Solar superstorm of AD 774 recorded subannually by Arctic tree rings

• Published in: Nature Communications
• Main Authors: Uusitalo, J., Arppe, L., Hackman, T., Helama, S., Kovaltsov, G., Mielikäinen, K., Mäkinen, H., Nöjd, P., Palonen, V., Usoskin, I., Oinonen, M.
• Other Authors: Suomen Akatemia (Academy of Finland)
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer Science and Business Media LLC 2018
• Subjects: General Physics and Astronomy; General Biochemistry, Genetics and Molecular Biology; General Chemistry; Arctic
• Online Access: http://dx.doi.org/10.1038/s41467-018-05883-1; http://www.nature.com/articles/s41467-018-05883-1.pdf; http://www.nature.com/articles/s41467-018-05883-1