On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar
Two long runs of EISCAT Svalbard Radar (ESR), in February 2001 and October 2002, have been analysed with respect to variability in the F2 region peak density and altitude. The diurnal variation in the F2 peak density exhibits one maximum around 12:00 MLT and another around 23:00 MLT, consistent with...
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Online Access: | https://doi.org/10.5194/angeo-26-2427-2008 https://angeo.copernicus.org/articles/26/2427/2008/ |
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ftcopernicus:oai:publications.copernicus.org:angeo36500 2023-05-15T16:04:29+02:00 On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar Moen, J. Qiu, X. C. Carlson, H. C. Fujii, R. McCrea, I. W. 2018-09-27 application/pdf https://doi.org/10.5194/angeo-26-2427-2008 https://angeo.copernicus.org/articles/26/2427/2008/ eng eng doi:10.5194/angeo-26-2427-2008 https://angeo.copernicus.org/articles/26/2427/2008/ eISSN: 1432-0576 Text 2018 ftcopernicus https://doi.org/10.5194/angeo-26-2427-2008 2020-07-20T16:26:51Z Two long runs of EISCAT Svalbard Radar (ESR), in February 2001 and October 2002, have been analysed with respect to variability in the F2 region peak density and altitude. The diurnal variation in the F2 peak density exhibits one maximum around 12:00 MLT and another around 23:00 MLT, consistent with solar wind controlled transport of EUV ionized plasma across the polar cap from day to night. High density plasma patch material is drawn in through the cusp inflow region independent of IMF B Y . There is no apparent IMF B Y asymmetry on the intake of high density plasma, but the trajectory of its motion is strongly B Y dependent. Comparison with the international reference ionosphere model (IRI2001) clearly demonstrates that the model does not take account of the cross-polar transport of F2-region plasma, and hence has limited applicability in polar cap regions. Text EISCAT Svalbard Copernicus Publications: E-Journals Svalbard Annales Geophysicae 26 8 2427 2433 |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Two long runs of EISCAT Svalbard Radar (ESR), in February 2001 and October 2002, have been analysed with respect to variability in the F2 region peak density and altitude. The diurnal variation in the F2 peak density exhibits one maximum around 12:00 MLT and another around 23:00 MLT, consistent with solar wind controlled transport of EUV ionized plasma across the polar cap from day to night. High density plasma patch material is drawn in through the cusp inflow region independent of IMF B Y . There is no apparent IMF B Y asymmetry on the intake of high density plasma, but the trajectory of its motion is strongly B Y dependent. Comparison with the international reference ionosphere model (IRI2001) clearly demonstrates that the model does not take account of the cross-polar transport of F2-region plasma, and hence has limited applicability in polar cap regions. |
format |
Text |
author |
Moen, J. Qiu, X. C. Carlson, H. C. Fujii, R. McCrea, I. W. |
spellingShingle |
Moen, J. Qiu, X. C. Carlson, H. C. Fujii, R. McCrea, I. W. On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar |
author_facet |
Moen, J. Qiu, X. C. Carlson, H. C. Fujii, R. McCrea, I. W. |
author_sort |
Moen, J. |
title |
On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar |
title_short |
On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar |
title_full |
On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar |
title_fullStr |
On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar |
title_full_unstemmed |
On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar |
title_sort |
on the diurnal variability in f2-region plasma density above the eiscat svalbard radar |
publishDate |
2018 |
url |
https://doi.org/10.5194/angeo-26-2427-2008 https://angeo.copernicus.org/articles/26/2427/2008/ |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_source |
eISSN: 1432-0576 |
op_relation |
doi:10.5194/angeo-26-2427-2008 https://angeo.copernicus.org/articles/26/2427/2008/ |
op_doi |
https://doi.org/10.5194/angeo-26-2427-2008 |
container_title |
Annales Geophysicae |
container_volume |
26 |
container_issue |
8 |
container_start_page |
2427 |
op_container_end_page |
2433 |
_version_ |
1766400075771150336 |