Fig. 6: The effect of ENSO on the frequency of dry compounds is season-dependent.
From: South America is becoming warmer, drier, and more flammable
Pearson correlation between the seasonal SST anomalies in the Niño Regions and the corresponding number of dry compounds. Upper row: Niño 1+2 Region; Lower row: Niño 3.4 Region. The following season were considered: (a, b) December-January-February (DJF), (c, d) March-April-May (MAM), (e, f) June-July-August (JJA), and (g, h) September-October- November (SON). Stippling indicates statistical significance (p value: 0.05). The number of dry compounds per season was derived from daily estimates from the ERA5 dataset over the period 1997–2022. SST anomalies in the Niño Regions come from the Climate Prediction Center (CPC), part of the National Oceanic and Atmospheric Administration (NOAA), available at https://www.cpc.ncep.noaa.gov/data/indices/wksst8110.for. Plots were generated by using Python’s Matplotlib Library82.
