From The Guardian UK:
World's carbon dioxide concentration teetering on the point of no return
Mikey Slezak, Guardian UK, 11 May 2016
Future in which global concentration of CO2 is permanently above 400 parts per million looms.
The world is hurtling towards an era when global concentrations of carbon dioxide never again dip below the 400 parts per million (ppm) milestone, as two important measuring stations sit on the point of no return.
The news comes as one important atmospheric measuring station at Cape Grim in Australia is poised on the verge of 400ppm for the first time. Sitting in a region with stable CO2 concentrations, once that happens, it will never get a reading below 400ppm.
|Source: Australian Government / CSIRO|
Meanwhile another station in the northern hemisphere may have gone above the 400ppm line for the last time, never to dip below it again.
“We’re going into very new territory,” James Butler, director of the global monitoring division at the US National Oceanographic and Atmospheric Administration, told the Guardian.
When enough CO2 is pumped into the atmosphere from burning fossil fuels, the seasonal cycles that drive the concentrations up and down throughout the year will eventually stop dipping the concentration below the 400ppm mark.
|Source: United States Government, NOAA.|
And we've already seen dangerous climate changes, like the die-off in the Great Barrier Reef, the near-extermination of starfish on the North American Pacific Coast (thank goodness there's being a recovery there), the submersion of five Pacific Islands, and the deadly typhoons and cyclones such as Yolanda in the Central and South Pacific since 2013.
What's the solution? Get off of fossil fuels before the current Peak Oil finally peaks and goes back down. And plant lots and lots and lots of trees.