Map showing drought conditions in the western United States in 2020

Does Less Pollution Mean Less Precipitation?

IIHR researchers Wei Zhang and Gabriele Villarini (IIHR director) have published research linking urban sprawl to an increase in rainfall and flooding during Hurricane Harvey.
IIHR Currents Cover 2015 showing a wave of water inside a transparent globe of the world
Atmospheric "river"- five images of the United States with a colorful weather overlay
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Atmospheric Rivers Linked to a Wet December

New research points to atmospheric rivers as a likely trigger of major rainfall events, like the one that overflowed the Mississippi's banks last December.