But (many) scientists are already saying projections will be (well) above the 2C target, if and only if an average planetary rise of 2.5 to 3 C (by approximately 2045 for 2 C and 2055 for 2.5 C according to the recent US National Climate Assessment and several other credible recent studies from reputable sources) does not woefully destabilize sea-floor methyl hydrates and cause a rapid rise of 10-20 C likely within a single northern hemisphere summer, as the end result of such a rapid rise in average temperature would be virtual human extinction. Everyone knows that the human race must cut man-made GHG emissions by 80-90% at least 35-40 years in advance as it takes 75-100 years for the natural carbon uptake process to reduce todays GHG emissions to a nearly harmless level, right? So if we cut man-made GHG emissions by 85% on January 1st, 2015, it would take until 2050-2055 for rising temperatures to nearly stabilize at 2.2-2.5 C above present average temperatures with average temperatures at high latitude in the Arctic and across Greenland coming out at about double that too. So the critical trillion-dollar question is whether 4.4 to 5 C worth of warming across the Arctic and Greenland will release more than 1/10th of a Gt of natural methane from methyl hydrates that are today rapidly destabilizing and are already raising Arctic temperatures by as much as 15-20C above normal in the late summer and fall, in fact over the last 8 years natural Arctic methane emissions across the Arctic have already tripled and atmospheric methane levels were measured in the Arctic just a month ago as high as 2717 parts per billion too. If just one Gt of natural methane is rapidly released from shallow seabed methyl hydrates just that event would raise global average temperatures another 3-4 C on top of whatever warming has already occurred, which would then cause a number of feedbacks which would result in even more ruinous methane releases and ever more temperature rise too, with a high limit of 6-7 C worth of rise which would force 80-90% of the human race to become refugees seeking survival. Worse yet, just over this past year thawing methyl hydrates have been found releasing natural methane into our atmosphere off the Washington State Pacific coastline and from the continental shelf off the US Eastern Seaboard too, as well as from Baffin Bay, the Bering Sea, east of New Zealand, around West Antarctica, around Greenland and Iceland, and around Svalbard too, where in mid-August sea surface temperatures were as much as 8-12 C above normal, as they were across the shallow East Siberian Arctic Shelf too. So anyone who says that failing to reach a very stringent global agreement on the rapid reduction of man-made greenhouse gases is gambling with the future of the human race, betting that 2.5 to 3.5 C of average planetary warming and double that at high latitude wont be enough to destroy the human race. Either that or they are betting that 2.5-3.5 C of average planetary warming will be more than enough to destroy the human race on our planets surface while they and a quarter million other people watch from the safety of their deep hardened bunkers, where after several generations pass there will be a whole lot more of scarce resources to share on a per-person basis than still exist today. commondreams.org/views/2014/12/16/climate-talks-face-long-hard-road-ahead-if-countries-are-reach-agreement-paris
Posted on: Wed, 17 Dec 2014 09:06:55 +0000
Trending Topics
Recently Viewed Topics
© 2015