#co2_emissions

Carbon storage hopes rise again - Climate News Network

▻http://www.climatenewsnetwork.net/carbon-storage-hopes-rise-again

By Tim Radford

http://www.climatenewsnetwork.net/wp-content/uploads/2015/04/CROP-tree.jpg

Carbon capture and storage, if it proved possible, would help to make the main greenhouse gas harmless. American scientists say they are making progress.

LONDON, 20 April, 2015 – Two groups of US scientists are exploring new ways of capturing carbon dioxide from the atmosphere. One technology mimics the tree by using artificial photosynthesis. The other exploits a membrane that is a thousand times more efficient than any tree.

Although the nations of the world agreed in 2009 to attempt to limit the global warming temperature rise this century to no more than 2°C above pre-industrial levels, colossal quantities of the greenhouse gas carbon dioxide are still being emitted into the atmosphere.

#climat #co2 #co2_emissions #carbone

Forests can soak up a third of carbon emissions - Climate News Network

▻http://www.climatenewsnetwork.net/forests-can-soak-up-a-third-of-carbon-emissions

Forests can soak up a third of carbon emissions

By Alex Kirby

http://www.climatenewsnetwork.net/wp-content/uploads/2015/04/CROP-indonesia-logging.jpg

Report commissioned by Prince Charles’s charity says protecting tropical forests could enable them to absorb billions of tonnes of the Earth’s emissions of carbon.

LONDON, 11 April, 2015 − Looking after the world’s tropical forests would be worthwhile in its own right, for the sake of their human and animal inhabitants and their wider effects on the natural world.

But researchers say it would also have a significant bonus. Properly cared for, the forests could cancel out between a quarter and a third of the planet’s carbon emissions.

#forêt #co2_emissions #climat

Drought ‘makes Amazonia emit carbon’ | Climate News Network

▻http://www.climatenewsnetwork.net/2014/03/drought-makes-amazon-emit-carbon

From « sink » to « emitter »...

By Alex Kirby

Drought and fire can dry the Amazon forest to the point where instead of storing carbon it releases it to the atmosphere, several studies suggest.

LONDON, 5 March – Scientists think there is growing evidence to show that the Amazon forest is less effective at absorbing carbon dioxide than previously thought. Instead, they say, it may often be releasing huge quantities of CO2 to the atmosphere, acting not as a carbon sink but as a source.

Their reasons for this potentially significant rethink were published in two reports in the journal Nature. The first describes the results of researchers who sampled the amount of carbon in the air at four points over the Amazon, to build up a more comprehensive picture of the forest’s response to both light and water.

#climat #amazonie #co2_emissions