Greenhouse Gas Levels About to Hit Bad Milestone
Carbon dioxide ratio in atmosphere close to symbolic 400 parts per million
By John Johnson, Newser Staff
Posted May 1, 2013 7:07 PM CDT
Updated May 4, 2013 6:50 PM CDT
Smoke pours out of chimneys at a cement plant in Binzhou city, in eastern China's Shandong province, earlier this year.   (AP Photo)

(Newser) – We're probably going to hear a lot about the "Keeling curve" and references to "400 parts per million" in the coming weeks. The curve measures the ratio of carbon dioxide in the Earth's atmosphere, and that ratio is about to cross the 400-ppm level for the first time in, oh, 3 million to 5 million years, reports the LA Times. Scientists at the Scripps Institution of Oceanography are now offering a daily look at the rising number at this website, or you can follow along via Twitter here.

"I wish it weren't true, but it looks like the world is going to blow through the 400-ppm level without losing a beat," says a Scripps geochemist. "At this pace we'll hit 450ppm within a few decades." Which will mean a hotter planet and rising sea levels, says another of the scientists. “Our dumping of heat and CO2 into the ocean is like making investments in a pollution bank."

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Showing 3 of 263 comments
Estrus
May 27, 2013 8:15 PM CDT
scripts neesd to move their test equipment from an active volcano, so they can get an actual accurate reading, try placing one at the north pole, south pole, intersect equator / date line then space 3 places equally on equator. wht not place one in the middle of death valley, amazon, sahara desert and siberia, then see what readings a liberal institute gets, they get grants from the state of California, can you guess what results they get!
I_hate_to_say
May 7, 2013 7:20 PM CDT
If you doubt that paid Koch Brothers trolls make a beeline for internet discussions such as this, please check out the groundbreaking whistle blowing book "Climate Cover-up." http://www.desmogblog.com/climate-cover-up The book documents one of the most disgusting stories you will ever read about corporate disinformation -- a campaign of lies, character assassination and propaganda like the tobacco companies waged for decades. It amounts to a conspiracy against humanity -- an intergenerational crime. The professional trolls really don't have much work to do on newser stories like this, because there's such a high percentage of deluded and delusional wingnuts and freaks.
iamcurious
May 5, 2013 2:55 PM CDT
Climate change has become a religion, embraced by it's devotees with great fervor. The only science behind it is political science. The agenda is one world government and total subjugation of mankind.