Earth to Sky Connection Leads to New Perspectives on Change in Glacier Bay National Park

Earth to Sky Connection Leads to New Perspectives on Change in Glacier Bay National Park

In spring of 2019, Earth to Sky's co-lead Anita Davis received an inquiry from Glacier Bay National Park (GLBA) rangers for new information about the changing glaciers in the park. Anita contacted Dr. Christopher Shuman (UMBC JCET), a scientist working at NASA Goddard Space Flight Center's Cryospheric Sciences Lab for any updates that might be provided. In turn, Dr Shuman undertook development of a 1972-2018 Landsat imagery time series depicting changes to glaciers in the park.

His analysis showed widespread glacial melt and increased debris-covered ice; flow system changes; ice front retreat; and recent landslides, some of which were news to park staff. This information and imagery were shared with the GLBA rangers in early July 2019. Park rangers used these images to describe and explore with visitors the changes happening in GLBA. One ranger stated that these images and Christopher’s assistance “completely transformed how they talk about glaciers at the park.” The dramatic changes, not particularly evident from the ground, came into sharp focus when viewed using the time series of Landsat imagery.