Swiss glaciers 1850–2100

Ammertegletscher E

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 0.889km² Area in 2016 · ±0% compared with 2016
Area 20160.89km²173rd largest
Elevation2,357–3,165mmedian 2,656 m
Length1.5kmfaces north-west
Area since 1850−47%1.68 km² in 1850
Tongue since 1970−111m52 measurements
Thinning 1985–2023−18maverage surface lowering
Ice left in 21009%of 2020 volume, SSP2-4.5

Ammertegletscher E is one of 1,400 glaciers in Switzerland, covering 0.89 km² in the canton of Bern. Its ice spans 2,357 to 3,165 m and faces north-west. Its meltwater drains to the Rhine and on to the North Sea. In 1850, at the end of the Little Ice Age, it covered 1.68 km²; by 2016 it had lost 47% of that area. Its tongue has been measured 52 times since 1970. In total it has retreated 111 m, about 2.0 m a year. Between 1985 and 2023 its surface dropped by 18 m on average. With strong climate protection (SSP1-2.6), about 27% of its 2020 ice would remain in 2100. With very high emissions (SSP5-8.5) it would be gone around 2080. Its meltwater peaked around 2019.

Pictures

In pictures

Ammertegletscher E in 2015.
Ammertegletscher E in 2015. Bgvr · CC BY-SA 4.0 · Wikimedia Commons
Future

What remains in 2100

SSP1-2.6 · low emissions27%36% left in 2050
SSP2-4.5 · intermediate emissions9%36% left in 2050
SSP3-7.0 · high emissionsGoneIce gone around 2096
SSP5-8.5 · very high emissionsGoneIce gone around 2080
SSP1-2.6SSP2-4.5SSP3-7.0SSP5-8.5
0%25%50%75%100%2020204020602080210027%9%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

01.02.03.04.05.020102030205020702090
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 1970

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

−125 m−100 m−75 m−50 m−25 m0 m25 m197019801990200020102020−111 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 m1990200020102020−18 m
GLAMOS Swiss Glacier Volume Change, release 2025.
Profile

Facts

Area over time

18501.679 km²19311.463 km²19731.170 km²20160.889 km²2050 · SSP2-4.50.292 km²2100 · SSP2-4.50.131 km²

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

SGI id
A55f-01
Canton
Bern
River
Rhine → North Sea
Basin
Kander & Simme
Location
46.4160° N, 7.5430° E · swisstopo map
Elevation
2,357–3,165 m, median 2,656 m
Slope, aspect
24°, north-west
Debris cover
0.29 km² (33% of the area)
Inventory image
2016
Ice volume (model)
≈ 0.020 km³ in 2020 (OGGM)
RGI ids
RGI60-11.01943
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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