On the determination of ionospheric electron density profiles using multi-frequency riometry
Funding Information: Acknowledgements. The authors wish to thank Andreas Kvammen, Theresa Rexer and Björn Gustavsson for their useful discussions. The authors also thank the reviewers for their positive responses and constructive criticism. The work by Derek McKay is partly supported by the Academy...
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ftaaltouniv:oai:aaltodoc.aalto.fi:123456789/113032 2024-04-28T08:38:10+00:00 On the determination of ionospheric electron density profiles using multi-frequency riometry McKay, Derek Vierinen, Juha Kero, Antti Partamies, Noora Metsähovi Radio Observatory University of Tromso University of Oulu University Centre in Svalbard Aalto-yliopisto Aalto University 2022-01-27 11 25-35 application/pdf https://aaltodoc.aalto.fi/handle/123456789/113032 https://doi.org/10.5194/gi-11-25-2022 en eng Copernicus Gesellschaft mbH Geoscientific Instrumentation, Methods and Data Systems Volume 11, issue 1 McKay, D, Vierinen, J, Kero, A & Partamies, N 2022, ' On the determination of ionospheric electron density profiles using multi-frequency riometry ', Geoscientific Instrumentation, Methods and Data Systems, vol. 11, no. 1, pp. 25-35 . https://doi.org/10.5194/gi-11-25-2022 2193-0856 PURE UUID: 7bdde970-9b90-4b52-9d52-f79d31d0c77e PURE ITEMURL: https://research.aalto.fi/en/publications/7bdde970-9b90-4b52-9d52-f79d31d0c77e PURE LINK: http://www.scopus.com/inward/record.url?scp=85124075940&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/79391626/ELEC_McKay_etal_On_the_determination_of_ionospheric_Geosci_Instrum_Method_Data_Syst_2022.pdf https://aaltodoc.aalto.fi/handle/123456789/113032 URN:NBN:fi:aalto-202202161924 doi:10.5194/gi-11-25-2022 openAccess A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä publishedVersion 2022 ftaaltouniv https://doi.org/10.5194/gi-11-25-2022 2024-04-10T00:19:42Z Funding Information: Acknowledgements. The authors wish to thank Andreas Kvammen, Theresa Rexer and Björn Gustavsson for their useful discussions. The authors also thank the reviewers for their positive responses and constructive criticism. The work by Derek McKay is partly supported by the Academy of Finland (project no. 322535). Juha Vierinen is supported by the Tromsø Science Foundation. The work of Antti Kero is funded by the Tenure Track Project in Radio Science at Sodankylä Geophysical Observatory and the University of Oulu. Noora Partamies is supported by the Research Council of Norway under CoE contract no. 223252 and a research grant contract (no. 287427). Publisher Copyright: © Copyright: Radio wave absorption in the ionosphere is a function of electron density, collision frequency, radio wave polarisation, magnetic field and radio wave frequency. Several studies have used multi-frequency measurements of cosmic radio noise absorption to determine electron density profiles. Using the framework of statistical inverse problems, we investigated if an electron density altitude profile can be determined by using multi-frequency, dual-polarisation measurements. It was found that the altitude profile cannot be uniquely determined from a "complete"measurement of radio wave absorption for all frequencies and two polarisation modes. This implies that accurate electron density profile measurements cannot be ascertained using multi-frequency riometer data alone and that the reconstruction requires a strong additional a priori assumption of the electron density profile, such as a parameterised model for the ionisation source. Nevertheless, the spectral index of the absorption could be used to determine if there is a significant component of hard precipitation that ionises the lower part of the D region, but it is not possible to infer the altitude distribution uniquely with this technique alone. Peer reviewed Article in Journal/Newspaper Sodankylä Tromsø Aalto University Publication Archive (Aaltodoc) Geoscientific Instrumentation, Methods and Data Systems 11 1 25 35 |
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Aalto University Publication Archive (Aaltodoc) |
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Funding Information: Acknowledgements. The authors wish to thank Andreas Kvammen, Theresa Rexer and Björn Gustavsson for their useful discussions. The authors also thank the reviewers for their positive responses and constructive criticism. The work by Derek McKay is partly supported by the Academy of Finland (project no. 322535). Juha Vierinen is supported by the Tromsø Science Foundation. The work of Antti Kero is funded by the Tenure Track Project in Radio Science at Sodankylä Geophysical Observatory and the University of Oulu. Noora Partamies is supported by the Research Council of Norway under CoE contract no. 223252 and a research grant contract (no. 287427). Publisher Copyright: © Copyright: Radio wave absorption in the ionosphere is a function of electron density, collision frequency, radio wave polarisation, magnetic field and radio wave frequency. Several studies have used multi-frequency measurements of cosmic radio noise absorption to determine electron density profiles. Using the framework of statistical inverse problems, we investigated if an electron density altitude profile can be determined by using multi-frequency, dual-polarisation measurements. It was found that the altitude profile cannot be uniquely determined from a "complete"measurement of radio wave absorption for all frequencies and two polarisation modes. This implies that accurate electron density profile measurements cannot be ascertained using multi-frequency riometer data alone and that the reconstruction requires a strong additional a priori assumption of the electron density profile, such as a parameterised model for the ionisation source. Nevertheless, the spectral index of the absorption could be used to determine if there is a significant component of hard precipitation that ionises the lower part of the D region, but it is not possible to infer the altitude distribution uniquely with this technique alone. Peer reviewed |
author2 |
Metsähovi Radio Observatory University of Tromso University of Oulu University Centre in Svalbard Aalto-yliopisto Aalto University |
format |
Article in Journal/Newspaper |
author |
McKay, Derek Vierinen, Juha Kero, Antti Partamies, Noora |
spellingShingle |
McKay, Derek Vierinen, Juha Kero, Antti Partamies, Noora On the determination of ionospheric electron density profiles using multi-frequency riometry |
author_facet |
McKay, Derek Vierinen, Juha Kero, Antti Partamies, Noora |
author_sort |
McKay, Derek |
title |
On the determination of ionospheric electron density profiles using multi-frequency riometry |
title_short |
On the determination of ionospheric electron density profiles using multi-frequency riometry |
title_full |
On the determination of ionospheric electron density profiles using multi-frequency riometry |
title_fullStr |
On the determination of ionospheric electron density profiles using multi-frequency riometry |
title_full_unstemmed |
On the determination of ionospheric electron density profiles using multi-frequency riometry |
title_sort |
on the determination of ionospheric electron density profiles using multi-frequency riometry |
publisher |
Copernicus Gesellschaft mbH |
publishDate |
2022 |
url |
https://aaltodoc.aalto.fi/handle/123456789/113032 https://doi.org/10.5194/gi-11-25-2022 |
genre |
Sodankylä Tromsø |
genre_facet |
Sodankylä Tromsø |
op_relation |
Geoscientific Instrumentation, Methods and Data Systems Volume 11, issue 1 McKay, D, Vierinen, J, Kero, A & Partamies, N 2022, ' On the determination of ionospheric electron density profiles using multi-frequency riometry ', Geoscientific Instrumentation, Methods and Data Systems, vol. 11, no. 1, pp. 25-35 . https://doi.org/10.5194/gi-11-25-2022 2193-0856 PURE UUID: 7bdde970-9b90-4b52-9d52-f79d31d0c77e PURE ITEMURL: https://research.aalto.fi/en/publications/7bdde970-9b90-4b52-9d52-f79d31d0c77e PURE LINK: http://www.scopus.com/inward/record.url?scp=85124075940&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/79391626/ELEC_McKay_etal_On_the_determination_of_ionospheric_Geosci_Instrum_Method_Data_Syst_2022.pdf https://aaltodoc.aalto.fi/handle/123456789/113032 URN:NBN:fi:aalto-202202161924 doi:10.5194/gi-11-25-2022 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.5194/gi-11-25-2022 |
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Geoscientific Instrumentation, Methods and Data Systems |
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11 |
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25 |
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