Heavier Rainfall, Glacier Melt Increase Flooding Across the Tibetan Plateau

Nature Communications, 18 March 2026

This study identified a marked increase in both flood frequency and peak river flows across the Tibetan Plateau after 2016. Conditions were relatively stable from 1980–2016, after which flooding became more frequent and intense across many river systems. This shift is linked to stronger climate extremes, including more intense short bursts of rainfall, longer periods of heavy precipitation, higher temperatures, and faster-melting snow and glaciers. Together, these factors increased the amount of water entering rivers, and also altered how water is stored and released across the landscape. Increased flooding following 2016 also aligned with higher atmospheric moisture levels from the 2015–2016 El Niño-Southern Oscillation (ENSO) event, which altered regional precipitation. Together with accelerated snow and glacier melt, these changes caused a long-lasting increase in both flood frequency and severity, including more compound events where heavy rainfall and melt processes occurred together, intensifying flooding.

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