Table 1 Percentage of days with positive or/and negative phases of PNA and AO for indices larger than 0.5 standard deviation from March to October during the 2001–2020 interval.

From: Arctic Oscillation and Pacific-North American pattern dominated-modulation of fire danger and wildfire occurrence

Index

AO+

PNA+

AO−

PNA−

PNA+

10

27

7

–

PNA−

6

–

9

28

AO+

29

10

–

6

AO−

–

7

28

9

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