Greenland Ice Sheet Losing Ice Mass on Northwest Coast
Geschreven op 8-4-2010 - Erik van Erne. Geplaatst in Klimaat
Ice loss from the Greenland ice sheet, which has been increasing during the past decade over its southern region, is now moving up its northwest coast, according to a new international study.
Led by the Denmark Technical Institute’s National Space Institute in Copenhagen and involving the University of Colorado at Boulder, the study indicated the ice-loss acceleration began moving up the northwest coast of Greenland starting in late 2005.
The team drew their conclusions by comparing data from NASA’s Gravity and Recovery Climate Experiment satellite system, or GRACE, with continuous GPS measurements made from long-term sites on bedrock on the edges of the ice sheet.
The data from the GPS and GRACE provided the researchers with monthly averages of crustal uplift caused by ice-mass loss. The team combined the uplift measured by GRACE over United Kingdom-sized chunks of Greenland while the GPS receivers monitor crustal uplift on scales of just tens of miles. “Our results show that the ice loss, which has been well documented over southern portions of Greenland, is now spreading up along the northwest coast,” said Shfaqat Abbas Khan, lead author on a paper that will appear in Geophysical Research Letters. Source: University of Colorado
Klimaatnieuws: IJs op Groenland smelt sneller en sneller - Iceberg Sculptures Uummannaq Greenland by Ab Verheggen
Erik van Erne zegt:
1 oktober 2011 om 11:56 | Permalink
Time-lapse footage reveals the Jakobshavn glacier in crisis
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Erik van Erne zegt:
6 oktober 2011 om 11:59 | Permalink
Biggest Greenland Petermann glacier break-up
Erik van Erne zegt:
10 december 2019 om 19:51 | Permalink
Climate Change: Greenland Ice Melt Is Accelerating
Greenland is losing ice seven times faster than it was in the 1990s.
The assessment comes from an international team of polar scientists who’ve reviewed all the satellite observations over a 26-year period.
They say Greenland’s contribution to sea-level rise is currently tracking what had been regarded as a pessimistic projection of the future. It means an additional 7cm of ocean rise could now be expected by the end of the century from Greenland alone. This threatens to put many millions more people in low-lying coastal regions at risk of flooding.
It’s estimated roughly a billion live today less than 10m above current high-tide lines, including 250 million below 1m.