831 |
op_container_end_page |
837 |
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1766384242436079616 |