Brown Bag Seminar: Drought and other climate-related hazards in the southwestern United States and southern Arizona
Featuring Dr. Gregg Garfin, University of Arizona School of Natural Resources and the Environment
Wednesday, February 3, 2021 - 12:00pm
Recent observed direct changes to the climate of the southwestern United States include increased average and extreme temperatures. Increased temperatures have led to a variety of indirect effects on the climate of the region, including less spring snowpack, reduced amount of water in the mountain snowpack, earlier snowmelt runoff in many parts of the region, and an increase in the fraction of winter and early spring precipitation falling as rain rather than snow, in some parts of the region. These hydrological changes, along with reduced soil moisture, at least partly attributed to regional warming trends, affect surface and groundwater hydrology. Drought is a signature climate phenomenon in the Southwest, due to the region’s geography and topography. The most severe and sustained regional droughts, recorded in tree-ring records, have occurred in the period before rain-gauge observations. In recent decades warming temperatures have intensified the severity of the current Southwest drought. Dr. Garfin will reflect on possible impacts of drought and projected future climate changes on surface and groundwater in our region, along with drought-related impacts, such as wildfire and forest mortality.
No Registration Required.
Zoom Link: https://arizona.zoom.us/j/83071899432