Table 3 Percentage of positive NAO decades after the largest global (volcanic stratospheric sulphur injection > 6 TgS) and NH (volcanic stratospheric sulphur injection > 0.5 TgS) volcanic eruptions following Toohey and Sigl61.

From: A 2,000-year Bayesian NAO reconstruction from the Iberian Peninsula

 

Global (150 BCE–2012 CE)

NH (150 BCE –2012 CE)

NAOIP

18/36 (50%)

48/60 (80%)

NAOLUT

2/10 (20%)

7/22 (32%)

NAOTRO

15/202 (75%)

21/34 (64%)

NAOOLS

20/22 (91%)

51/56 (91%)

NAOORT

10/20 (50%)

14/34 (41%)

NAOBAK

23/40 (58%)

46/87 (53%)

NAOFAU

13/40(33%)

37/87 (43%)

NAOSJO

8/16 (50%)

15/26 (58%)

NAOCOOK

20/24 (83%)

36/43 (84%)

  1. NAOIP is in bold.