Fig. 2: Global distribution of studied river basins and projected evolution of high-tide flooding frequencies.
From: Global acceleration of compound flood risks through fluvial-tidal interactions in a warming climate
a Map showing the spatial distribution and drainage areas (km²) of the 20 major river basins analyzed. River mouths are marked with orange icons. b Time series of annual high-tide flooding (HTF) frequency (%) for each basin from 1950 to 2050. Black lines indicate historical simulations (1950–2014), and purple dashed lines represent reanalysis data (1950–2024). Red lines depict future projections under the SSP5-8.5 scenario (2015–2050). Shaded areas denote the uncertainty range (standard deviation). The HTF threshold is defined as the >99th percentile of the 1950–2014 historical baseline for SSP5-8.5 projections, and the >99th percentile of the self-consistent 1950–2024 baseline for reanalysis data.
