Swiss glaciers 1850–2100

Fieschergletscher 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 29.75km² Area in 2016 · ±0% compared with 2016
Area 201629.75km²3rd largest
Elevation1,678–4,159mmedian 3,138 m
Length15.0kmfaces south-east
1850 ice body37.4km²now 4 glaciers
Tongue since 1891−1,740m122 measurements
Thinning 1927–2023−50maverage surface lowering
Ice left in 21009%of 2020 volume, SSP2-4.5

Fieschergletscher E is the 3rd-largest glacier in Switzerland, covering 29.75 km² in the canton of Valais. Its ice spans 1,678 to 4,159 m and faces south-east. Its meltwater drains to the Rhône and on to the Mediterranean. In 1850 it was part of a larger ice body of 37.4 km², which has since split into 4 glaciers covering 30.9 km² in 2016 (−17%). Its tongue has been measured 122 times since 1891. In total it has retreated 1,740 m, about 13.2 m a year. Between 1927 and 2023 its surface dropped by 50 m on average. With strong climate protection (SSP1-2.6), about 23% of its 2020 ice would remain in 2100. With very high emissions (SSP5-8.5) it would be gone around 2088. Its meltwater is projected to peak around 2037.

Pictures

In pictures

Fieschergletscher E in 2023.
Fieschergletscher E in 2023. Carsten Steger · CC BY-SA 4.0 · Wikimedia Commons
Future

What remains in 2100

SSP1-2.6 · low emissions23%47% left in 2050
SSP2-4.5 · intermediate emissions9%38% left in 2050
SSP3-7.0 · high emissions2%39% left in 2050
SSP5-8.5 · very high emissionsGoneIce gone around 2088
SSP1-2.6SSP2-4.5SSP3-7.0SSP5-8.5
0%25%50%75%100%2020204020602080210023%9%2%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

05010015020020102030205020702090
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 1891

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

−2,000 m−1,500 m−1,000 m−500 m0 m1900192019401960198020002020−1,740 m
GLAMOS Swiss Glacier Length Change, release 2025.

Thinning since 1927

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

−60 m−40 m−20 m0 m19401960198020002020−50 m
GLAMOS Swiss Glacier Volume Change, release 2025.
Profile

Facts

Area over time

185037.37 km²193133.38 km²197332.65 km²201629.75 km²2050 · SSP2-4.524.66 km²2100 · SSP2-4.56.49 km²

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

SGI id
B40-07
Canton
Valais
River
Rhône → Mediterranean
Basin
Goms
Location
46.5088° N, 8.1361° E · swisstopo map
Elevation
1,678–4,159 m, median 3,138 m
Slope, aspect
18°, south-east
Debris cover
2.18 km² (7% of the area)
Inventory image
2017
Ice volume (model)
≈ 2.40 km³ in 2020 (OGGM)
RGI ids
RGI60-11.01478, RGI60-11.01511, RGI60-11.01519, RGI60-11.01555, RGI60-11.01705
In 1850 joined with
Finsteraahorn S, Oberaarhorn, Unnamed glacier B40-21
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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