Thermospheric parameters contribution to the formation of Yakutsk F2-layer diurnal summer time anomaly
Abstract The role of thermospheric neutral composition in the formation of the Yakutsk diurnal summer time foF2 anomaly is analyzed. Ionospheric stations inside and outside the anomaly area are considered. The effect of neutral composition in foF2 is the most noticeable around noontime hours. The di...
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ftdoajarticles:oai:doaj.org/article:6c27ce6abf504538b173173409b2ef17 2023-05-15T18:45:24+02:00 Thermospheric parameters contribution to the formation of Yakutsk F2-layer diurnal summer time anomaly Andrey V. Mikhailov Loredana Perrone 2022-08-01T00:00:00Z https://doi.org/10.1038/s41598-022-17691-1 https://doaj.org/article/6c27ce6abf504538b173173409b2ef17 EN eng Nature Portfolio https://doi.org/10.1038/s41598-022-17691-1 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-022-17691-1 2045-2322 https://doaj.org/article/6c27ce6abf504538b173173409b2ef17 Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022) Medicine R Science Q article 2022 ftdoajarticles https://doi.org/10.1038/s41598-022-17691-1 2022-12-30T20:40:25Z Abstract The role of thermospheric neutral composition in the formation of the Yakutsk diurnal summer time foF2 anomaly is analyzed. Ionospheric stations inside and outside the anomaly area are considered. The effect of neutral composition in foF2 is the most noticeable around noontime hours. The difference between observed noontime foF2 in two areas is significant at the 99.9% confidence level both for monthly median and individual days. The inferred from ionosonde observations and Swarm neutral gas density thermospheric parameters indicate a significant difference between two areas. The inferred exospheric temperature, Tex at Magadan (inside the anomaly area) is significantly larger than Tex at Tunguska (outside the anomaly area). On the contrary, the inferred atomic oxygen [O] at Tunguska is significantly larger than at Magadan. Different [O] abundance in the two areas is the main reason of the observed difference in noontime foF2 values. Vertical plasma drift depending on magnetic declination, D is the only process responsible for the difference between nighttime foF2 at Tunguska and Magadan. A possible mechanism of the revealed difference in thermospheric parameters inside and outside the anomaly area is discussed. Article in Journal/Newspaper Yakutsk Directory of Open Access Journals: DOAJ Articles Yakutsk Magadan ENVELOPE(150.803,150.803,59.564,59.564) Tunguska ENVELOPE(144.784,144.784,59.388,59.388) Scientific Reports 12 1 |
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English |
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Medicine R Science Q |
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Medicine R Science Q Andrey V. Mikhailov Loredana Perrone Thermospheric parameters contribution to the formation of Yakutsk F2-layer diurnal summer time anomaly |
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Medicine R Science Q |
description |
Abstract The role of thermospheric neutral composition in the formation of the Yakutsk diurnal summer time foF2 anomaly is analyzed. Ionospheric stations inside and outside the anomaly area are considered. The effect of neutral composition in foF2 is the most noticeable around noontime hours. The difference between observed noontime foF2 in two areas is significant at the 99.9% confidence level both for monthly median and individual days. The inferred from ionosonde observations and Swarm neutral gas density thermospheric parameters indicate a significant difference between two areas. The inferred exospheric temperature, Tex at Magadan (inside the anomaly area) is significantly larger than Tex at Tunguska (outside the anomaly area). On the contrary, the inferred atomic oxygen [O] at Tunguska is significantly larger than at Magadan. Different [O] abundance in the two areas is the main reason of the observed difference in noontime foF2 values. Vertical plasma drift depending on magnetic declination, D is the only process responsible for the difference between nighttime foF2 at Tunguska and Magadan. A possible mechanism of the revealed difference in thermospheric parameters inside and outside the anomaly area is discussed. |
format |
Article in Journal/Newspaper |
author |
Andrey V. Mikhailov Loredana Perrone |
author_facet |
Andrey V. Mikhailov Loredana Perrone |
author_sort |
Andrey V. Mikhailov |
title |
Thermospheric parameters contribution to the formation of Yakutsk F2-layer diurnal summer time anomaly |
title_short |
Thermospheric parameters contribution to the formation of Yakutsk F2-layer diurnal summer time anomaly |
title_full |
Thermospheric parameters contribution to the formation of Yakutsk F2-layer diurnal summer time anomaly |
title_fullStr |
Thermospheric parameters contribution to the formation of Yakutsk F2-layer diurnal summer time anomaly |
title_full_unstemmed |
Thermospheric parameters contribution to the formation of Yakutsk F2-layer diurnal summer time anomaly |
title_sort |
thermospheric parameters contribution to the formation of yakutsk f2-layer diurnal summer time anomaly |
publisher |
Nature Portfolio |
publishDate |
2022 |
url |
https://doi.org/10.1038/s41598-022-17691-1 https://doaj.org/article/6c27ce6abf504538b173173409b2ef17 |
long_lat |
ENVELOPE(150.803,150.803,59.564,59.564) ENVELOPE(144.784,144.784,59.388,59.388) |
geographic |
Yakutsk Magadan Tunguska |
geographic_facet |
Yakutsk Magadan Tunguska |
genre |
Yakutsk |
genre_facet |
Yakutsk |
op_source |
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022) |
op_relation |
https://doi.org/10.1038/s41598-022-17691-1 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-022-17691-1 2045-2322 https://doaj.org/article/6c27ce6abf504538b173173409b2ef17 |
op_doi |
https://doi.org/10.1038/s41598-022-17691-1 |
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Scientific Reports |
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12 |
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1766236447660048384 |