Furness Abbey oak, England: no clear jump at 1052 to 1053, a small rise 1054 to 1055
Scifo et al. 2024, Table 1, oak BIF-E19 from Furness Abbey, measured at Groningen. Delta-14C permil: 1049 -7.05, 1050 -5.03, 1051 -8.53, 1052 -6.24, 1053 -7.31, 1054 -6.25, 1055 -1.81, 1056 -2.77, 1057 -2.92 (errors 1.5 to 2.3). Flat through 1054, then a 4.4 permil step into 1055. No 1052 to 1053 step at all. Their 1052 value (-6.2) and Brehm's (-10.6) for the same calendar year differ by more than 4 permil, which the authors note agree only at 2 sigma. Their conclusion: rises this small cannot yet be called radiation events.
How it connects
This clue from nature argues against
The 1052 white vapour matches the 1052 radiocarbon candidate does not reproduce the 1052 to 1053 step
This clue from nature supports this hunch
The 1054 supernova, not the Sun, made the carbon-14 rise of 1053 to 1055 onset near 1054
This clue from nature is a clue for
1052 carbon-14 candidate
This clue from nature we read it in
Scifo et al. 2024, New data fails to replicate the small-scale radiocarbon anomalies in the early second millennium CE, Radiocarbon 66(3)
This clue from nature came from this step
Pulled the raw radiocarbon numbers