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9 Votes
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Greenhouse Gases, Carbon Dioxide And Methane, Rise Sharply In 2007
News Type: Event — Seeded on Thu Apr 24, 2008 8:00 AM EDT
Article Source: Science Dailyadvertisement
Last year alone global levels of atmospheric carbon dioxide, the primary driver of global climate change, increased by 0.6 percent, or 19 billion tons. Additionally methane rose by 27 million tons after nearly a decade with little or no increase. NOAA scientists released these and other preliminary findings today as part of an annual update to the agency's greenhouse gas index, which tracks data from 60 sites around the world.
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 | Scientists say accumulation of greenhouse gases accelerating | Associated Press | Wed Apr 23 | 1 |
 | BBC NEWS | Science/Nature | Hints of methane's renewed rise | BBC News | Thu Apr 24 | 0 |
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{"commentId":1727964,"authorDomain":"mridulchadha"}
Excerpt:
Viewed another way, last year's carbon dioxide increase means 2.4 molecules of the gas were added to every million molecules of air, boosting the global concentration to nearly 385 parts per million (ppm). Pre-industrial carbon dioxide levels hovered around 280 ppm until 1850. Human activities pushed those levels up to 380 ppm by early 2006.
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- 3 votes
#1 - Thu Apr 24, 2008 8:01 AM EDT{"commentId":1728063,"authorDomain":"backroadsbubba"}
Keep on planting trees.
{"commentId":1728063,"threadId":"254860","contentId":"1449833","authorDomain":"backroadsbubba"}
- 1 vote
{"commentId":1728971,"authorDomain":"npat"}
Atmospheric methane can be expected to continue to increase for centuries. Fluctuations in the rate of increase is likely. Methane has higher greenhouse warming potential than CO2 and is converted to CO2 with time. GW skeptics have argued that CO2 peaks have followed global temperature peaks for some past episodes of global warming. Skeptic's misunderstandings can be explained by their failures to comprehend the CO2-methane-warming feedbacks.
{"commentId":1728971,"threadId":"254860","contentId":"1449833","authorDomain":"npat"}
#2 - Thu Apr 24, 2008 12:11 PM EDT{"canLink":false,"threadId":"254860","isPrivate":false}
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