12.5 Trillion Tons of Ice Melted from Greenland and Antarctica Over 47 Years

A recent scientific report has quantified the scale of glacial loss in the 1979‑present era, estimating that 12.5 trillion tons (11.3 trillion metric tons) of ice from Greenland and Antarctica have melted. The figure is equivalent to a 5‑foot (1.5‑meter) high layer of ice spread evenly across the continental United States, underscoring the magnitude of the loss in frozen water.

The study, which draws on satellite observations and climate models, attributes the accelerated melt to rising global temperatures and associated changes in oceanic and atmospheric circulation. It also highlights the cascading effects on sea‑level rise, ocean salinity, and the global climate system, noting that the loss of this ice mass is already contributing to higher sea levels and altering weather patterns.

These findings reinforce the urgency of reducing greenhouse‑gas emissions and enhancing adaptation strategies. While the report does not predict a single future trajectory, it stresses that continued ice loss will exacerbate coastal vulnerability and global climate instability.