Fig. 3: Correlation analyses between AO/PNA and fire danger ratings.

Maximum correlation between the AO and PFIv2 (a) and between the PNA and PFIv2 (c). b and d show the lag in days when the maximum correlation occurs. e–h are the same as (a–d) but for the FWI calculations. Dotted regions are significant at 95% level. Reddish grids indicate larger lags.