Science versus alarmism and advocacy

Abstract: A continuous data set of Greenland Ice Sheet altimeter height from European Remote Sensing satellites (ERS-1 and ERS-2), 1992 to 2003, has been analyzed. An increase of 6.4 T 0.2 centimeters per year (cm/year) is found in the vast interior areas above 1500 meters, in contrast to previous reports of highelevation balance. Below 1500 meters, the elevation-change rate is –2.0 T 0.9 cm/year, in qualitative agreement with reported thinning in the ice-sheet margins.  Averaged over the study area, the increase is 5.4 T 0.2 cm/year, or È60 cm over 11 years, or È54 cm when corrected for isostatic uplift. Winter elevation changes are shown to be linked to the North Atlantic Oscillation.”  “Recent Ice-Sheet Growth in the Interior of Greenland”  h/t The Hockey Schtick

“[S]cientists at the University of Miami say Greenland’s ice is melting so quickly that the land underneath is rising at an accelerated pace.  …

“It’s been known for several years that climate change is contributing to the melting of Greenland’s ice sheet,” Dixon says. “What’s surprising, and a bit worrisome, is that the ice is melting so fast that we can actually see the land uplift in response,” he says. “Even more surprising, the rise seems to be accelerating, implying that melting is accelerating.”

Dixon and his collaborators share their findings in a new study titled “Accelerating uplift in the North Atlantic region as an indicator of ice loss.”  The paper is now available as an advanced online publication, by Nature Geoscience.  …

Melting of Greenland’s ice contributes to global sea level rise. If the acceleration of uplift and the implied acceleration of melting continue, Greenland could soon become the largest contributor to global sea level rise, explains Yan Jiang, Ph.D. candidate at the University of Miami RSMAS and co-author of the study.

“Greenland’s ice melt is very important because it has a big impact on global sea level rise,” Jiang says. “We hope that our work reaches the general public and that this information is considered by policy makers.””  “Greenland Rapidly Rising as Ice Melt Continues

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