Cosmic ray modulation strength (Phi) since 1936 for the LIS by Burger, Potgieter and Heber (2000)


The monthly values of the modulation parameter Phi (in MV) reconstructed from the ground-based cosmic ray data since 1936 are presented in tabular and vector form. The modulation parameter corresponds to the local interstellar spectrum (LIS) of cosmic rays as provided by Burger, Potgieter and Heber (2000)

Full description of the procedure and the reference to these data can be found in:

  • Usoskin et al., Heliospheric modulation of cosmic rays: Monthly reconstruction for 1951-2004, J. Geophys. Res., 110, A12108, 2005.
  • Usoskin, I. G., G. A. Bazilevskaya, and G. A. Kovaltsov, Solar modulation parameter for cosmic rays since 1936 reconstructed from ground-based neutron monitors and ionization chambers, J. Geophys. Res., 116, A02104, 2011 (doi:10.1029/2010JA016105).
  • Burger, R. A., M. S. Potgieter, and B. Heber (2000), Rigidity dependence of cosmic ray proton latitudinal gradients measured by the Ulysses spacecraft: Implication for the diffusion tensor, J. Geophys. Res., 105, 27,447.

    Updated cosmic ray modulation strength (Phi) since 1951 for the LIS by Vos and Potgieter (2015)


    A revised reconstruction of monthly modulation parameter Phi (in MV) from ground-based cosmic ray data since 1951: in tabular and vector form. The modulation parameter corresponds to the local interstellar spectrum (LIS) of cosmic rays as provided by Vos and Potgieter (2015)

    Full description of the procedure and the reference to these data can be found in:

  • Usoskin, I.G., A. Gil, G.A. Kovaltsov, A. Mishev, V.V. Mikhailov, Heliospheric modulation of cosmic rays during the neutron monitor era: Calibration using PAMELA data for 2006-2010, J. Geophys. Res. Space Phys., 122, 3875-3887, 2017, doi: 10.1002/2016JA023819
  • Vos, E.E., and M. S. Potgieter), New modeling of galactic proton modulation during the minimum of solar cycle 23/24, Astrophys. J., 815, 119, 2015. doi:10.1088/0004-637X/815/2/119.

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    Last modified 08.08.2018 by Ilya Usoskin