A Spiegel article says the Greenland ice sheet is doomed unless we act immediately.
That's a lie. Spiegel claims Greenland “glaciers are continuously losing huge masses of ice” and that the system there is “dramatically off balance”.
The leftist Hamburg-based weekly reported: The melting of the glaciers on Greenland has apparently passed the point of no return. Even if the global rise in temperature were to stop immediately, the ice sheet would continue to retreat, report researchers led by Michalea King of Ohio State University report in the journal “Communications Earth and Environment“.
Lecavalier et al. 2017 claims 11,000 years ago, Greenland was up to 4°C warmer than in 1950 (Greenland warmed about +1°C since 1950) ... so why was the “point of no return” not exceeded 10,000 years ago?
The Greenland Ice Sheet is melting in the 21st century, and is the largest single contributor to rising sea levels. The retreat of Greenland glacier fronts was especially noticeable between 2000 and 2005.
There are satellite gravity measurements in the Lecavalier paper that show a linear mass loss of only 275 Gt/year between 2003 and 2019 (there's a gap in 2017 and 2018 due to a satellite change), with about 4,200 Gt lost in those 17 years.
But that's only about 0.15% of the total mass of the Greenland sheet ! So just what does "doomed" and “point of no return” really mean ?
Note:
In mid-August 2020, Greenland’s surface mass balance (SMB) is normally losing 4 gigatons of snow and ice per day. But on on August 10, 2020, the ice sheet actually gained a record breaking 4 gigatons of snow and ice. No mention of that unusual event in the mainstream media, of course.
Before this year, the Greenland ice sheet had NEVER grown anywhere-close to 4 gigatons a day in any of the months of June, July, or August, according to Danish Meteorological Insititute (DMI) records (data since 1981). The DMI data reveal the unusual August 10, 2020 4 Gt. snow and ice gain broke the previous mid-August record by over 2 gigatons !
As this planet warmed over the past 20,000 years, ice, snow, and glaciers have receded. At and around Greenland, and Northern Europe, this melting is controlled mainly by the North Atlantic ocean’s flow, and temperature variations, not mainly by atmospheric CO2 levels.
Glacier calving (part of the glacier's edge breaks off and falls into the ocean) is not a sure indication of melting, or warming. Snow and ice build-up on the glacier causes the glacier (a very slowly moving river of ice) to flow toward the sea, where portions overhanging the sea eventually break off and fall into the sea ... whether there is global warming, or global cooling.