Greenland Ice Sheet Extreme Melting Accelerates
Similar Articles
Study Finds Antarctic Ice Shelf Channels Trap Warm Water, Amplifying Local Melting
Deep Ocean Heat Shift Toward Antarctica Could Affect Ice Shelves
Ancient Antarctic Ice Reveals Earth's Cooling Climate Over 3 Million Years
Southern Ocean Rainfall Increases 28% Since 1979, Affecting Antarctic Cooling
Study Projects Climate Change Will Expand Wildfire Risk and Threaten More Species
A new study shows extreme melting events on Greenland's ice sheet have expanded significantly since 1990, releasing vastly more meltwater. The northern part of Greenland is a hotspot for this phenomenon, and projections suggest these intense meltwater anomalies could triple by the century's end under high emissions scenarios.
Facts First
- Extreme melt area expanded by 2.8 million km² per decade since 1990
- Meltwater from extreme events increased sixfold since 1990 to 82.4 gigatons per decade
- Seven of the ten most extreme melting events occurred since 2000
- Northern Greenland identified as a major hotspot for extreme melting
- Projections suggest intense meltwater anomalies could triple by century's end
What Happened
A study led by the University of Barcelona examined extreme melting events on Greenland's ice sheet between 1950 and 2023. Since 1990, the surface area affected by these extreme events has expanded by approximately 2.8 million km² per decade. The amount of meltwater released during these extreme events has increased sixfold since 1990, reaching 82.4 gigatons per decade. Seven of the ten most extreme melting events on record have occurred since 2000, with major events noted in August 2012, July 2019, and July 2021. The northern part of Greenland is identified as a major hotspot for this extreme melting.
Why this Matters to You
The accelerated melting of Greenland's ice sheet contributes directly to global sea level rise, which could impact coastal communities worldwide. The projected tripling of intense meltwater anomalies by the end of the century under high emissions scenarios suggests this contribution may become significantly larger, potentially affecting infrastructure, property, and ecosystems. The research provides clearer data on the scale and location of these events, which may help inform future climate adaptation and mitigation strategies.
What's Next
The study suggests that monitoring and modeling these extreme events will continue. Projections indicate that the most intense meltwater anomalies could increase by as much as threefold by the end of the century if high greenhouse gas emission scenarios persist. Further research by the Antarctic, Arctic and Alpine Environments (ANTALP) Research Group may refine these projections and examine the specific impacts of different atmospheric circulation patterns.