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Climate Collision Course: CO2 Levels About to Hit 400 PPM

Environment  (tags: climate-change, CO2emissions, ecosystems, endangered, environment, globalwarming, habitatdestruction, healthconditions, politics, pollution, protection, trees, water, Sustainabililty, wildlife )

- 1821 days ago -
Concentrations of the greenhouse gas carbon dioxide will likely reach 400 parts per million (ppm) for first time in human history, say scientists at the Scripps Institution of Oceanography, -->

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Kit B (276)
Monday April 29, 2013, 7:11 pm
Concentrations of CO2 are nearing 400 ppm for the first time in human history. (Graph Credit: Scripps Institution of Oceanography)

Climate Collision Course: CO2 Levels About to Hit 400 PPM

In a first in human history, "it looks like the world is going to blow through the 400-ppm level without losing a beat."

The world is likely days away from a "sobering milestone" in our planetary history.

Concentrations of the greenhouse gas carbon dioxide will likely reach 400 parts per million (ppm) for first time in human history, say scientists at the Scripps Institution of Oceanography, and unless drastic action is taken, we're on track to hit 450 ppm in the near future.

"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," said Scripps geochemist Ralph Keeling, whose father Charles David (Dave) Keeling began the "Keeling Curve" to track daily CO2 levels recorded at Mauna Loa Observatory.

The last time the greenhouse gases were at 400 ppm was likely the Pliocene epoch, between 3.2 million and 5 million years ago.

The current reading is at 399.72 ppm -- far past the 350 ppm level many, including noted climate scientist James Hansen, have warned is the upper safe limit before the planet hits a tipping point.

"At this pace we'll hit 450 ppm within a few decades," warned Keeling. Indeed, the rate of rise of CO2 over the past century is "unprecedented."

The figure should serve as a call to act on the deadly emissions caused by our fossil fuel addiction, the scientists say.

"The 400-ppm threshold is a sobering milestone, and should serve as a wake up call for all of us to support clean energy technology and reduce emissions of greenhouse gases, before it's too late for our children and grandchildren," said Tim Lueker, an oceanographer and carbon cycle researcher and part of the Scripps CO2 Group.

To keep a watch on the daily levels, you can visit The Keeling Curve website or follow the daily updates via Twitter.

By: Andrea Germanos, staff writer | Common Dreams |

JL A (281)
Monday April 29, 2013, 7:22 pm
So scary--but so many in power aren't waking up and continue their sleepwalking pretending they are functioning at full capacity.

lee e (114)
Tuesday April 30, 2013, 2:11 pm
We have Nothing to worry about - the EPA has already said that there is no harm to us humans - if fracking continues - not to mention the newest report that says that fracking is being condemned for a 20% hike in actual methane emissions ratings ( how UNFAIR) - even if it comes from the reputable conclusions of oil/gas scientists - that are the "highest" rated of the Oil/Gas industries in the US -- could they possibly be influenced! Nahhhhhhhhh! That only happens in liberal cynics heads - no this is our scientific study - and in all likelihood this is what stands! - Not that our Obama would ever think of considering this shit as being responsible scientific research that we should admire and accept -- NOOOO - this is the God given truth - and any "liberal" discredit - should not be taken seriously - especially when we have a mega - billion "cash-load" of fracking gas at hand - and Hey - we've got a new partner with Canada to use the Tar Sands to expand our global export position! - How wonderful! Especially since the EPA is finally in agreement that this shit is going to be preferable to any other resource on Earth - who could possibly disagree - especially when it will help finance the Congress (with its' insider trading) and bring about our "energy independence" - without risk to our health or environment -- Bravo - Bravo!!!! What have we got to lose! The science is there!

lee e (114)
Tuesday April 30, 2013, 2:13 pm
I meant to say a 20% Reduction in methane - that the EPA had concluded - a big difference!

Bryna Pizzo (139)
Tuesday April 30, 2013, 6:23 pm
Good heavens! I fear we are going to destroy ourselves. (N, P, T)

Michela M (3964)
Tuesday April 30, 2013, 6:36 pm
Very S A D L Y
N O T E D !!!

Mike H (252)
Tuesday April 30, 2013, 6:48 pm
Humans are insanely destructive even to the point of self destruction.

Tuesday April 30, 2013, 7:03 pm
So sad, and all because of greed!

Terry V (30)
Tuesday April 30, 2013, 7:55 pm
Polution and Global Warming


Mark G. (0)
Tuesday April 30, 2013, 10:28 pm
Time for a peaceful REVOLUTION!

Cost-competitive green energy has arrived.

And it will get even more competitive as a few seemingly impossible Black Swans - highly improbable innovations with enormous implications - soon begin to convincingly prove possible and move toward production.

See for a few surprising examples.

This will create the missing boom in economic activity - which can call attention to a pair of economic Black Swans.

Survival demands far faster reduction in fossil fuels. It can be done, but able individuals need to move it forward while there is still time. Our leaders will be forced to follow.


Claudia A (70)
Wednesday May 1, 2013, 12:10 am
:( We are our worst enemy.

Ingo Schreiner (8)
Wednesday May 1, 2013, 12:33 am
thank you for the info

Monica D (580)
Wednesday May 1, 2013, 12:34 am
Use less oil - go car-free if you can, and encourage your friends and family to do the same.

Frances Darcy (135)
Wednesday May 1, 2013, 12:34 am
I agree we are our own worst enemy

Ro H (0)
Wednesday May 1, 2013, 3:36 am

Past Member (0)
Wednesday May 1, 2013, 5:05 am
Noted, symbolically important but the CO2 equivalent concentration is closer to 450 ppm (NOAH).

Kit B (276)
Wednesday May 1, 2013, 8:09 am

We could probably reduce methane by forcing the wind bags in Congress to shut-up.

We all know that the entire world sits on a tiny precipice of near collapse of the known weather systems. In many ways it is already too late, we have to begin to prepare for a very different world. That doesn't mean we give up or stop trying to clean up our ills, in fact more than ever we must do just that.

Gene J (290)
Thursday May 2, 2013, 9:56 am
"In a first in human history, "it looks like the world is going to blow through the 400-ppm level without losing a beat."

Actually ice core samples taken show that it neared that range 640,000 years ago. When the WHOLE planet was encased in at least a mile of ice, including the equator. That will kill us all. Insane, the leaders on this planet are as doomed as the ostriches they emulate so well with their heads firmly stuck in the sand and their fingers in their ears, so they can say they were never told specifically we are headed toward extinction. Gawd...

Michela M (3964)
Thursday May 2, 2013, 5:01 pm

Thanks!!! Posted in:  ORANGUTANS: Men of the Forest
in:  CLIMATE CHANGE: News, Pics, Videos
Please Join & Invite friends to Join
ORANGUTANS: Men of the Forest
together with Sumatran Tigers (Java & Bali Tigers already EXTINCT), Elephants, Rhinos, Clouded Leopards, Sun Bears, Wildlife, Biodiversity they face Extinction!! Only 300 Sumatran Tigers left on Earth!!! 300 Football Fields of Rainforests are CLEARED every hour in SE Asia to produce Palm Oil: a hidden, not labelled, unhealthy ingredient in the products we buy. We MUST do WHATEVER is possible to SAVE them all!!
AGAINST: Corporate Control, Deforestation, Illegal Logging, Global Warming, Pollution, CO2Emissions, Indigenous Peoples Displacement, Pet Trade, GMO Food, Vivisection… Also other Primates, as Chimpanzees, Gorillas, Gibbons, & Monkeys for Vivisection are dealt in this Group. Petitions/Info/Videos/Pics are here.
Please!! Join, Sign, Invite friends to Join!! Individually: we are one DROP, all together: we are an OCEAN!! ALL together we can make a difference!! Never doubt that a small group of thoughtful, committed citizens can change the world -Margaret Mead Thanks!! Michela
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