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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ftdoajarticles:oai:doaj.org/article:498cbab0001a41adaed4afb7ad07cd5e 2023-05-15T16:04:31+02:00 On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar J. Moen X. C. Qiu H. C. Carlson R. Fujii I. W. McCrea 2008-08-01T00:00:00Z https://doi.org/10.5194/angeo-26-2427-2008 https://doaj.org/article/498cbab0001a41adaed4afb7ad07cd5e EN eng Copernicus Publications https://www.ann-geophys.net/26/2427/2008/angeo-26-2427-2008.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-26-2427-2008 0992-7689 1432-0576 https://doaj.org/article/498cbab0001a41adaed4afb7ad07cd5e Annales Geophysicae, Vol 26, Pp 2427-2433 (2008) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2008 ftdoajarticles https://doi.org/10.5194/angeo-26-2427-2008 2022-12-31T14:14:12Z 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. Article in Journal/Newspaper EISCAT Svalbard Directory of Open Access Journals: DOAJ Articles Svalbard Annales Geophysicae 26 8 2427 2433 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 J. Moen X. C. Qiu H. C. Carlson R. Fujii I. W. McCrea On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
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 |
Article in Journal/Newspaper |
author |
J. Moen X. C. Qiu H. C. Carlson R. Fujii I. W. McCrea |
author_facet |
J. Moen X. C. Qiu H. C. Carlson R. Fujii I. W. McCrea |
author_sort |
J. Moen |
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 |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doi.org/10.5194/angeo-26-2427-2008 https://doaj.org/article/498cbab0001a41adaed4afb7ad07cd5e |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_source |
Annales Geophysicae, Vol 26, Pp 2427-2433 (2008) |
op_relation |
https://www.ann-geophys.net/26/2427/2008/angeo-26-2427-2008.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-26-2427-2008 0992-7689 1432-0576 https://doaj.org/article/498cbab0001a41adaed4afb7ad07cd5e |
op_doi |
https://doi.org/10.5194/angeo-26-2427-2008 |
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Annales Geophysicae |
container_volume |
26 |
container_issue |
8 |
container_start_page |
2427 |
op_container_end_page |
2433 |
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1766400098850308096 |