▁consistent ▁with ▁w ig gle - match ing ▁d ating ▁and ▁history ▁records . ▁ ▁Multi - proxy ▁d ating ▁ ▁O ppen heimer ▁et ▁al ., ▁( 2 0 1 7 ) ▁A ▁radi oc ar bon ▁signal ▁of ▁ 7 7 5 ▁CE ▁in ▁a ▁sub f oss il ▁l arch ▁eng ulf ed ▁and ▁killed ▁during ▁the ▁initial ▁explos ive ▁er u ption , ▁combined ▁with ▁gla cial ▁evidence ▁from ▁Green land , ▁dates ▁the ▁er u ption ▁to ▁late ▁ 9 4 6 ▁CE . ▁This ▁date ▁rules ▁out ▁the ▁Mill en ni um ▁E ruption ▁contribution ▁to ▁the ▁collapse ▁of ▁the ▁Bal ha e ▁in ▁ 9 2 6 ▁CE . ▁They ▁also ▁did ▁not ▁see ▁a ▁consequ ent ▁cool ing ▁signal ▁in ▁tree - ring - based ▁reconst ru ctions ▁of ▁Northern ▁Hem is phere ▁summer ▁temper atures . ▁The ▁new ▁date ▁focus es ▁attention ▁on ▁the ▁chron icle ▁from ▁a ▁temple ▁in ▁Japan ▁that ▁reports ▁" white ▁ash ▁falling ▁like ▁snow " ▁on ▁ 3 ▁November ▁ 9 4 6 ▁AD . ▁ ▁E ruption ▁volume ▁▁ ▁The ▁er u ption ▁volume ▁has ▁not ▁been ▁well ▁const rained , ▁from ▁ 7 0 ▁to ▁ 1 6 0   km 3 . ▁Mach ida ▁et ▁al . ▁( 1 9 9 0 ) ▁roughly ▁estimated ▁the ▁proxim al ▁volume ▁( including ▁ign im br ite ▁and ▁Pl in ian ▁fall ) ▁no ▁more ▁than ▁ 2 0   km 3 , ▁and ▁the ▁volume ▁of ▁dist