Fig 8. ¹⁴C-data for the 5259 BC Miyake [19] measured on single tree rings of Siberian Larch (lila) and Alpine Larch (blue) compared to IntCal20 sets (green).

The graph illustrates how difficult it can be to recognise Miyake events. Despite large amplitude (~ 100 BP), the excess ¹⁴C is rapidly (within ~20 yrs) removed from the atmosphere. In consequence, the 5259 BC Miyake is hidden from the view of decadel/bidecadel IntCal20 tree-ring data. For clarity the IntCal20 data (from American and European trees) are shown without calendric scale error bars.