Particle Forcing Data

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    Could someone explain this please? Only heard this term a few days ago and cant seem to find anything readable on the subject -

    i did find this tho -

    4. Conclusions

    We show that the Northern winter hemisphere stratosphere is influenced by solar activity driven energetic particle forcing at a level that is comparable to that of the solar irradiance forcing. Our results show that this effect starts early in the winter season. Furthermore, with a comparable effect on stratospheric polar night jet, the further late winter EPF influence on the troposphere presented by Rozanov et al. and Seppälä et al. [6, 8] and Baumgaertner et al. [10] could be understood along the lines of the solar UV top–down coupling propagating downwards via the stratosphere–troposphere connection at high latitudes in later winter. Even though the initial effects on stratospheric dynamics differ, both influence the stratospheric polar night jet—key for providing the downwards coupling to the troposphere. Since the irradiance and particle forcing driven by the Sun typically have different magnitudes and phases of variation during the solar cycle, energetic particle forcing could provide an out-of-phase forcing mechanism from the Sun to the climate of the Earth's winter hemisphere.
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