Scientists warn that Greenland’s ice sheet is undergoing increasingly frequent and severe melt episodes, a trend that has intensified markedly in recent decades and highlights mounting climate risks. A new study tracking extreme melt events from 1950 to 2023 found that since 1990 the area affected by severe melting has grown by roughly 1.08 million square miles per decade, and the amount of meltwater produced during these events has increased more than sixfold, from about 12.7 gigatons to 82.4 gigatons per decade.
Seven of the ten largest melt episodes ever recorded have occurred since 2000, including massive events in 2012, 2019 and 2021, underscoring how dramatically the ice sheet’s behavior has changed. Even when similar weather patterns occur, today’s much warmer atmosphere generates significantly more melting than in previous decades, scientists say, showing that this is driven by broader climate warming rather than just unusual weather.
Researchers note that if greenhouse gas emissions remain high, extreme meltwater production could triple by 2100, fundamentally altering the ice sheet and accelerating global sea level rise. Beyond contributing to rising oceans, this has implications for ocean circulation, weather patterns and coastal communities worldwide. News as reported
