Cosmic Rays Sink to a 6-Year Low

Posted: January 1, 2023 by oldbrew in cosmic rays, Cycles, solar system dynamics
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The approach to solar max is underway.

Spaceweather.com

Dec. 30, 2022: Cosmic rays reaching Earth just hit a six-year low. Neutron counters in Oulu, Finland, registered the sudden decrease on Dec. 26th when a coronal mass ejection (CME) hit Earth’s magnetic field:

The CME swept aside galactic cosmic rays near our planet, abruptly reducing radiation levels. Researchers call this a “Forbush Decrease,” after American physicist Scott Forbush, who studied cosmic rays in the early 20th century.

The Dec. 26th event continues a trend that began in 2020. Since then, cosmic ray fluxes have been fitfully decreasing as one CME after another hit Earth. The reason is Solar Cycle 25, which began around that time and has been gaining strength. The Forbush Decreases are adding up.

Scott Forbush was the first to notice the yin-yang relationship between solar activity and cosmic rays. When one goes up, the other goes down. CMEs play a big role in this relationship…

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Comments
  1. oldbrew says:

    ‘For the 35th month in a row, Solar Cycle 25 is outperforming the official forecast. Conclusion: Solar Maximum will either happen sooner or be stronger than expected–possibly both’

    https://spaceweather.com/archive.php?view=1&day=02&month=01&year=2023
    – – –
    The Sun has recently gone past its furthest point from the solar system barycentre (SSBC) in this cycle. It will arc round to arrive at its closest to the SSBC in late 2029 or early 2030.