Dr. Jon Riedel is a geologist with the U.S. National Park Service at North Cascades National Park. He holds a M.S. degree from the University of Wisconsin (1987) and a Ph.D. from Simon Fraser University (2007). For more than 25 years his research has focused on the sensitive response of Washington’s glaciers to climate change, from the last ice age 30,000 years ago to modern glaciers. Jon established glacier monitoring programs at Mount Rainier (2003) and North Cascades (1993) national parks to track seasonal changes in accumulation, melt and runoff from six glaciers.