Swiss glaciers 1850–2100

Eigergletscher

IceIce lost since 1850This glacier

Past extents come from the Swiss Glacier Inventories of 1850, 1931, 1973 and 2016. Future extents are illustrative: each glacier’s projected area (OGGM, median of CMIP6 climate models) is removed from its lowest ice upward. About the scenarios.

Inventory 1.52km² Area in 2016 · ±0% compared with 2016
Area 20161.52km²114th largest
Elevation2,409–4,107mmedian 3,114 m
Length2.5kmfaces west
1850 ice body2.8km²now 2 glaciers
Tongue since 1876−547m96 measurements
Thinning 1985–2024−20maverage surface lowering
Ice left in 210012%of 2020 volume, SSP2-4.5

Eigergletscher is one of 1,400 glaciers in Switzerland, covering 1.52 km² in the canton of Bern. Its ice spans 2,409 to 4,107 m and faces west. Its meltwater drains to the Rhine and on to the North Sea. In 1850 it was part of a larger ice body of 2.8 km², which has since split into 2 glaciers covering 1.6 km² in 2016 (−44%). Its tongue has been measured 96 times since 1876. In total it has retreated 547 m, about 3.8 m a year. Between 1985 and 2024 its surface dropped by 20 m on average. With strong climate protection (SSP1-2.6), about 52% of its 2020 ice would remain in 2100. With very high emissions (SSP5-8.5) it would be gone around 2076. Its meltwater peaked around 2020.

Pictures

Then and now

ThenAround 1890–1900. Photochrom print, Library of Congress.
Around 1890–1900. Photochrom print, Library of Congress. Photochrom Print Collection · Public domain · Wikimedia Commons
NowEigergletscher in 2007.
Eigergletscher in 2007. myself · Public domain · Wikimedia Commons
Future

What remains in 2100

SSP1-2.6 · low emissions52%59% left in 2050
SSP2-4.5 · intermediate emissions12%61% left in 2050
SSP3-7.0 · high emissionsGoneIce gone around 2093
SSP5-8.5 · very high emissionsGoneIce gone around 2076
SSP1-2.6SSP2-4.5SSP3-7.0SSP5-8.5
0%25%50%75%100%2020204020602080210052%12%0%0%
Ice volume as a share of 2020, median of 14 climate models; shaded: middle two-thirds of models. OGGM v1.6.

Meltwater

Million m³ of water per year, 11-year mean

024681020102030205020702090
Water leaving the glacier area each year: ice melt, snowmelt and rain. It rises while the glacier melts faster, then falls as the ice runs out: “peak water”.
Measured

The record

Length change since 1876

Position of the glacier tongue, measured in the field almost every year. Hover for each measurement.

−600 m−400 m−200 m0 m200 m19001925195019752000−547 m
GLAMOS Swiss Glacier Length Change, release 2025.

Thinning since 1985

Average change in surface height, from comparing elevation models made from maps, aerial images and laser scans.

−20 m−15 m−10 m−5 m0 m1990200020102020−20 m
GLAMOS Swiss Glacier Volume Change, release 2025.
Profile

Facts

Area over time

18502.83 km²19312.62 km²19732.25 km²20161.52 km²2050 · SSP2-4.51.00 km²2100 · SSP2-4.50.43 km²

Past areas are the ice body this glacier belonged to at the time. Projections: OGGM median, SSP2-4.5.

SGI id
A54m-03
Canton
Bern
River
Rhine → North Sea
Basin
Upper Aare
Location
46.5690° N, 8.0000° E · swisstopo map
Elevation
2,409–4,107 m, median 3,114 m
Slope, aspect
30°, west
Debris cover
none mapped
Inventory image
2018
Ice volume (model)
≈ 0.057 km³ in 2020 (OGGM)
RGI ids
RGI60-11.01424, RGI60-11.01431, RGI60-11.01461
In 1850 joined with
Nollengletscher (Lauterbrunnen)
Sources

Sources

  1. Linsbauer et al. (2021). The new Swiss Glacier Inventory SGI2016. Frontiers in Earth Science 9. doi.org/10.3389/feart.2021.704189
  2. Mannerfelt et al. (2022). Halving of Swiss glacier volume since 1931 observed from terrestrial image photogrammetry. The Cryosphere 16. doi.org/10.5194/tc-16-3249-2022
  3. GLAMOS – Glacier Monitoring Switzerland. www.glamos.ch
  4. Zekollari et al. (2024). Twenty-first century global glacier evolution under CMIP6 scenarios and the role of glacier-specific observations. The Cryosphere 18 (OGGM v1.6 projections). tc.copernicus.org/articles/18/5045/2024/

Relief: swisstopo swissALTIRegio. 1850 and 1973 outlines: Maisch et al. (2000), Müller et al. (1976), Paul (2004). Length, mass balance and volume change: GLAMOS releases 2025. All sources and methods.

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