Academic Journal
A catalogue of observed geo-effective CME/ICME characteristics
| العنوان: | A catalogue of observed geo-effective CME/ICME characteristics |
|---|---|
| المؤلفون: | Mugatwala, R., Chierichini, S., Francisco, G., Napoletano, G., Foldes, R., Giovannelli, L., De Gasperis, G., Camporeale, E., Erdélyi, R., Del Moro, D. |
| بيانات النشر: | EDP Sciences |
| سنة النشر: | 2024 |
| المجموعة: | White Rose Research Online (Universities of Leeds, Sheffield & York) |
| الوصف: | One of the goals of Space Weather studies is to achieve a better understanding of impulsive phenomena, such as Coronal Mass Ejections (CMEs), to improve our ability to forecast their propagation characteristics and mitigate the risks to our technologically driven society. The essential part of achieving this goal is to assess the performance of forecasting models. To this end, the quality and availability of suitable data are of paramount importance. In this work, we merged publicly available data of CMEs from both in-situ and remote observations in order to build a dataset of CME properties. To evaluate the accuracy of the dataset and confirm the relationship between in-situ and remote observations, we have employed the Drag-Based Model (DBM) due to its simplicity and modest consumption of computational resources. In this study, we have also explored the parameter space for the drag parameter and solar wind speed using a Monte Carlo approach to evaluate how efficiently the DBM determines the propagation of CMEs for the events in the dataset. The geoeffective CMEs selected as a result of this work are compliant with the hypothesis of DBM (isolated CME, constant solar wind speed beyond 20 R⊙) and also yield further insight into CME features such as arrival time and arrival speed at L1 point, lift-off time, speed at 20 R⊙ and other similar quantities. Our analysis based on the acceptance rate in the DBM inversion procedure shows that almost 50% of the CME events in the dataset are well described by DBM as they propagate in the heliosphere. The dataset includes statistical metrics for the DBM model parameters. The probability distribution functions (PDFs) for the free parameters of DBM have been derived through a Monte Carlo-like inversion procedure. Probability distribution functions obtained from this work are comparable to PDFs employed in previous works. The analysis showed that there exist two different most probable values (median values) of solar wind speed for DBM input based on slow (wslow ≈ 386 km/s) and ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | text |
| اللغة: | English |
| Relation: | https://eprints.whiterose.ac.uk/221097/1/swsc230027.pdf; Mugatwala, R. orcid.org/0000-0003-4443-9966 , Chierichini, S., Francisco, G. et al. (7 more authors) (2024) A catalogue of observed geo-effective CME/ICME characteristics. Journal of Space Weather and Space Climate, 14. 6. ISSN 2115-7251 |
| الاتاحة: | https://eprints.whiterose.ac.uk/221097/ https://eprints.whiterose.ac.uk/221097/1/swsc230027.pdf |
| Rights: | cc_by_4 |
| رقم الانضمام: | edsbas.2F2CFAAD |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |