“Miyake event,” a very strong solar storm that directly impacts Earth, occurs. The event is recorded in the rings of ancient trees, which will be analyzed in 2022 in a paper published in Royal Society Publishing. Annually resolved measurements of the radiocarbon content of tree rings have revealed rare, sharp increases in carbon-14 production. These “Miyake events” are likely caused by rare increases in cosmic radiation from the Sun or other astrophysical energy sources. The paper, “Modeling cosmic radiation events in the tree-ring radiocarbon record,” is by Qingyuan Zhang, Utkarsh Sharma, Jordan A. Dennis, Andrea Scifo, Margot Kuitems, Ulf Büntgen, Mathew J. Owens, Michael W. Dee, and Benjamin J.S. Pope.
