An Operational Geomagnetic Baseline Derivation Method for Magnetic Observatories Located in Mid‐Latitudes
Abstract Ground magnetic field measurements are an important tool to determine the strength of space weather events in the terrestrial environment on local and global scales. For that purpose, geomagnetic baselines play a vital role as they describe typical quiet variations within geomagnetic data w...
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| Format: | Article |
| Language: | English |
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Wiley
2024-12-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2024SW004048 |
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| _version_ | 1832575435278385152 |
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| author | Veronika Haberle Aurélie Marchaudon Aude Chambodut Pierre‐Louis Blelly |
| author_facet | Veronika Haberle Aurélie Marchaudon Aude Chambodut Pierre‐Louis Blelly |
| author_sort | Veronika Haberle |
| collection | DOAJ |
| description | Abstract Ground magnetic field measurements are an important tool to determine the strength of space weather events in the terrestrial environment on local and global scales. For that purpose, geomagnetic baselines play a vital role as they describe typical quiet variations within geomagnetic data which allows the successive isolation of magnetic storm contributions. This work introduces an operational baseline derivation method to accurately assess then replace the amplitude of space weather events within high‐quality ground magnetic field measurements from magnetic observatories located in mid‐latitudes. A two‐step approach first identifies storm and disturbance intervals within the magnetic signal. Quiet variations, consistent with pre‐ and post‐disturbance periods, are then used to replace the signal during the identified intervals. The final baseline is validated through comparisons with existing methods and through demonstration during moderate and strong space weather events at 13 globally distributed observatories, demonstrating its ability to track quiet variations accurately while maintaining them during disturbances. This supports the application of the introduced baseline for geomagnetic field description and new magnetic index derivation for space weather event characterization with high spatio‐temporal resolution. As the method is deployable in near real‐time, it is suitable for operational environments. |
| format | Article |
| id | doaj-art-f3926b08dc02432a8a71f6613180124d |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-f3926b08dc02432a8a71f6613180124d2025-02-01T08:10:32ZengWileySpace Weather1542-73902024-12-012212n/an/a10.1029/2024SW004048An Operational Geomagnetic Baseline Derivation Method for Magnetic Observatories Located in Mid‐LatitudesVeronika Haberle0Aurélie Marchaudon1Aude Chambodut2Pierre‐Louis Blelly3Institut de Recherche en Astrophysique et Planétologie Université de Toulouse CNRS CNES Toulouse FranceInstitut de Recherche en Astrophysique et Planétologie Université de Toulouse CNRS CNES Toulouse FranceUniversité de Strasbourg CNRS Strasbourg FranceInstitut de Recherche en Astrophysique et Planétologie Université de Toulouse CNRS CNES Toulouse FranceAbstract Ground magnetic field measurements are an important tool to determine the strength of space weather events in the terrestrial environment on local and global scales. For that purpose, geomagnetic baselines play a vital role as they describe typical quiet variations within geomagnetic data which allows the successive isolation of magnetic storm contributions. This work introduces an operational baseline derivation method to accurately assess then replace the amplitude of space weather events within high‐quality ground magnetic field measurements from magnetic observatories located in mid‐latitudes. A two‐step approach first identifies storm and disturbance intervals within the magnetic signal. Quiet variations, consistent with pre‐ and post‐disturbance periods, are then used to replace the signal during the identified intervals. The final baseline is validated through comparisons with existing methods and through demonstration during moderate and strong space weather events at 13 globally distributed observatories, demonstrating its ability to track quiet variations accurately while maintaining them during disturbances. This supports the application of the introduced baseline for geomagnetic field description and new magnetic index derivation for space weather event characterization with high spatio‐temporal resolution. As the method is deployable in near real‐time, it is suitable for operational environments.https://doi.org/10.1029/2024SW004048ionospheric disturbancesgeomagnetic baselinespace weathernowcast |
| spellingShingle | Veronika Haberle Aurélie Marchaudon Aude Chambodut Pierre‐Louis Blelly An Operational Geomagnetic Baseline Derivation Method for Magnetic Observatories Located in Mid‐Latitudes Space Weather ionospheric disturbances geomagnetic baseline space weather nowcast |
| title | An Operational Geomagnetic Baseline Derivation Method for Magnetic Observatories Located in Mid‐Latitudes |
| title_full | An Operational Geomagnetic Baseline Derivation Method for Magnetic Observatories Located in Mid‐Latitudes |
| title_fullStr | An Operational Geomagnetic Baseline Derivation Method for Magnetic Observatories Located in Mid‐Latitudes |
| title_full_unstemmed | An Operational Geomagnetic Baseline Derivation Method for Magnetic Observatories Located in Mid‐Latitudes |
| title_short | An Operational Geomagnetic Baseline Derivation Method for Magnetic Observatories Located in Mid‐Latitudes |
| title_sort | operational geomagnetic baseline derivation method for magnetic observatories located in mid latitudes |
| topic | ionospheric disturbances geomagnetic baseline space weather nowcast |
| url | https://doi.org/10.1029/2024SW004048 |
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