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We're About to Pass a Disheartening New Climate Change Milestone
2013-05-07 21:25:00| Climate Ark Climate Change & Global Warming Newsfeed
Smithsonian: For the first time in human history, later this month the world`s atmospheric levels of carbon dioxide will likely exceed 400 parts per million, according to a study conducted by the Scripps Institution of Oceanography. The researchers monitor CO2 concentrations from a station in Hawaii, and those levels usually peak in May. Right now, levels are teetering at 399 ppm. If they do not exceed 400 ppm this year, the researchers say, they almost certainly will next year. In March 1958, when the first...
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Cyclone Power Technologies completes 4th milestone under US Army engine development program
2013-05-06 13:30:22| Green Car Congress
Tags: power
development
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Earth's greenhouse gas levels approach 400 ppm milestone
2013-05-02 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
LA Times: The ratio of carbon dioxide in Earth's atmosphere is flirting with 400 parts per million, a level last seen about 2.5 million to 5 million years ago, according to the Scripps Institution of Oceanography at UC San Diego. The Institution this week launched a daily Keeling curve update, showing the saw-toothed upward diagonal of rising carbon dioxide levels since the late 1950s. Isolated measurements have peaked at above 400 parts per million in the Arctic, but scientists are more alarmed at steady...
Milestone Nears on Curve Charting the Human Imprint on the Atmosphere
2013-05-02 13:54:00| Climate Ark Climate Change & Global Warming Newsfeed
New York Times: For hundreds of thousands of years preceding the industrial revolution, the concentration of the greenhouse gas carbon dioxide in the atmosphere didnt exceed 280 parts per million. Now it is poised to pass 400 parts per million, thanks to the burst of fossil fuel combustion and forest clearing thats accompanied humanitys recent growth spurt. That shift was noticed thanks to decades of work by Charles David Keeling of the Scripps Institution of Oceanography and more recently his son Ralph. (Keelings...
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Global CO2 Levels Approach Worrisome Milestone
2013-05-02 01:19:00| Climate Ark Climate Change & Global Warming Newsfeed
Scientific American: Near the moonscape summit of the Mauna Loa volcano in Hawaii, an infrared analyzer will soon make history. Sometime in the next month, it is expected to record a daily concentration of carbon dioxide in the atmosphere of more than 400 parts per million (p.p.m.), a value not reached at this key surveillance point for a few million years. There will be no balloons or noisemakers to celebrate the event. Researchers who monitor greenhouse gases will regard it more as a disturbing marker of humanity's...
Tags: global
levels
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