Halving of Swiss glacier volume since 1931 observed from terrestrial image photogrammetry
22 August 2022
How glaciers have responded to climate change over the last 20 years is well-known, but earlier data are much more scarce. The authors change this in Switzerland by using 22,000 photographs taken from mountain tops between the world wars and find a halving of Swiss glacier volume since 1931. This was done through new automated processing techniques that the authors created. The data are interesting for more than just glaciers, such as mapping forest changes, landslides, and human impacts on the terrain.
The press release of the ETH Zürich can be found at: https://ethz.ch/en/news-and-events/eth-news/news/2022/08/a-historical-perspective-on-glacial-retreat.html