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Tag: carbon dioxide
Carbon dioxide reaches levels never seen by humans
2013-05-11 12:16:00| Climate Ark Climate Change & Global Warming Newsfeed
Greenpeace: The levels of the carbon dioxide in the atmosphere has reached 400 parts per million for the first time in human history. The last time levels were this high global average temperatures eventually reached 3 or 4C° higher than now, the polar regions were up to 10C° warmer than today the Greenland and Antarctic ice sheets were smaller and Sea level ranged between five and 40 meters (16 to 131 feet) higher than today. There are two reasons to be seriously worried by this year's CO2 measurements...
Tags: levels
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Carbon dioxide in atmosphere at highest level for 5 million years
2013-05-11 10:29:00| Climate Ark Climate Change & Global Warming Newsfeed
Independent: The concentration of carbon dioxide in the atmosphere has breached the symbolically important level of 400 parts per million (ppm) for the first time in 5 million years after rising at its fastest rate since records began. Average daily CO2 levels jumped by 2.74 ppm in the first 17 weeks of 2013, compared to last year, the biggest increase since the benchmark monitoring stations high on the Hawaiian volcano of Mauna Loa began taking measurements in 1958. Experts blamed most of the increase...
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400 ppm: Carbon dioxide in the atmosphere reaches prehistoric levels
2013-05-10 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Scientific American: On May 2, after nightfall shut down photosynthesis for the day in Hawaii, carbon dioxide levels in the atmosphere touched 400 parts-per-million there for the first time in at least 800,000 years. Near the summit of volcanic Mauna Loa--where a member of the Keeling family has kept watch since 1958--sensors measured this record through sunrise the following day. Levels have continued to dance near that benchmark in recent days, registering above 400 ppm for the first time in eons after midnight on...
Tags: levels
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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...
Tags: level
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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,...
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