Solar Modulation Level vs Time
Data from the CRIS instrument have been used to calculate the level of solar modulation as a function of time, from late 1997 onwards.
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Plot of solar modulation parameter (phi), as a function of time,
using CRIS C, O, Mg, Si, and Fe data.
PDF format. Last update: January 2023. -
Table of data values used to create the solar modulatio plot.
Text format. Last update: January 2023. - Description of the technique used may be found in Wiedenbeck et al., Proc. 29th ICRC (Pune), vol. 2, pp. 277-280 (2005).
- An earlier version of the plot is included in Israel et al., ApJ 865 69 (2018), Fig. 1.
Contributed Data Page
Last modified: Thu Jan 2023