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CO2 levels hit new peak at key observatory
2013-05-10 19:57:00| Climate Ark Climate Change & Global Warming Newsfeed
CNN: In some ways, it's just a number, but it's a big number with enormous implications. For the first time, scientists measured an average concentration of atmospheric carbon dioxide of 400 parts per million in Mauna Loa, Hawaii, where the National Oceanic and Atmospheric Administration observatory is located, on Thursday. "Most experts that really study CO2 amounts estimate that we haven't seen that amount of CO2 in our atmosphere in about 3 million years," said J. Marshall Shepherd, climate change...
Atmospheric CO2 Concentrations Surpass 400 PPM Milestone In May 9 Daily Average
2013-05-10 13:35:00| Climate Ark Climate Change & Global Warming Newsfeed
Huffington Post: Atmospheric concentrations of carbon dioxide surpassed a notable milestone this week. They reached a daily average above 400 parts per million, reported NOAA, for the first time in human history. The milestone, hit on May 9, may be symbolic, notes Climate Central, but manmade CO2 emissions from the burning of fossil fuels continue to rise, bringing greater atmospheric warming and exacerbating the effects of climate change. Scientists argue we've loaded the "climate dice" in favor of more...
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Scientists alarmed as CO2 passes threshold
2013-05-10 07:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Politico: The amount of heat-trapping carbon dioxide in the atmosphere passed a symbolic milestone this week, scientists announced Friday, reaching levels that havent prevailed on the Earth since long before human civilization began. The long-expected announcement by the National Oceanic and Atmospheric Administration that CO2 concentrations had finally hit 400 parts per million at a key measuring station in Hawaii means little by itself. But its a sign that time is slipping away to head off or lessen...
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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...
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Global CO2 Levels Set to Pass 400 ppm Milestone
2013-05-01 17:31:00| 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 400 ppm level for the first time in the next few days. Readings at the U.S. 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 April 25. The weekly average stood at 398.5 on Monday. Hourly readings above 400ppm have been recorded six...
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