How much glacier mass has been lost since 1975, and what is the scale of this loss?

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Glacier Mass Loss Since 1975 Exceeds 9 Trillion Tonnes, Equivalent to a Block of Ice the Size of Germany

Since records began in 1975, glaciers worldwide have experienced a cumulative mass loss exceeding 9,000 billion tonnes. This substantial reduction in ice volume is comparable to a colossal block of ice measuring the size of Germany and possessing a thickness of 25 metres. This significant decline underscores the accelerating impact of climate change on these critical freshwater reserves.
Cumulative Glacier Mass Loss Since 1975

The World Glacier Monitoring Service (WGMS) estimates that glaciers, excluding the continental ice sheets of Greenland and Antarctica, have lost over 9,000 billion tonnes of mass since 1975. This figure represents a stark indicator of the ongoing environmental changes affecting the planet's cryosphere.
Scale of Loss Equivalent to German-Sized Ice Block

To contextualise the magnitude of this loss, WGMS director Michael Zemp stated it is equivalent to a vast ice formation the size of Germany with a depth of 25 metres. This analogy highlights the immense volume of ice that has melted and contributed to rising sea levels and altered hydrological cycles globally.
Accelerating Glacier Retreat and Future Survival Concerns

The year 2024 marked the third consecutive year where all 19 of the world's glacier regions registered a net loss of mass. This trend is part of a broader pattern, with five of the last six years exhibiting the most rapid glacier retreat on record. The World Meteorological Organization (WMO) has emphasized that the preservation of glaciers is now a matter of "survival."
Regional Impacts and Long-Term Outlook

While some regions like the Canadian Arctic and peripheral Greenland glaciers experienced relatively moderate losses in the 2022-2024 period, others, including Scandinavia and the Svalbard archipelago, recorded their worst years on record. At current melting rates, many glaciers in western Canada, the United States, Scandinavia, central Europe, the Caucasus, and New Zealand are not expected to survive the 21st century.

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How much glacier mass has been lost since 1975, and what is the scale of this loss?

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