Global fire and lightning seasonality

Using a 0.25-degree resolution based on the ERA5 reanalysis product, these data present two interlinked products reflecting the seasonality of fire, lightning, and ignition patterns. The fire season product ('fire_season') reflects season definitions of potential ignitions based on a) localised fine fuel flammability thresholds (see DOI:10.25959/rbk3-5d65) and b) lightning stroke density. Season definitions are simplified to reflect the initiation and cessation day of the year (1-365). The global land use product ('global_land_use') reflects associated statistics, including the a) lengths of periods within each fire season where ignitions are driven predominantly by anthropogenic or mixed (i.e., anthropogenic and lightning) ignitions, b) total and proportional burned area (via MODIS burned area product, 2001-2024) occurring within each of the aforementioned ignition periods, c) mean MODIS-based vegetation productivity (2001-2023), and d) mean annual suppression intensity and fractional burned area attributed to human land management (1991-2014).