Increasing river sediment concentration and flux across the pan-Arctic
Jinren Ni
Nature Geoscience, Published online: 13 April 2026; doi:10.1038/s41561-026-01960-z The total sediment flux from land to the ocean across the pan-Arctic has risen by 15% since 1980, driven by greater river discharge, intensified thermokarst disturbances and wildfire activity, according to machine learning and satellite-based reconstructions of suspended sediment dynamics in 4,331 river reaches.