"ALL CAPS IN DEFENSE OF LIBERTY IS NO VICE."

Tuesday, July 29, 2008

MELTING GREENLAND?

The NYT article below is so wrong on so many counts that it is difficult to know where to start in deconstructing it. It has basically swallowed Al Gore's poop whole and yet shows no sign of indigestion. Monckton tells me that he has a comprehensive demolition of it coming out in Science & Public Policy so I will at this stage just append a few desultory comments at the foot of the article

Greenland's ice sheet represents one of global warming's most disturbing threats. The vast expanses of glaciers - massed, on average, 1.6 miles deep - contain enough water to raise sea levels worldwide by 23 feet. Should they melt or otherwise slip into the ocean, they would flood coastal capitals, submerge tropical islands and generally redraw the world's atlases. The infusion of fresh water could slow or shut down the ocean's currents, plunging Europe into bitter winter.

Yet for the residents of the frozen island, the early stages of climate change promise more good, in at least one important sense, than bad. A Danish protectorate since 1721, Greenland has long sought to cut its ties with its colonizer. But while proponents of complete independence face little opposition at home or in Copenhagen, they haven't been able to overcome one crucial calculation: the country depends on Danish assistance for more than 40 percent of its gross domestic product. "The independence wish has always been there," says Aleqa Hammond, Greenland's minister for finance and foreign affairs. "The reason we have never realized it is because of the economics."

Climate change has the power to unsettle boundaries and shake up geopolitics, usually for the worse. In June, the tiny South Pacific nation of Kiribati announced that rising sea levels were making its lands uninhabitable and asked for help in evacuating its population. Bangladesh, low-lying, crowded and desperately impoverished, is watching the waves as well; a one-yard rise would flood a seventh of its territory. But while most of the world sees only peril in the island's meltwater, Greenland's independence movement has explicitly tied its fortunes to the warming of the globe.

The island's ice cover has already begun to disappear. "Changes in the ocean eat the ice sheet from underneath," says Sarah Das, a glaciologist at the Woods Hole Oceanographic Institution in Massachusetts. "Warmer water causes the glaciers to calve and melt back more quickly." Hunters who use the frozen surface of the winter ocean for hunting and travel have found themselves idle when the ice fails to form. The whales, seals and birds they hunt have begun to shift their migratory patterns. "The traditional culture will be hard hit," says Jesper Madsen, director of the department of Arctic environment at the University of Aarhus in Denmark. "But from an overall perspective, it will have a positive effect." Greenland's fishermen are applauding the return of warm-water cod. Shops in the island's capital have suddenly begun to offer locally produced potatoes and broccoli - crops unimaginable a few years earlier.

But the real promise lies in what may be found under the ice. Near the town of Uummannaq, about halfway up Greenland's coast, retreating glaciers have uncovered pockets of lead and zinc. Gold and diamond prospectors have flooded the island's south. Alcoa is preparing to build a large aluminum smelter. The island's minerals are becoming more accessible even as global commodity prices are soaring. And with more than 80 percent of the land currently iced over, the hope is that the island has just begun to reveal its riches.

Offshore, where the Arctic Ocean is rapidly thawing, expectations are even higher. The U.S. Geological Survey estimates that Greenland's northeastern waters could contain 31 billion barrels of undiscovered oil and gas. On the other side of the island, the waters separating it from Canada could yield billions of barrels more. And while Greenland is still considered an oil exploration frontier, Exxon Mobil, Chevron, Canada's Husky Energy and Cairn Energy and Sweden's PA Resources are aleady ramping up exploration.

Source

The claims above show that the author needs to learn some history, climatology, geology, glaciology and oceanography. No such problems happened 1,000 years ago when the Vikings farmed coastal parts of Greenland that are now under ice. Why was the place given the name "Greenland" in the first place?

The bulk of the Ice Sheet sits in a depression in the ground so it cannot "slip" into the ocean. Complete melting of the ice sheet would require global temperature to rise by more than 3 degrees C and to stay that high for thousands of years. Decades have passed since climatologists disproved the urban myth that the Gulf Stream keeps Europe warm: the jet streams produce that warming. The ocean circulation is powered by winds that get their energy from the Sun so they cannot "shut down" unless the Sun disappears.

The scientific studies of up to a year ago that refute the idea of a Greenland melt

The IPCC and various independent sources give estimates of sea-level rise based on recent Greenland rates of melting ranging from zero to little more than ONE INCH over the current century. Only the Gory brain and the NYT talk of 23 feet.

If there is glacial shrinkage in Greenland it is more likely due to global cooling than global warming. It's just basic physics but Greenies ignore that: Since the temp of most glaciated areas is well below 0 degrees Celsius, the major determinant of glacial mass is precipitation. And what drives precipitation? Sea surface temperature! Warm seas give off more evaporation -- and hence precipitation -- and cool seas give off less. So lesser glacial mass and hence lesser precipitation implies global COOLING! And since the world has in fact been cooling for nearly two years now, some glacial shrinkage could be expected as a result of that.



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2 comments:

Think! said...

Indeed we need a quick ice age here in Europe... It could perhaps solve some of our migrations problems...

I just can´t imagine a Somali killing seals for survival :o]

Mark Wadsworth said...

Nice fisking. I'm here via somebody's google search on 'global cooling' which only produced 78,ooo hits (you were one above me).

The Somalis would rather kill other human beings than do proper hunting. More lucrative.