“A large fraction of anthropogenic climate change . . . is irreversible on a multi-century to millennial time scale,” the report said. Sea level rise, for example, “will continue for many centuries beyond 2100” because of ice-sheet melting that is underway and other causes.
Scientists and policymakers have set a goal of restraining the average global temperature increase to no more than 2 degrees Celsius, or 3.6 degrees Fahrenheit, on grounds that a higher increase would change the climate so dramatically that neither humans nor natural ecosystems could easily adapt. That would probably require keeping concentrations of key greenhouse gases in the atmosphere to under 450 parts per million by 2100, the panel said. Concentrations passed 400 parts per million for the first time in 2013.
Even with a rapid shift to renewable energy, the task of achieving such drastic reductions is daunting, IPCC Chairman Rajendra Pachauri said in a speech last week as panel members began final revisions to the report.
“May I humbly suggest that policymakers avoid being overcome by the seeming hopelessness of addressing climate change,” Pachauri said. “It is not hopeless. This is not to say it will be easy.”
There's a thread on you on Leftypol with a lot of confusion: http://8ch.net/leftypol/res/316491.html
Someone there even claims to be you. I thought you should know.
Posted by: Podolcsák Balázs | September 07, 2015 at 10:43 PM