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Carbon Dioxide Level Passes Long-Feared Milestone
2013-05-10 12:50:00| Climate Ark Climate Change & Global Warming Newsfeed
New York Times: The level of the most important heat-trapping gas in the atmosphere, carbon dioxide, has passed a long-feared milestone, scientists reported Friday, reaching a concentration not seen on the earth for millions of years. Scientific instruments showed that the gas had reached an average daily level above 400 parts per million just an odometer moment in one sense, but also a sobering reminder that decades of efforts to bring human-produced emissions under control are faltering. The best available...
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With carbon dioxide approaching a new high, scientists sound the alarm
2013-05-07 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
International Herald Tribune: If uncertainty runs rampant in the global-warming debate, it is in part because scientific data is often too complex to be well understood by anyone but climate scientists. This month, however, the world is likely to reach a scientific milestone that appears impressively scary even to those with only a cursory knowledge of climate science. For the first time in human history, atmospheric carbon dioxide levels will surpass 400 parts per million, according Scripps Institution of Oceanography,...
Carbon dioxide emissions reachest highest point in three million years
2013-04-30 10:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Irish Times: As global carbon dioxide, emissions teetered on the threshold of 400 parts per million (PPM) for the first time in three million years, delegates from countries all over the world yesterday started another round of talks on how to tackle climate change. Hawaiis Mauna Loa Observatory recorded CO2 levels of 399.72ppm last week. It looks like the world is going to blow through the 400ppm level without missing a beat, said Ralph Keeling of the US Scripps Institution of Oceanography, which runs...
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Carbon dioxide concentration to hit record levels this week
2013-04-29 20:44:00| Climate Ark Climate Change & Global Warming Newsfeed
Guardian: The concentration of carbon dioxide in the atmosphere has reached 399.72 parts per million (ppm) and is likely to pass the symbolically important 400ppm level for the first time in the next few days. Readings at the US government's Earth Systems Research laboratory in Hawaii, are not expected to reach their 2013 peak until mid May, but were recorded at a daily average of 399.72ppm on 25 April. The weekly average stood at 398.5 on Monday. Hourly readings above 400ppm have been recorded six times...
Brazil: Experiment aims to steep rainforest in carbon dioxide
2013-04-23 07:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Nature: One of the wild cards in climate change is the fate of the Amazon rainforest. Will it shrivel as the region dries in a warming climate? Or will it grow even faster as the added carbon dioxide in the atmosphere spurs photosynthesis and allows plants to use water more efficiently? A dying rainforest could release gigatonnes of carbon into the atmosphere, accelerating warming; a CO2-fertilized forest could have the opposite effect, sucking up carbon and putting the brakes on climate change. Climate...
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