Ice-core sulfate 1230 Antarctic, 1231 to 1232 Greenland
Possibly two eruptions.
How it connects
This clue from nature is a clue for
1229 eruption (ice cores said 1230)
This clue from nature explains
The Moon went as dark as a moonless night: Fujiwara no Teika on the eclipse of 2 December 1229
This clue from nature we read it in
Cole-Dai et al. 2024, Five large 13th century volcanic eruptions recorded in Antarctica ice cores, Atmosphere 15:661