In early April, Duarte warned that the Arctic summer sea ice was melting at a rate faster than predicted by conventional climate models, and could be ice free as early as 2015 - rather than toward the end of the century, as the UN Intergovernmental Panel on Climate Change (IPCC) projected in 2007. He said:
"The Arctic situation is snowballing: dangerous changes in the Arctic derived from accumulated anthropogenic green house gases lead to more activities conducive to further greenhouse gas emissions. This situation has the momentum of a runaway train."
After a record loss of summer sea ice in the Arctic Ocean last year, the 2013 melt season has begun at the top of the world, with ice vanishing in April at a faster pace than it did this time last year.
A cadre of the world’s top climate scientists have seen enough evidence of prospective runaway climate change that they are now sounding the alarm, putting the world on notice that an extinction event may be in the cards. The principal actor in this macabre tragedy: Methane.
According to the U.S. Department of Energy, Office of Science, as of February 2013, methane levels in the atmosphere are measured at 1,874 ppb (parts per billion.) This level, in an historical context, is more than twice as high as any time since 400,000 years before the industrial revolution. In the past, methane has ranged between 300-400 ppb during glacial periods and 600-700 ppb during warm interglacial periods.
“We carried out checks at about 115 stationary points and discovered methane fields of a fantastic scale – I think on a scale not seen before. Some of the plumes were a kilometer or more wide and the emissions went directly into the atmosphere – the concentration was a hundred times higher than normal,” says Dr. Igor Semiletov of the International Arctic Research Centre at the University of Alaska Fairbanks, who led the 8th joint US-Russia cruise of the East Siberian Arctic seas, Ibid.
According to David Wasdell, International Coordinator, Meridian Programme: “A runaway climate change is now clear and beginning to be quantified for the first time… the greatest threat we face as a planet… The rate of change we’re generating in the current situation is between 200-300 times faster than that experience of any extinction event apart from the asteroidal impact.
Could - Climate Models - Predicted
Originally posted by poet1b
reply to post by pheonix358
Read the articles in the Op.
Change at this rate has only happened once, and that is when there was a massive impact of a comet or something that large.
Call it natural if you want, but this isn't going to be anything like humanity has ever faced.
This is like a major eruption at Yellowstone, except it will be a lot slower.