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[INTERNATIONAL] · Greece, Antarctica · 49 sources

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Greenland and Antarctica ice loss reaches 11 trillion tons since 1979

A major study published in Scientific Data by the Ice Sheet Mass Balance Intercomparison Exercise (IMBIE) reveals that the Greenland and Antarctic ice sheets have lost approximately 11 to 12.5 trillion metric tons of ice between 1979 and 2023. This massive loss of ice has contributed to a global sea-level rise of roughly 3.1 to 3.14 centimeters.

Researchers found that the rate of ice loss has accelerated significantly since the 1990s, with a notable increase in volume during the 2010s. The study highlights that approximately 84 percent of this ice loss is driven by dynamic processes—specifically glaciers flowing more rapidly into the ocean due to warming waters—rather than direct surface melting from warmer air.

Lead author Inès Otosaka of Northumbria University noted that while a 3-centimeter rise may seem minor, every additional centimeter of sea-level rise puts an estimated 2 to 3 million people at risk of annual coastal flooding. The findings, based on data from 27 satellite missions, underscore the long-term impact of warming oceans on polar ice stability.

Entities

Antarctic ice sheet · Antarctica · Greenland · Greenland Ice Sheet · IMBIE · Ice Sheet Mass Balance Intercomparison Exercise · Ines Otosaka · Northumbria University · Scientific Data

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