The Badhwar‐O'Neill 2020 GCR Model
Abstract The Badhwar‐O'Neill (BON) model has been used for some time to describe the galactic cosmic ray (GCR) environment encountered in deep space by astronauts and sensitive electronics. The most recent version of the model, BON2014, was calibrated to available measurements to reduce model e...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-06-01
|
| Series: | Space Weather |
| Online Access: | https://doi.org/10.1029/2020SW002456 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841536445320265728 |
|---|---|
| author | T. C. Slaba K. Whitman |
| author_facet | T. C. Slaba K. Whitman |
| author_sort | T. C. Slaba |
| collection | DOAJ |
| description | Abstract The Badhwar‐O'Neill (BON) model has been used for some time to describe the galactic cosmic ray (GCR) environment encountered in deep space by astronauts and sensitive electronics. The most recent version of the model, BON2014, was calibrated to available measurements to reduce model errors for particles and energies of significance to astronaut exposure. Although subsequent studies showed the model to be reasonably accurate for such applications, modifications to the sunspot number (SSN) classification system and a large number of new high‐precision measurements suggested the need to develop an improved and more capable model. In this work, the BON2020 model is described. The new model relies on daily integral flux from the Advanced Composition Explorer Cosmic Ray Isotope Spectrometer (ACE/CRIS) to describe solar activity. For time periods not covered by ACE/CRIS, the updated international SSN database is used. Parameters in the new model are calibrated to available data, which include the new Alpha Magnetic Spectrometer (AMS‐02) and Payload for Antimatter Matter Exploration and Light‐nuclei Astrophysics (PAMELA) high‐precision measurements. It is found that the BON2020 model is a significant improvement over BON2014. Systematic bias associated with BON2014 has been removed. The average relative error of the BON2020 model compared to all available measurements is found to be <1%, and BON2020 is found to be within ±15% of a large fraction of the available measurements (26,269 of 27,646 → 95%). |
| format | Article |
| id | doaj-art-df72e9ba2a6541be8c749a8e280391d0 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2020-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-df72e9ba2a6541be8c749a8e280391d02025-01-14T16:30:42ZengWileySpace Weather1542-73902020-06-01186n/an/a10.1029/2020SW002456The Badhwar‐O'Neill 2020 GCR ModelT. C. Slaba0K. Whitman1NASA Langley Research Center Hampton VA USAUniversity of Houston Houston TX USAAbstract The Badhwar‐O'Neill (BON) model has been used for some time to describe the galactic cosmic ray (GCR) environment encountered in deep space by astronauts and sensitive electronics. The most recent version of the model, BON2014, was calibrated to available measurements to reduce model errors for particles and energies of significance to astronaut exposure. Although subsequent studies showed the model to be reasonably accurate for such applications, modifications to the sunspot number (SSN) classification system and a large number of new high‐precision measurements suggested the need to develop an improved and more capable model. In this work, the BON2020 model is described. The new model relies on daily integral flux from the Advanced Composition Explorer Cosmic Ray Isotope Spectrometer (ACE/CRIS) to describe solar activity. For time periods not covered by ACE/CRIS, the updated international SSN database is used. Parameters in the new model are calibrated to available data, which include the new Alpha Magnetic Spectrometer (AMS‐02) and Payload for Antimatter Matter Exploration and Light‐nuclei Astrophysics (PAMELA) high‐precision measurements. It is found that the BON2020 model is a significant improvement over BON2014. Systematic bias associated with BON2014 has been removed. The average relative error of the BON2020 model compared to all available measurements is found to be <1%, and BON2020 is found to be within ±15% of a large fraction of the available measurements (26,269 of 27,646 → 95%).https://doi.org/10.1029/2020SW002456 |
| spellingShingle | T. C. Slaba K. Whitman The Badhwar‐O'Neill 2020 GCR Model Space Weather |
| title | The Badhwar‐O'Neill 2020 GCR Model |
| title_full | The Badhwar‐O'Neill 2020 GCR Model |
| title_fullStr | The Badhwar‐O'Neill 2020 GCR Model |
| title_full_unstemmed | The Badhwar‐O'Neill 2020 GCR Model |
| title_short | The Badhwar‐O'Neill 2020 GCR Model |
| title_sort | badhwar o neill 2020 gcr model |
| url | https://doi.org/10.1029/2020SW002456 |
| work_keys_str_mv | AT tcslaba thebadhwaroneill2020gcrmodel AT kwhitman thebadhwaroneill2020gcrmodel AT tcslaba badhwaroneill2020gcrmodel AT kwhitman badhwaroneill2020gcrmodel |