2025 USGS Benchmark Glaciers Ablation Season Positive Degree Days
Detailed Description
Cumulative 2025 ablation season positive degree days (sum of daily mean temperatures >0°C, when the glacier is melting) at each glacier’s median elevation, based on local weather station data (O'Neel et al., 2019), shown in red where above and blue where below the 1991 – 2020 mean (grey line). Grey shading and boxplots show the range of the 1991 – 2020 climate normal period.
Sources/Usage
Public Domain.
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Related
2025 USGS Benchmark Glaciers Executive Summary
2025 Data Now Available: Explore how the USGS Benchmark Glaciers have changed in 2025
Glaciers and Landscape Change
Mountain glaciers are dynamic reservoirs of frozen water, deeply interconnected with their surrounding ecosystems. Glacier change in North America has major societal impacts, including to water resources, natural hazard risk, tourism disruption, fisheries, and global sea level change. Understanding and quantifying precise connections between changing glaciers, the surrounding landscape and climate...