Analysis of the Ground Level Enhancement GLE 60 on 15 April 2001, and Its Space Weather Effects: Comparison With Dosimetric Measurements
Abstract As a result of notable solar activity observed in April 2001, one of the strongest ground level enhancements (GLE) of solar cycle 23 occurred, namely GLE # 60 on 15 April 2001. In this paper, we derived the spectral and angular characteristics, and apparent source position of the solar prot...
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Wiley
2023-08-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2023SW003488 |
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| author | N. Larsen A. L. Mishev |
| author_facet | N. Larsen A. L. Mishev |
| author_sort | N. Larsen |
| collection | DOAJ |
| description | Abstract As a result of notable solar activity observed in April 2001, one of the strongest ground level enhancements (GLE) of solar cycle 23 occurred, namely GLE # 60 on 15 April 2001. In this paper, we derived the spectral and angular characteristics, and apparent source position of the solar protons during the GLE # 60, using a verified by direct measurements model and employing the calibrated neutron monitor yield function. Subsequently, employing the updated and verified by balloon measurements dosimetric model: Oulu CRAC:DOMO (Cosmic Ray Atmospheric Cascade: Dosimetric Model) we computed the dose rates throughout the event at several altitudes using the obtained spectra as an input. A global map of the ambient dose at an altitude of 35 kft is computed. A comparison with direct dosimetric measurements obtained by a Liulin device during an intercontinental flight is performed and good agreement is achieved. |
| format | Article |
| id | doaj-art-d4d3e16a3e1e4d81b992a0c307444990 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2023-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-d4d3e16a3e1e4d81b992a0c3074449902025-01-14T16:31:19ZengWileySpace Weather1542-73902023-08-01218n/an/a10.1029/2023SW003488Analysis of the Ground Level Enhancement GLE 60 on 15 April 2001, and Its Space Weather Effects: Comparison With Dosimetric MeasurementsN. Larsen0A. L. Mishev1Space Physics and Astronomy Research Unit University of Oulu Oulu FinlandSpace Physics and Astronomy Research Unit University of Oulu Oulu FinlandAbstract As a result of notable solar activity observed in April 2001, one of the strongest ground level enhancements (GLE) of solar cycle 23 occurred, namely GLE # 60 on 15 April 2001. In this paper, we derived the spectral and angular characteristics, and apparent source position of the solar protons during the GLE # 60, using a verified by direct measurements model and employing the calibrated neutron monitor yield function. Subsequently, employing the updated and verified by balloon measurements dosimetric model: Oulu CRAC:DOMO (Cosmic Ray Atmospheric Cascade: Dosimetric Model) we computed the dose rates throughout the event at several altitudes using the obtained spectra as an input. A global map of the ambient dose at an altitude of 35 kft is computed. A comparison with direct dosimetric measurements obtained by a Liulin device during an intercontinental flight is performed and good agreement is achieved.https://doi.org/10.1029/2023SW003488ground level enhancementGLE 60radiationsolar energetic particlesdosimetric measurementsspace weather |
| spellingShingle | N. Larsen A. L. Mishev Analysis of the Ground Level Enhancement GLE 60 on 15 April 2001, and Its Space Weather Effects: Comparison With Dosimetric Measurements Space Weather ground level enhancement GLE 60 radiation solar energetic particles dosimetric measurements space weather |
| title | Analysis of the Ground Level Enhancement GLE 60 on 15 April 2001, and Its Space Weather Effects: Comparison With Dosimetric Measurements |
| title_full | Analysis of the Ground Level Enhancement GLE 60 on 15 April 2001, and Its Space Weather Effects: Comparison With Dosimetric Measurements |
| title_fullStr | Analysis of the Ground Level Enhancement GLE 60 on 15 April 2001, and Its Space Weather Effects: Comparison With Dosimetric Measurements |
| title_full_unstemmed | Analysis of the Ground Level Enhancement GLE 60 on 15 April 2001, and Its Space Weather Effects: Comparison With Dosimetric Measurements |
| title_short | Analysis of the Ground Level Enhancement GLE 60 on 15 April 2001, and Its Space Weather Effects: Comparison With Dosimetric Measurements |
| title_sort | analysis of the ground level enhancement gle 60 on 15 april 2001 and its space weather effects comparison with dosimetric measurements |
| topic | ground level enhancement GLE 60 radiation solar energetic particles dosimetric measurements space weather |
| url | https://doi.org/10.1029/2023SW003488 |
| work_keys_str_mv | AT nlarsen analysisofthegroundlevelenhancementgle60on15april2001anditsspaceweathereffectscomparisonwithdosimetricmeasurements AT almishev analysisofthegroundlevelenhancementgle60on15april2001anditsspaceweathereffectscomparisonwithdosimetricmeasurements |