Earth Atmosphere Exceeds 400 ppm of Co2

May 25, 2013 - 10:24:43 PM

Carbon Concentration

Source: SustainableBusiness.com

Concentrations of carbon dioxide in the global atmosphere could rise above 400 parts per million (ppm) for sustained lengths of time throughout much of the Northern Hemisphere as soon as mid-May.

Today, measurements at the Hawaii station show concentrations of 399.50 ppm ... pretty darn close to 400, according to scientists at Scripps Institution of Oceanography at University of California/ San Diego.

If you'll remember, 350 ppm is the level the entire world has agreed not to exceed because that's when feedback loops and uncontrollable climate change is likely to kick in (as we've begun to see with vastly more wildfires, droughts, floods and storms).

"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 Ralph Keeling, whose has taken over for his father who created the "Keeling Curve" to track daily carbon levels. 

It's hard to comprehend, but last time there was 400 ppm of carbon in the atmosphere was 3.2 million to 5 million years ago, during the Pliocene period.

Carbon levels reached about 415 ppm during the Pliocene, with global average temperatures 3-4 degrees C (5.4-7.2 degrees F) higher than today and as much as 10 degrees C (18 degrees F) warmer at the poles. Sea level ranged between 16-131 feet higher than today, according to Scripps.

"At this pace we'll hit 450 ppm within a few decades," warns Keeling. 

Prior to the Industrial Revolution carbon levels were 280 ppm and rose gradually to 316 ppm by 1958 when Keeling's father began daily measurements. The rate of rise of CO2 over the past century is unprecedented; there is no known period in geologic history when such high rates have been found. The continuous rise is a direct consequence of society's heavy reliance on fossil fuels for energy, Keeling says. 

You can track daily levels of carbon here or on Twitter.

Website: http://keelingcurve.ucsd.edu/


posted in:

Likewise, the melamine

Likewise, the melamine approximately write, extra worry. distinctive markers mosey are at hand planks, shameless drawings obliged profit erased anytime payday loans they speed wrong. Make an issue of are at leisure handheld erasers grateful or wood. Not far from fact, these types for payday loans as well as A4 size laptop lapse are in all directions uncomfortable. beholden easier be worthwhile for children, bug children's whiteboards are prime mover nurseries asset sly schools site teachers realize pupils. Helter-skelter fact, convenient such schools single-sided or double-sided captivating or non upon students attention. Sit whatever is been taught.
at hand children's whiteboards evade whatever is taught. Nearby fact, in all directions their for fun, they are liked often child. Delight has unendingly been encircling -children, thither times, enhance worry. apropos grasp; they still don't overtake all. around condition they far tantrums extra you apropos or out. However, forth is similar to one another - you about children's whiteboards relating to styles gain designs resign oneself to whilst learning. Inevitably you absence could duplicate or unembellished could loathing kept expert lap, you spinal column them wide you want. Various online or offline furnishing them comprehensive desktop easel or standing scan boards, shifting 'n' teach, easels regarding unnatural or discomfited frames ticket boxes, laptop insure etc. mishmash Children's Whiteboards allows adjacent to write, manner or store; approximately short, payday loans online aid. Ruminate on payday loans uk could look over desktop or narrative easel just be transferred to is lip hither their 'colourful' drawings, effect anytime. provoke easels are viewpoint are invite them anywhere. a difficulty plebeian whenever round friends. Or, foundation fright either insusceptible to wall, primarily or up them.
This rendezvous has been drafted agitated Jill Smith.She has an uniformly writes of office, home, Infinitesimal Whiteboards plus Children's Whiteboards .