Mass Balance Summary
The Benchmark Glacier Research project measures changes in mass balance at four benchmark glaciers: Gulkana (AK), Wolverine (AK), South Cascade (WA), and Sperry (MT). The graphs below depict the period of record for mass balance measurements of which the Alaskan and Washington datasets constitute the longest continuous set of mass balance data in North America (Josberger and others, 2007). With the inclusion of Sperry Glacier in 2013, these four research sites were unified into a single project with common field and analysis methodologies to enable comparison among the glaciers. This project aims to measure each glacier's response to climate change and helps researchers understand the causes and magnitude of glacier change at a continental scale.