Climate change and aerosols drive persistent drought and lower rainfall in Southwest, study finds

In the late 2010s, when Assistant Professor Flavio Lehner worked for the National Center for Atmospheric Research in Boulder, Colorado, water managers often asked him about the drought in the Southwest. Was the low precipitation simply an unlucky draw in the cycle of long-term weather variations? What role did climate change play? Most importantly, was the drought there to stay?

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