Observation of the ionosphere by ionosondes in the Southern and Northern hemispheres during geospace events in October 2021
The paper presents the results of ionospheric observations performed over the Ukrainian Antarctic Akademik Vernadsky station and Millstone Hill (USA). Ionospheric parameters such as peak electron density and height (hmF2 and NmF2) in October 2021 are shown and discussed. The results of the comparati...
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State Institution National Antarctic Scientific Center
2022
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Online Access: | https://doi.org/10.33275/1727-7485.1.2022.686 https://doaj.org/article/05600cda31294026986b453d2c7f2431 |
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ftdoajarticles:oai:doaj.org/article:05600cda31294026986b453d2c7f2431 2023-05-15T13:44:13+02:00 Observation of the ionosphere by ionosondes in the Southern and Northern hemispheres during geospace events in October 2021 M. Reznychenko O. Bogomaz D. Kotov T. Zhivolup O. Koloskov V. Lisachenko 2022-09-01T00:00:00Z https://doi.org/10.33275/1727-7485.1.2022.686 https://doaj.org/article/05600cda31294026986b453d2c7f2431 EN UK eng ukr State Institution National Antarctic Scientific Center https://doaj.org/toc/1727-7485 https://doaj.org/toc/2415-3087 doi:10.33275/1727-7485.1.2022.686 1727-7485 2415-3087 https://doaj.org/article/05600cda31294026986b453d2c7f2431 Український антарктичний журнал, Vol 20, Iss 1, Pp 18-30 (2022) electron density f2-layer peak height geomagnetic storm ionospheric model ionospheric vertical sounding Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 article 2022 ftdoajarticles https://doi.org/10.33275/1727-7485.1.2022.686 2022-12-30T19:44:39Z The paper presents the results of ionospheric observations performed over the Ukrainian Antarctic Akademik Vernadsky station and Millstone Hill (USA). Ionospheric parameters such as peak electron density and height (hmF2 and NmF2) in October 2021 are shown and discussed. The results of the comparative analysis between observations and redictions of the International Reference Ionosphere 2016 (IRI-2016) model are presented. The main objectives of this work are an investigation of the ionosphere response to space weather effects in the Northern and Southern hemispheres in the American longitudinal sector using ionosondes located at the Vernadsky station and near the magnetically conjugate region – Millstone Hill, and a comparison of observations with the model. The F2-layer peak height was calculated from ionograms obtained by ionosonde using 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 experimental results. A strong negative response of the ionosphere to the moderate geomagnetic storm on October 12, 2021 was revealed over the Vernadsky station and Millstone Hill. During October 21–31, 2021, the gradual night-to-night increase in NmF2 (by a factor of ~2) was observed over the Vernadsky station. It was found that the IRI hmF2 sub-models (SHU-2015 and AMTB-2013) provide a relatively good agreement with the observed variations of hmF2 in the daytime and nighttime for almost the entire investigated period over both the Vernadsky station and Millstone Hill. The largest deviations for both IRI hmF2 sub-models occurred during the nighttime of geomagnetically disturbed periods. The IRI NmF2 submodels (URSI and CCIR) generally agree with the observations. However, observations and model predictions differ somewhat in the geomagnetically disturbed periods. According to the results of the standard deviation calculations, it cannot be concluded that any of the IRI-2016 sub-models is better than the others. ... Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic Vernadsky Station ENVELOPE(-64.257,-64.257,-65.245,-65.245) Akademik Vernadsky Station ENVELOPE(-64.256,-64.256,-65.246,-65.246) Ukrainian Antarctic Journal 20 1(24) 18 30 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Ukrainian |
topic |
electron density f2-layer peak height geomagnetic storm ionospheric model ionospheric vertical sounding Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
electron density f2-layer peak height geomagnetic storm ionospheric model ionospheric vertical sounding Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 M. Reznychenko O. Bogomaz D. Kotov T. Zhivolup O. Koloskov V. Lisachenko Observation of the ionosphere by ionosondes in the Southern and Northern hemispheres during geospace events in October 2021 |
topic_facet |
electron density f2-layer peak height geomagnetic storm ionospheric model ionospheric vertical sounding Meteorology. Climatology QC851-999 Geophysics. Cosmic physics QC801-809 |
description |
The paper presents the results of ionospheric observations performed over the Ukrainian Antarctic Akademik Vernadsky station and Millstone Hill (USA). Ionospheric parameters such as peak electron density and height (hmF2 and NmF2) in October 2021 are shown and discussed. The results of the comparative analysis between observations and redictions of the International Reference Ionosphere 2016 (IRI-2016) model are presented. The main objectives of this work are an investigation of the ionosphere response to space weather effects in the Northern and Southern hemispheres in the American longitudinal sector using ionosondes located at the Vernadsky station and near the magnetically conjugate region – Millstone Hill, and a comparison of observations with the model. The F2-layer peak height was calculated from ionograms obtained by ionosonde using 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 experimental results. A strong negative response of the ionosphere to the moderate geomagnetic storm on October 12, 2021 was revealed over the Vernadsky station and Millstone Hill. During October 21–31, 2021, the gradual night-to-night increase in NmF2 (by a factor of ~2) was observed over the Vernadsky station. It was found that the IRI hmF2 sub-models (SHU-2015 and AMTB-2013) provide a relatively good agreement with the observed variations of hmF2 in the daytime and nighttime for almost the entire investigated period over both the Vernadsky station and Millstone Hill. The largest deviations for both IRI hmF2 sub-models occurred during the nighttime of geomagnetically disturbed periods. The IRI NmF2 submodels (URSI and CCIR) generally agree with the observations. However, observations and model predictions differ somewhat in the geomagnetically disturbed periods. According to the results of the standard deviation calculations, it cannot be concluded that any of the IRI-2016 sub-models is better than the others. ... |
format |
Article in Journal/Newspaper |
author |
M. Reznychenko O. Bogomaz D. Kotov T. Zhivolup O. Koloskov V. Lisachenko |
author_facet |
M. Reznychenko O. Bogomaz D. Kotov T. Zhivolup O. Koloskov V. Lisachenko |
author_sort |
M. Reznychenko |
title |
Observation of the ionosphere by ionosondes in the Southern and Northern hemispheres during geospace events in October 2021 |
title_short |
Observation of the ionosphere by ionosondes in the Southern and Northern hemispheres during geospace events in October 2021 |
title_full |
Observation of the ionosphere by ionosondes in the Southern and Northern hemispheres during geospace events in October 2021 |
title_fullStr |
Observation of the ionosphere by ionosondes in the Southern and Northern hemispheres during geospace events in October 2021 |
title_full_unstemmed |
Observation of the ionosphere by ionosondes in the Southern and Northern hemispheres during geospace events in October 2021 |
title_sort |
observation of the ionosphere by ionosondes in the southern and northern hemispheres during geospace events in october 2021 |
publisher |
State Institution National Antarctic Scientific Center |
publishDate |
2022 |
url |
https://doi.org/10.33275/1727-7485.1.2022.686 https://doaj.org/article/05600cda31294026986b453d2c7f2431 |
long_lat |
ENVELOPE(-64.257,-64.257,-65.245,-65.245) ENVELOPE(-64.256,-64.256,-65.246,-65.246) |
geographic |
Antarctic Vernadsky Station Akademik Vernadsky Station |
geographic_facet |
Antarctic Vernadsky Station Akademik Vernadsky Station |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Український антарктичний журнал, Vol 20, Iss 1, Pp 18-30 (2022) |
op_relation |
https://doaj.org/toc/1727-7485 https://doaj.org/toc/2415-3087 doi:10.33275/1727-7485.1.2022.686 1727-7485 2415-3087 https://doaj.org/article/05600cda31294026986b453d2c7f2431 |
op_doi |
https://doi.org/10.33275/1727-7485.1.2022.686 |
container_title |
Ukrainian Antarctic Journal |
container_volume |
20 |
container_issue |
1(24) |
container_start_page |
18 |
op_container_end_page |
30 |
_version_ |
1766198956298076160 |