Overview

• Researchers used the SNOWPACK model to study temperature impacts on Greenland's firn layer.
• Firn covers 90% of the Greenland Ice Sheet and acts as a buffer against sea level rise.
• Warming reduces firn's 'sponginess,' leading to faster ice sheet mass loss.
• Cooling temperatures do not fully restore firn's capacity to store meltwater.
• The findings challenge the effectiveness of geoengineering solutions to reverse Arctic ice loss.