De Guardian bericht:
'Surge in carbon levels raises fears of runaway warming.
David Adam Environment correspondent.
UPDATE: The US National Oceanic and Atmospheric Administration (Noaa) has now told us that the story below is based on preliminary data for December, which it should not have published. It has withdrawn the data pending further analysis. As a result, the provisional annual growth rate for 2006 displayed on the Noaa website now does not include December, which means it is now lower than the 2.6ppm we reported. Pieter Tans, the scientist in charge of the data, said: "It doesn't affect the trend, there is definitely something there. CO2 growth in 2006 was still higher than average and four of the last five years have been higher than average."
Carbon dioxide is accumulating in the atmosphere much faster than scientists expected, raising fears that humankind may have less time to tackle climate change than previously thought.
New figures from dozens of measuring stations across the world reveal that concentrations of CO2, the main greenhouse gas, rose at record levels during 2006 - the fourth year in the last five to show a sharp increase. Experts are puzzled because the spike, which follows decades of more modest annual rises, does not appear to match the pattern of steady increases in human emissions.
At its most far reaching, the finding could indicate that global temperatures are making forests, soils and oceans less able to absorb carbon dioxide - a shift that would make it harder to tackle global warming. Such a shift would worsen even the gloomy predictions of the Stern Review which warned that we had little over a decade to tackle rising emissions to avoid the worst effects of climate change.
David Hofmann of the US National Oceanic and Atmospheric Administration (Noaa), which published the figures, said: "Over this last decade the growth rates in carbon dioxide have been higher. I don't think we can plausibly say what's causing it. It's something we're going to look at."
Peter Cox, a climate change expert at Exeter University, said: " The concern is that climate change itself will affect the ability of the land to absorb our emissions." At the moment around half of human carbon emissions are reabsorbed by nature but the fear among scientists is that increasing temperatures will work to reduce this effect.'
Lees verder: http://environment.guardian.co.uk/climatechange/story/0,,1994071,00.html
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