In a study published in the journal Nature Geoscience, Greenland the second biggest ice sheet behind Antarctica serves as a new piece of puzzle that each one of us needs to understand.
The glacier slides up to 220 percent faster towards the sea during summer than in winter.
The effect of global warming could mean a wider world repercussions as it would raise the worldwide sea levels. Greenland has enough ice to raise world sea levels by about 7 meters (23 feet) if it all melted.
The scientists speculated that the summer slide is linked to melt water seeping under the ice. The same did not comment that the change in speed between summer and winter was part of the natural shifts or was due to the effect of climate change.
However, they declared in writing that “In a warming climate, with longer and more intense summer melt seasons, we would expect that water will reach the bed farther inland and a large portion of the ice sheet will experience summer velocity changes.” A group of experts at Edinburgh University in Scotland led by Ian Bartholomew had said that the variability was much stronger than earlier observations of glacier movement in Greenland.
Based on GPS satellite measurements of the glacier in southwest of Greenland up to 35 kilometers (22 miles) inland and an altitude of up to 1095 meters (3592 feet) showed that the ice in some places slid at 300 meters per year at peak summer rates. It is through this observation that they have come up that substantial increases in ice velocity by 220 percent in summer than in winter.