The Alps to lose a record number of glaciers in the next decade

An international team led by ETH Zurich published in Nature Climate Change a first-of-its-kind, glacier-by-glacier projection using three global models that quantifies how many glaciers will survive through 2100 under different warming paths and when they will disappear. Under a +1.5°C scenario roughly 100,000 glaciers would remain versus about 18,000 at +4°C; the study defines a “Peak Glacier Extinction” when annual losses peak at ≈2,000 glaciers around 2041 under +1.5°C and ≈4,000 around 2055 under +4°C. Regional impacts are acute — the Alps would retain ~12% of today’s glaciers at +1.5°C (~430), ~8% at +2.0°C (~270) and ~1% at +4°C (~20), with similar catastrophic declines projected for the Rockies, Andes and Central Asia — and small, low-elevation and tropical glaciers are most vulnerable. The authors stress these timelines matter for water resources, tourism, natural-hazard management and policy: every fraction of a degree of warming substantially changes the number and timing of glacier losses, informing mitigation and adaptation priorities.

Analysis

The ETH Zurich-led study published 15 December 2025 in Nature Climate Change delivers the first glacier-by-glacier projections to 2100 using three state-of-the-art glacier models and multiple climate scenarios, estimating roughly 100,000 glaciers would remain under a +1.5 °C pathway versus about 18,000 under +4.0 °C. The authors introduce “Peak Glacier Extinction” — a metric of annual disappearance — which they project at ~2,000 glaciers/year around 2041 for +1.5 °C and ~4,000 around 2055 for +4 °C, reflecting that stronger warming eradicates not only small glaciers but larger ones as well.

Regional breakdowns are stark: the Alps would retain ~12% (~430 of ~3,000) at +1.5 °C, ~8% (~270) at +2.0 °C and ~1% (~20) at +4 °C; the Rocky Mountains fall from ~4,400 glaciers (~25%) at +1.5 °C to ~101 at +4 °C; the Andes and Central Asia drop from ~43% survival at +1.5 °C to 94–96% losses at +4 °C (≈950 and ≈2,500 remaining). The paper notes small, low-elevation and tropical glaciers are most vulnerable (examples: Rhône shrinking, Aletsch fragmenting) and cites historical losses including >1,000 Swiss glaciers lost between 1973–2016.

The study amplifies implications for water resources, tourism, natural-hazard management and regional economies because complete glacier disappearance can remove local water stores and tourist assets even if mass loss contributes little to sea level rise; timing matters because adaptation windows differ by scenario. Market signals attached to the article show moderately negative sentiment with limited immediate market impact (market_impact_score 0.33), underscoring the need for investors to incorporate the study’s scenario timelines into ESG and sector exposure assessments for travel & leisure, infrastructure and water-dependent industries.

Key Decisions for Investors

• Reprice and stress-test exposures to tourism, alpine real estate and local utilities in the Alps, Rockies, Andes and Central Asia given the projected near-term peak losses and long-term declines
• Increase allocation or engagement with companies and municipal projects focused on water storage, flood and natural-hazard mitigation, remote sensing and climate adaptation services because demand for these solutions should rise under all warming scenarios
• Require enhanced counterparty due diligence for water-dependent supply chains and consider hedges or reduced concentration where glacier-fed water risk is material, particularly for agriculture and hydropower counterparties in affected regions
• Embed the study’s +1.5 °C / +2.7 °C / +4 °C timelines into portfolio climate stress tests and monitor policy developments, since each fraction of a degree materially alters asset-level risk and potential adaptation costs