What to Do When the F10.7 Goes Out?
Abstract The solar radio flux at 10.7 cm, known as F10.7, is a critical operational space weather index. However, without a clear backup, any interruption to the service can result in substantial errors in model outputs. In this paper we show the impact of one such outage in March 2022 on the models...
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| Format: | Article |
| Language: | English |
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Wiley
2023-04-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2022SW003392 |
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| author | Sean Elvidge David R. Themens Matthew K. Brown Elizabeth Donegan‐Lawley |
| author_facet | Sean Elvidge David R. Themens Matthew K. Brown Elizabeth Donegan‐Lawley |
| author_sort | Sean Elvidge |
| collection | DOAJ |
| description | Abstract The solar radio flux at 10.7 cm, known as F10.7, is a critical operational space weather index. However, without a clear backup, any interruption to the service can result in substantial errors in model outputs. In this paper we show the impact of one such outage in March 2022 on the models TIE‐GCM and NeQuick, and present a number of alternative solutions that could be used for future outages. The analysis is extended to the F10.7 time series since 1951 and the approach resulting in the smallest reconstruction error of F10.7 uses the solar radio flux observations at alternative wavelengths (the best giving a percentage error of 3.1%). Alternatively, use of Sunspot Number, a regular, robust alternative observation, results in a mean percentage error of 8.2% and is also a reliable fallback solution. Additionally, analysis of the error on the use of the conversion between the 12‐month rolling sunspot number (R12) and its conversion to F10.7 is included. |
| format | Article |
| id | doaj-art-44c52ba149834cfcad34f34b0b2a73f2 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2023-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-44c52ba149834cfcad34f34b0b2a73f22025-01-14T16:26:47ZengWileySpace Weather1542-73902023-04-01214n/an/a10.1029/2022SW003392What to Do When the F10.7 Goes Out?Sean Elvidge0David R. Themens1Matthew K. Brown2Elizabeth Donegan‐Lawley3Space Environment and Radio Engineering Group (SERENE) University of Birmingham Birmingham UKSpace Environment and Radio Engineering Group (SERENE) University of Birmingham Birmingham UKSpace Environment and Radio Engineering Group (SERENE) University of Birmingham Birmingham UKSpace Environment and Radio Engineering Group (SERENE) University of Birmingham Birmingham UKAbstract The solar radio flux at 10.7 cm, known as F10.7, is a critical operational space weather index. However, without a clear backup, any interruption to the service can result in substantial errors in model outputs. In this paper we show the impact of one such outage in March 2022 on the models TIE‐GCM and NeQuick, and present a number of alternative solutions that could be used for future outages. The analysis is extended to the F10.7 time series since 1951 and the approach resulting in the smallest reconstruction error of F10.7 uses the solar radio flux observations at alternative wavelengths (the best giving a percentage error of 3.1%). Alternatively, use of Sunspot Number, a regular, robust alternative observation, results in a mean percentage error of 8.2% and is also a reliable fallback solution. Additionally, analysis of the error on the use of the conversion between the 12‐month rolling sunspot number (R12) and its conversion to F10.7 is included.https://doi.org/10.1029/2022SW003392operationsF10.7upper atmosphereionospherethermosphere |
| spellingShingle | Sean Elvidge David R. Themens Matthew K. Brown Elizabeth Donegan‐Lawley What to Do When the F10.7 Goes Out? Space Weather operations F10.7 upper atmosphere ionosphere thermosphere |
| title | What to Do When the F10.7 Goes Out? |
| title_full | What to Do When the F10.7 Goes Out? |
| title_fullStr | What to Do When the F10.7 Goes Out? |
| title_full_unstemmed | What to Do When the F10.7 Goes Out? |
| title_short | What to Do When the F10.7 Goes Out? |
| title_sort | what to do when the f10 7 goes out |
| topic | operations F10.7 upper atmosphere ionosphere thermosphere |
| url | https://doi.org/10.1029/2022SW003392 |
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