IEA: 2 degree Rise May Be An Impossible Goal
IEA stokes doubts over world's climate fight
Reuters News Service, Nov. 12, 2008
LONDON (Reuters) - The world will have to bet on extreme measures to avoid serious global warming, the International Energy Agency said on Wednesday, adding to growing worries that governments have under-estimated the problem.
The world will have to suck greenhouse gases out of the atmosphere because it was too late to rely on gradual curbs in heat-trapping greenhouse gas emissions, it said.
The energy adviser to 28 rich countries detailed two paths for limiting warming to 2 and 3 degrees Celsius respectively, which would both require huge annual investments to deploy fossil fuels alternatives.
"Both scenarios imply that net greenhouse gas emissions turn negative -- carbon absorption exceeds gross emissions -- towards the end of the century," said the IEA's set-piece annual energy report.
That could involve the deployment of an untested technique to pump underground carbon dioxide produced from burning vegetation, using carbon capture and storage, and by planting more forests, the report added.
If the world carried on as normal without taking new steps to fight climate change temperature would rise in the long-term by up to 6 degrees.
Above 2 degrees warming, "hundreds of millions of people would face reduced water supplies," and above 3 degrees food production worldwide would be "very likely to decrease," a U.N. panel of climate scientists said last year.
Limiting warming to no more than 2 degrees would be especially expensive because it would involve scrapping and replacing dirty power plants at a cost of about $3.6 trillion from 2010-2030, the IEA report said.
That compares with global efforts in recent weeks to shore up the world economy at a cost of about $4 trillion.
A view that more than 2 degrees of global warming is inevitable has gained ground.
Greenhouse gases are already at high enough concentrations in the air to stoke that amount of warming -- except that smoke and other pollution are blocking out the sun's rays, said Hans Joachim Schellnhuber, director of the Potsdam Institute for Climate Impact research.
"This is masking two thirds of the global warming. We already have 2.4 degrees of warming in the system," he told Reuters on Tuesday.
On the positive side -- regarding the cost of the climate fight -- limiting greenhouse gas emissions from burning fossil fuels will also cut costly oil consumption.
Partly as a result of recent oil price rises, global spending on oil had quadrupled to 4 percent of global economic output (GDP) in 2007 compared to 1 percent in 1998, and that would rise to 5 percent, the IEA said.
"The only time the world has ever spent so much of its income on oil was in the early 1980s," the IEA said.
Another cost saving from the climate fight will be the avoided damage from droughts, floods and sea level rise, which British economist Nicholas Stern famously said could be 20 times the cost of curbing greenhouse gases.
"We start in a difficult place," Stern told Reuters on Tuesday. "The (pollution) in the atmosphere, give us time to bring that (CO2 in the atmosphere) back down to the kind of levels ... that are consistent with a 50/50 chance of holding the overall temperature increase to 2 degrees centigrade."
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EU Global Warming Target May Not Be Possible -- IEA
Planetark.org, Nov. 7, 2008
LONDON - A European Union target to limit warming of the planet to no more than 2 degrees Celsius may not be technically achievable, the International Energy Agency said in a report to be published next week.
"Even leaving aside any debate about the political feasibility ... it is uncertain whether the scale of the transformation envisaged is even technically achievable, as the scenario assumes broad development of technologies that have not yet been proven," said the IEA's World Energy Outlook.
That analysis referred to a target to limit global warming to no more than 2 degrees.
The implication is that the world may have to accept higher warming limits than targeted at present, for example by the EU since 1996, and prepare for effects which scientists say will include more droughts, floods and rising seas.
A United Nations climate panel said last year that above 3 degrees "hundreds of millions of people (would be) exposed to increased water stress (shortages)."
Stronger action to fight climate change involves rapidly escalating costs, for example to deploy expensive, untested technologies such as carbon scrubbers and even to leave stranded assets -- where high-carbon coal plants, for example, have to be closed prematurely.
"It will be necessary to face up to the reality of the cost of early capital retirement if radical measures are to be taken ... to deliver deep cuts in emissions," the IEA said in its report, due to be published on Nov. 12. The IEA is energy adviser to 28 industrialised countries.
The IEA analysed two scenarios to limit warming to 2 degrees and 3 degrees, and estimated that these would cost about $180 and $90 per tonne of carbon dioxide emissions respectively.
The present EU carbon price is about 18 euros (US$23.20), and accounts for about one fifth of European consumer electricity prices, say analysts.
"The scale of the challenge ... is immense," the IEA said of a 2 degrees target. "The technology shift, if achievable, would certainly be unprecedented in scale and speed of deployment."
The EU Council of Ministers stated in 1996 that it "believes that global average temperatures should not exceed 2 degrees above pre-industrial level."