bioenergy

Carbon overload Carbon in atmosphere and amount in fossil fuel reserves

That number was 52 billion tonnes of CO2 in 2012

Only when this number declines will we know we’re making the shift to climate protection

By Stephen Leahy

UXBRIDGE, Canada, Dec 17 2012 (IPS)

The most important number in history is now the annual measure of carbon emissions. That number reveals humanity’s steady billion-tonne by billion-tonne march to the edge of the carbon cliff, beyond which scientists warn lies a fateful fall to catastrophic climate change.

With the global total of climate-disrupting emissions likely to come in at around 52 gigatonnes (billion metric tonnes) this year, we’re already at the edge, according to new research.

To have a good chance of staying below two degrees C of warming, global emissions should be between 41 and 47 gigatonnes (Gt) by 2020, said Joeri Rogelj, a climate scientist at Switzerland’s Institute for Atmospheric and Climate Science in Zurich.

“Only when we see the annual global emissions total decline will we know we’re making the shift to climate protection,” Rogelj told IPS.

Making the shift to a future climate with less than two degrees C of warming is doable and not that expensive if total emissions peak in the next few years and fall into the 41-47 Gt “sweet spot” by 2020, Rogelj and colleagues show in their detailed analysis published Sunday in the journal Nature Climate Change.

The study is the first to comprehensively quantify the costs and risks of emissions surpassing critical thresholds by 2020. Continue reading →

…the truth about the “big lie” that burning wood for energy is carbon- neutral

By Stephen Leahy

BERLIN, Jun 7, 2010 (IPS)

Europe seems hell-bent on burning the world’s forests for bioenergy, even as it offers billions of euros to save them, critics say.

The dirty secret of Europe’s vaunted green energy revolution is the fact that 68.5 percent of its renewable energy portfolio comes from biofuels and burning wood for energy, according to a report released in Brussels last week. Modern technologies like wind and solar get all the press, but burning wood is well, prehistoric.

“We estimate at least 27 million tonnes of wood biomass will be needed annually to supply planned power stations in the UK (United Kingdom) alone,” said Almuth Ernsting from Biofuelwatch, a British NGO focused on bioenergy issues.

In a story broken by IPS last fall, at least one million hectares of forest annually will be needed to feed the dozens of planned wood-fired power plants in Britain alone. The Netherlands is already burning one million tonnes of wood. Germany is up 23 million cubic meters (16.5 million tonnes) – mostly imported – and plans to double this figure by 2020, said the report co-published with the Global Justice Ecology Project, “Wood Based Bioenergy: The Green Lie”.

“It’s getting pretty scary,” Ernsting, a report co-author, told IPS. Continue reading →