Investigation of the Ionosphere over Antarctica Under Quiet Space Weather Conditions: Results of Vertical Sounding of the Ionosphere September 14–24, 2020
We present observational results of variations in the ionospheric parameters hmF2 and NmF2 over the Ukrainian Antarctic station “Akademik Vernadsky” for magnetically quiet conditions. The results of comparative analysis of observational data and the International Reference Ionosphere-2016 model pred...
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ftdoajarticles:oai:doaj.org/article:f08b7d8e18234b1fa8d3e323633bb61e 2023-05-15T13:33:03+02:00 Investigation of the Ionosphere over Antarctica Under Quiet Space Weather Conditions: Results of Vertical Sounding of the Ionosphere September 14–24, 2020 Maryna Shulha Oleksandr Bogomaz Dmytro Kotov Taras Zhivolup Oleksander Koloskov Andrey Zalizovski Volodymyr Lisachenko 2020-12-01T00:00:00Z https://doi.org/10.47774/phag.01.01.2020-4 https://doaj.org/article/f08b7d8e18234b1fa8d3e323633bb61e EN UK eng ukr Institute of Ionosphere https://www.phag.org.ua/index.php/phag/article/view/8/11 https://doaj.org/toc/2708-5244 https://doaj.org/toc/2710-1940 https://doi.org/10.47774/phag.01.01.2020-4 2708-5244 2710-1940 https://doaj.org/article/f08b7d8e18234b1fa8d3e323633bb61e Фізика атмосфери та геокосмосу, Vol 1, Iss 1, Pp 45-55 (2020) electron density f2 layer peak height ionosonde quiet space weather models of the ionosphere downward plasma flux Geophysics. Cosmic physics QC801-809 Geomagnetism QC811-849 General QC1-75 article 2020 ftdoajarticles https://doi.org/10.47774/phag.01.01.2020-4 2022-12-31T07:30:01Z We present observational results of variations in the ionospheric parameters hmF2 and NmF2 over the Ukrainian Antarctic station “Akademik Vernadsky” for magnetically quiet conditions. The results of comparative analysis of observational data and the International Reference Ionosphere-2016 model predictions are presented. The main objective of this study is to investigate the temporal variations of two key ionospheric parameters – the F2 layer peak height and electron density – during very quiet space weather conditions using data of vertical sounding of the ionosphere obtained over the Ukrainian Antarctic station “Akademik Vernadsky” and comparison the observation results with model values. Methods: The temporal variations of the F2 layer peak height and electron density were calculated from ionograms obtained with ionosonde installed at the Ukrainian Antarctic station “Akademik Vernadsky” with subsequent electron density profile inversion. Diurnal variations of hmF2 and NmF2 were calculated using a set of sub-models of the IRI-2016 model for comparison with results of observational studies. Results: We found that for the Antarctic region option of IRI-2016 model for the F2 layer peak height SHU-2015 provides a better fit for hmF2 through the investigated period compare to the AMTB-2013 model predictions. Electron density models (URSI, CCIR) generally well reproduce the observed variations of NmF2 during periods of absence non-standard manifestations of space weather, which are possible for quiet conditions too. Hypotheses regarding the possible reasons for experimental and model differences in variations of NmF2 are discussed. The analysis of effect of geomagnetic storm on September 24, 2020 on NmF2 variations was carried out. Conclusions: The obtained results demonstrate peculiarities of the state of the ionosphere-plasmasphere system over Antarctica under very quiet space weather conditions and provide evaluation of predictive capabilities of modern international reference ionosphere models. New knowledge ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic PHYSICS OF ATMOSPHERE AND GEOSPACE 1 1 45 55 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Ukrainian |
topic |
electron density f2 layer peak height ionosonde quiet space weather models of the ionosphere downward plasma flux Geophysics. Cosmic physics QC801-809 Geomagnetism QC811-849 General QC1-75 |
spellingShingle |
electron density f2 layer peak height ionosonde quiet space weather models of the ionosphere downward plasma flux Geophysics. Cosmic physics QC801-809 Geomagnetism QC811-849 General QC1-75 Maryna Shulha Oleksandr Bogomaz Dmytro Kotov Taras Zhivolup Oleksander Koloskov Andrey Zalizovski Volodymyr Lisachenko Investigation of the Ionosphere over Antarctica Under Quiet Space Weather Conditions: Results of Vertical Sounding of the Ionosphere September 14–24, 2020 |
topic_facet |
electron density f2 layer peak height ionosonde quiet space weather models of the ionosphere downward plasma flux Geophysics. Cosmic physics QC801-809 Geomagnetism QC811-849 General QC1-75 |
description |
We present observational results of variations in the ionospheric parameters hmF2 and NmF2 over the Ukrainian Antarctic station “Akademik Vernadsky” for magnetically quiet conditions. The results of comparative analysis of observational data and the International Reference Ionosphere-2016 model predictions are presented. The main objective of this study is to investigate the temporal variations of two key ionospheric parameters – the F2 layer peak height and electron density – during very quiet space weather conditions using data of vertical sounding of the ionosphere obtained over the Ukrainian Antarctic station “Akademik Vernadsky” and comparison the observation results with model values. Methods: The temporal variations of the F2 layer peak height and electron density were calculated from ionograms obtained with ionosonde installed at the Ukrainian Antarctic station “Akademik Vernadsky” with subsequent electron density profile inversion. Diurnal variations of hmF2 and NmF2 were calculated using a set of sub-models of the IRI-2016 model for comparison with results of observational studies. Results: We found that for the Antarctic region option of IRI-2016 model for the F2 layer peak height SHU-2015 provides a better fit for hmF2 through the investigated period compare to the AMTB-2013 model predictions. Electron density models (URSI, CCIR) generally well reproduce the observed variations of NmF2 during periods of absence non-standard manifestations of space weather, which are possible for quiet conditions too. Hypotheses regarding the possible reasons for experimental and model differences in variations of NmF2 are discussed. The analysis of effect of geomagnetic storm on September 24, 2020 on NmF2 variations was carried out. Conclusions: The obtained results demonstrate peculiarities of the state of the ionosphere-plasmasphere system over Antarctica under very quiet space weather conditions and provide evaluation of predictive capabilities of modern international reference ionosphere models. New knowledge ... |
format |
Article in Journal/Newspaper |
author |
Maryna Shulha Oleksandr Bogomaz Dmytro Kotov Taras Zhivolup Oleksander Koloskov Andrey Zalizovski Volodymyr Lisachenko |
author_facet |
Maryna Shulha Oleksandr Bogomaz Dmytro Kotov Taras Zhivolup Oleksander Koloskov Andrey Zalizovski Volodymyr Lisachenko |
author_sort |
Maryna Shulha |
title |
Investigation of the Ionosphere over Antarctica Under Quiet Space Weather Conditions: Results of Vertical Sounding of the Ionosphere September 14–24, 2020 |
title_short |
Investigation of the Ionosphere over Antarctica Under Quiet Space Weather Conditions: Results of Vertical Sounding of the Ionosphere September 14–24, 2020 |
title_full |
Investigation of the Ionosphere over Antarctica Under Quiet Space Weather Conditions: Results of Vertical Sounding of the Ionosphere September 14–24, 2020 |
title_fullStr |
Investigation of the Ionosphere over Antarctica Under Quiet Space Weather Conditions: Results of Vertical Sounding of the Ionosphere September 14–24, 2020 |
title_full_unstemmed |
Investigation of the Ionosphere over Antarctica Under Quiet Space Weather Conditions: Results of Vertical Sounding of the Ionosphere September 14–24, 2020 |
title_sort |
investigation of the ionosphere over antarctica under quiet space weather conditions: results of vertical sounding of the ionosphere september 14–24, 2020 |
publisher |
Institute of Ionosphere |
publishDate |
2020 |
url |
https://doi.org/10.47774/phag.01.01.2020-4 https://doaj.org/article/f08b7d8e18234b1fa8d3e323633bb61e |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Фізика атмосфери та геокосмосу, Vol 1, Iss 1, Pp 45-55 (2020) |
op_relation |
https://www.phag.org.ua/index.php/phag/article/view/8/11 https://doaj.org/toc/2708-5244 https://doaj.org/toc/2710-1940 https://doi.org/10.47774/phag.01.01.2020-4 2708-5244 2710-1940 https://doaj.org/article/f08b7d8e18234b1fa8d3e323633bb61e |
op_doi |
https://doi.org/10.47774/phag.01.01.2020-4 |
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PHYSICS OF ATMOSPHERE AND GEOSPACE |
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55 |
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