Swiss glaciers 1850–2100

Feegletscher zentral

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 13.82km² Area in 2016 · ±0% compared with 2016
Area 201613.82km²12th largest
Elevation2,171–4,206mmedian 3,311 m
Length5.3kmfaces north-east
1850 ice body19.9km²now 3 glaciers
Tongue since 1883−1,564m110 measurements
Thinning 1931–2023−30maverage surface lowering
Ice left in 210021%of 2020 volume, SSP2-4.5

Feegletscher zentral is the 12th-largest glacier in Switzerland, covering 13.82 km² in the canton of Valais. Its ice spans 2,171 to 4,206 m and faces north-east. Its meltwater drains to the Rhône and on to the Mediterranean. In 1850 it was part of a larger ice body of 19.9 km², which has since split into 3 glaciers covering 14.5 km² in 2016 (−27%). Its tongue has been measured 110 times since 1883. In total it has retreated 1,564 m, about 11.2 m a year. Between 1931 and 2023 its surface dropped by 30 m on average. With strong climate protection (SSP1-2.6), about 46% of its 2020 ice would remain in 2100. With very high emissions (SSP5-8.5) it would be gone around 2091. Its meltwater peaked around 2020.

Pictures

In pictures

Feegletscher zentral.
Feegletscher zentral. Cactus26 · CC BY-SA 3.0 · Wikimedia Commons
Future

What remains in 2100

SSP1-2.6 · low emissions46%58% left in 2050
SSP2-4.5 · intermediate emissions21%57% left in 2050
SSP3-7.0 · high emissions4%55% left in 2050
SSP5-8.5 · very high emissionsGoneIce gone around 2091
SSP1-2.6SSP2-4.5SSP3-7.0SSP5-8.5
0%25%50%75%100%2020204020602080210045%21%4%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

025507520102030205020702090
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 1883

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 m500 m19001925195019752000−1,564 m
GLAMOS Swiss Glacier Length Change, release 2025.

Thinning since 1931

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

−30 m−20 m−10 m0 m19401960198020002020−30 m
GLAMOS Swiss Glacier Volume Change, release 2025.
Profile

Facts

Area over time

185019.89 km²193118.29 km²197317.06 km²201613.82 km²2050 · SSP2-4.59.97 km²2100 · SSP2-4.54.56 km²

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

SGI id
B53-04
Canton
Valais
River
Rhône → Mediterranean
Basin
Vispa
Location
46.0800° N, 7.8710° E · swisstopo map
Elevation
2,171–4,206 m, median 3,311 m
Slope, aspect
23°, north-east
Debris cover
0.64 km² (5% of the area)
Inventory image
2015
Ice volume (model)
≈ 0.792 km³ in 2020 (OGGM)
RGI ids
RGI60-11.02596, RGI60-11.02624
In 1850 joined with
Chessjengletscher NW, Feegletscher N
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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