Articles | Volume 10, issue 2
Earth Syst. Sci. Data, 10, 805–814, 2018
https://doi.org/10.5194/essd-10-805-2018
Earth Syst. Sci. Data, 10, 805–814, 2018
https://doi.org/10.5194/essd-10-805-2018

  20 Apr 2018

20 Apr 2018

Historical glacier outlines from digitized topographic maps of the Swiss Alps

Daphné Freudiger et al.

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Latest update: 02 Dec 2021
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Short summary
To understand glacier changes in the Swiss Alps at the large scale, long-term datasets are needed. To fill the gap between the existing glacier inventories of the Swiss Alps between 1850 and 1973, we digitized glacier outlines from topographic historical maps of Switzerland for the time periods ca. 1900 and ca. 1935. We found that > 88 % of the digitized glacier area was plausible compared to four inventories. The presented dataset is therefore valuable information for long-term glacier studies.