Hayakawa et al. 2017, Records of sunspots and aurora candidates in the Chinese official histories of the Yuan and Ming dynasties during 1261 to 1644
How it connects
This book or paper is where we read about
Korea's violet glow of 25 October 1279 falls in the window for the 1279 to 1280 radiocarbon jump, and the main paper missed it
This book or paper is where we read about
Red glow in the northeast that lit up people, China, 9 February 1261