| Autor: |
Lockwood, Mike, Owens, Mathew J., Barnard, Luke A., Scott, Chris J., Watt, Clare E., Bentley, Sarah |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
J. Space Weather Space Clim., doi 10.1051/swsc/2017048, 2018 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1051/swsc/2017048 |
| Popis: |
Using the reconstruction of power input to the magnetosphere given in Paper 1 (arXiv:1708.04904), we reconstruct annual means of geomagnetic indices over the past 400 years to within a 1-sigma error of +/-20 pc. In addition, we study the behaviour of the lognormal distribution of daily and hourly values about these annual means and show that we can also reconstruct the fraction of geomagnetically-active (storm-like) days and (substorm-like) hours in each year to accuracies of 50-60 pc. The results are the first physics-based quantification of the space weather conditions in both the Dalton and Maunder minima. We predict terrestrial disturbance levels in future repeats of these minima, allowing for the weakening of Earth's dipole moment. |
| Databáze: |
arXiv |
| Externí odkaz: |
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