Summer monsoons in Arizona’s mountainous high country bring rains that dampen the potential for severe wildfires and replenish groundwater aquifers. So, with global temperatures on the rise there’s a growing threat of weaker monsoons, resulting in more fire-prone forest lands and depleted water tables, say experts such as hydrologist Enrique Vivoni, a professor in the School of Sustainable Engineering and the Built Environment, one of the six Fulton Schools, and ASU’s School of Earth and Space Exploration. Results of recent research reported in the journal Nature Climate Change and studies by National Oceanic and Atmospheric Administration support the warning of Vivoni and others about the troubling outlook.