This image collection from the National Snow and Ice Data Center features 14 pairs of Alaskan glacier photographs. Each photographic pair consists of a late-19th or early-20th century photograph and a 21st century photograph taken from the same location. The comparative photographs clearly show substantial changes in glacier position and size and document significant landscape evolution and vegetative succession. The site also provides links to pairs of photographs of glaciers in Switzerland, a repeat photography project at Glacier National Park by the USGS, a glacier database which features satellite images and maps, and further information on glaciers.
Subject: Geoscience:Atmospheric Science:Climate Change, Climate Change:Paleoclimate records, Environmental Science:Global Change and Climate:Climate Change:Paleoclimate records, Geoscience:Atmospheric Science:Climatology Resource Type: Scientific Resources:Collection, Audio/Visual:Images/Illustrations Theme: Teach the Earth:Course Topics:Atmospheric Science, Environmental Science, Teach the Earth:Incorporating Societal Issues:Climate ChangeKeywords: climate change, global warming
