11 November 2015, Other Words, Who Can Follow This Climate Leader? President Obama rejected the Keystone XL pipeline while backing increased oil, gas, and coal production. Remember that scene in the Wizard of Oz when Dorothy hits a fork in the Yellow Brick Road? As she stands there stumped, a friendly character who will accompany her to the Emerald Palace pipes up. “Pardon me, that way is a very nice way,” the Scarecrow advises as he points in one direction. “It’s pleasant down that way too,” he adds, now pointing in the other. Then the Scarecrow crosses his straw-stuffed arms and unhelpfully declares, “Of course people do go both ways.” President Barack Obama’s climate leadership is as hard to follow as the Scarecrow’s directions. After seven years of waffling, Obama finally rejected the Keystone XL pipeline. If completed, this conduit would have moved more than 800,000 barrels a day of filthy oil mined from the Canadian tar sands through Nebraska and five other states to refineries along the Gulf Coast. Rejecting the $8 billion pipeline early in his first term would have been bold. But Obama dallied. He only stopped it once the thing made no financial sense because of low oil prices and similar infrastructure that rendered the project unnecessary. Making this move now, on the eve of global climate talks in Paris, was merely expedient. He made his choice sound like a bigger deal than it was anyway. “America is now a global leader when it comes to taking serious action to fight climate change,” he asserted. “And frankly, approving this project would have undercut that global leadership.” So, what’s the state of that leadership? On the one hand, the Obama administration has taken steps to reduce the nation’s reliance on oil, gas, and coal. Its Clean Power Plan will step up the ongoing retirement of coal-fired power plants as it cuts carbon pollution. The federal government is also phasing in higher fuel-efficiency standards while throwing some weight behind renewable-energy initiatives. All the while, this White House has also leased a growing amount of federal land to coal-mining companies and encouraged the nation’s spiking oil and natural gas production. Obama’s inherently contradictory “all-of-the-above” energy policy supports the dangerous practice of hydraulic fracturing — commonly known as fracking — that pumps vast amounts of toxic chemicals underground, imperiling drinking water. Read More here
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11 November 2015, Climate News Network, West Antarctic ice cascades towards crisis. Scientists warn that continued ocean warming will lead to ice loss in the Amundsen Sea region that could raise sea levels by three metres. It wouldn’t take much to precipitate the complete collapse of the West Antarctic ice sheet, according to new research. Just a few more decades of ocean warming would be enough to destabilise the relatively small region of ice by the Amundsen Sea − starting a cascade of slipping and sliding that would tip enough ice into the ocean to raise sea levels by three metres. The loss of ice would continue for centuries. Two scientists at the Potsdam Institute for Climate Impact Research (PIK) in Germany report in the Proceedings of the National Academy of Sciences that they wanted to take a look at the long-term future of the mass of south polar ice that has been worrying researchers for decades. Planetary temperatures The West Antarctic ice sheet has already been pronounced as being at the point of no return. Scientists have calculated that, were the world ever to burn all its fossil fuels, thus increasing levels of atmospheric carbon dioxide and stoking up planetary temperatures, that would be enough to melt the entire Antarctic continent and raise sea levels by 60 metres. But one of those studies focused on what is happening now; the second looked thousands of years ahead. Read More here
10 November 2015, Science Daily, Geophysics could slow Antarctic ice retreat. Gravitational effects, variations in Earth structure could damp rise in global sea levels. The anticipated melting of the massive West Antarctic Ice Sheet could be slowed by two big factors that are largely overlooked in current computer models, according to a new study. The findings, published online in Nature Communications, suggest that the impact on global sea levels from the retreating ice sheet could be less drastic — or at least more gradual — than recent computer simulations have indicated. Over the past year, numerous studies have warned that parts of the West Antarctic Ice Sheet are on the verge of a runaway retreat. Just last week a high-profile research paper forecast that this could lead eventually to a rise in global sea levels of as much as three metres. The authors of the new Nature Communications paper, however, focus on two geophysical elements that they say aren’t adequately reflected in computer simulations for this region: the surprisingly powerful gravitational pull of the immense ice sheet on surrounding water, and the unusually fluid nature of the mantle beneath the bedrock that the ice sits on. “The fate of the polar ice sheets in a warming world is a major concern for policy makers — and attention is rightly focused on the importance of restraining CO2 emissions and preparing for rising sea levels,” says lead author Natalya Gomez, an assistant professor of Earth and Planetary Sciences at McGill University in Montreal. “But our study shows that for Antarctica, in particular, computer models also need to take into account how gravitational effects and variations in Earth structure could affect the pace of future ice-sheet loss.” Read More here
10 November 2015, The Guardian, New insect arrivals signal radical climate change – we can’t say we’ve not been warned. The exotic species colonising the south coast are the experts when it comes to adapting and surviving. We should learn from them. Something stunning happened last week, which has never before occurred in Britain in November: a subtropical butterfly, the long-tailed blue, was seen flying on the south coast of England. Another unprecedented event took place one August evening: a volunteer at the Dungeness bird observatory was strolling home from the pub when he was transported to summer holidays on Mediterranean verandas – he heard the nocturnal whirring of tree crickets. Hundreds of these warmth-loving insects have now been found breeding in Britain for the first time. Exceptional insects are the new normal. The long-tailed blue is a common sight across Africa, south Asia and Australia. Very occasionally – in 1945 and again in 1990 – warm winds push a couple of dozen to Britain. In 2013, however, more than 100 individuals were spotted between Bognor and Dover. This year has seen another 60 mostly British-born specimens emerging spectacularly late in the year for any butterfly, let alone a subtropical creature. We struggle to act on climate change because it involves restraining consumption – of fossil fuel – and we as a species find it hard to practise restraint. We are also struggling because arguments focused on parts per million of CO2 are abstract and remote from real experience. Insects could help us realise just how radically our climate is changing. Forgive an obvious animal cliche, but they are the canary in the coal mine. Along with tree bumblebees, another very visible newcomer in Britain, we might describe them as the first climate refugees to reach our shores. Read More here