Global Warming


The fraud of pseudo science based climate change laid naked to the bare eye.

Wealth distribution scheming socialists, and crony big business in bed with big statist government are the big money behind this fraud “science”, and people need to wake up to that fact, and reject their rhetoric and demagoguery.

Mass gains of Antarctic Ice Sheet greater than losses, NASA study reports

October 31, 2015 by Maria-José Viñas
NASA study: Mass gains of Antarctic Ice Sheet greater than losses
A new NASA study says that Antarctica is overall accumulating ice. Still, areas of the continent, like the Antarctic Peninsula photographed above, have increased their mass loss in the last decades. Credit: NASA’s Operation IceBridge

A new NASA study says that an increase in Antarctic snow accumulation that began 10,000 years ago is currently adding enough ice to the continent to outweigh the increased losses from its thinning glaciers.

The research challenges the conclusions of other studies, including the Intergovernmental Panel on Climate Change’s (IPCC) 2013 report, which says that Antarctica is overall losing land ice.

According to the new analysis of satellite data, the Antarctic ice sheet showed a net gain of 112 billion tons of ice a year from 1992 to 2001. That net gain slowed to 82 billion tons of ice per year between 2003 and 2008.

“We’re essentially in agreement with other studies that show an increase in ice discharge in the Antarctic Peninsula and the Thwaites and Pine Island region of West Antarctica,” said Jay Zwally, a glaciologist with NASA Goddard Space Flight Center in Greenbelt, Maryland, and lead author of the study, which was published on Oct. 30 in the Journal of Glaciology. “Our main disagreement is for East Antarctica and the interior of West Antarctica – there, we see an ice gain that exceeds the losses in the other areas.” Zwally added that his team “measured small height changes over large areas, as well as the large changes observed over smaller areas.”

Scientists calculate how much the ice sheet is growing or shrinking from the changes in surface height that are measured by the satellite altimeters. In locations where the amount of new snowfall accumulating on an ice sheet is not equal to the ice flow downward and outward to the ocean, the surface height changes and the ice-sheet mass grows or shrinks.

But it might only take a few decades for Antarctica’s growth to reverse, according to Zwally. “If the losses of the Antarctic Peninsula and parts of West Antarctica continue to increase at the same rate they’ve been increasing for the last two decades, the losses will catch up with the long-term gain in East Antarctica in 20 or 30 years—I don’t think there will be enough snowfall increase to offset these losses.”

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And there’s more!

Arctic snow not darkening due to soot, dust, study finds

October 31, 2015
Arctic snow not darkening due to soot, dust, Dartmouth-led study finds
Dartmouth Adjunct Assistant Professor Chris Polashenski and his colleagues found that degrading satellite sensors, not soot or dust, are responsible for the apparent decline in reflectivity of Arctic snow. Credit: Chris Polashenski

For millennia, Greenland’s ice sheet reflected sunlight back into space, but satellite measurements in recent years suggest the bright surface is darkening, causing solar heat to be absorbed and surface melting to accelerate. Some studies suggest this “dirty ice” or “dark snow” is caused by fallout from fossil fuel pollution and forest fires.

But a new Dartmouth-led study shows that degrading satellite sensors, not soot or dust, are responsible for the apparent decline in of inland across northern Greenland. The study’s results suggest the ice sheet hasn’t lost as much reflectivity as previously thought, and that black carbon and dust concentrations haven’t increased significantly and are thus not responsible for darkening on the upper ice sheet.

The findings, which contradict anecdotal observations and earlier scientific studies, appear in the journal Geophysical Research Letters. A PDF of the study is available on request.

Observations suggest the Greenland Ice Sheet’s albedo – or its ability to reflect the sun’s energy back into the atmosphere—has declined considerably since 2001 due to black carbon and dust from increased industrialization and across the northern hemisphere. The apparent decline is greatest around the ice sheet’s edges, but it also is occurring in the high elevation interior known as the dry snow zone, where the reflectivity is effectively reset each winter by new snowfall.

Two properties dominate reflectivity in dry snow – the size of snow grains, which become larger and more absorbent as they melt, and the presence of dark impurities that absorb the sun’s energy, predominantly black carbon and mineral dust, which also cause the snow to melt faster. Snow high on the Greenland Ice Sheet typically has black carbon concentrations too low to significantly affect its reflectivity, but in 2012 large wildfires in Canada and Siberia and favorable winds may have combined to trigger record surface melting of the ice sheet that year.

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One Response

  1. This is not Global Warming. The science has moved on and settled on Climate Change. Greater ice packs shows clearlty that Climate Change is a theory that works every time.

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