The surface temperature of Greenland's ice sheet has been rising as a result of warming air temperatures, a Nasa study has concluded.
Though the loss of the whole ice sheet is unlikely, the researchers say, melt water from the ice mass has already contributed in part to 20th Century sea level rise of about two millimetres each year.
The team warns that future melt has the potential to impact people and economies across the globe.
The scientists used Nasa satellite technologies to explore the behaviour of the ice sheet, revealing a relationship between changes at the surface and below.
The findings appear in the Journal of Glaciology.
Read the entire paper here (PDF)
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