Joe Romm has written an interesting piece about it over on Climate Progress.
Here is an excerpt;
"Energy Daily (subs. req’d) notes of the U.S. media non-coverage of Copenhagen:
Ironically–given the Gallup finding that two in five Americans think the press is exaggerating climate change concerns–only a few of the major U.S. news outlets published accounts of the Copenhagen gathering, which received heavy coverage by news outlets in Europe and Asia.
Great point — though “ironically” isn’t the right word. There is nothing ironic about this. It is cause and effect. The right word is “tragically. ...
West Coast Climate Equity notes:
Last time mean global temperatures reached 2 to 3 degrees Celsius above present levels, in the mid-Pliocene (3 million years ago), an event associated with CO2 levels of about 400 parts per million, polar regions were heated by near-8 degrees C and sea levels have risen by 25+/-12 meters relative to the present. This represents near-total melting of Greenland and west Antarctica ice sheets (Robinson et al., 2008: “Pliocene role in assessing future climate impacts” (http://pubs.giss.nasa.gov/ abstracts/ 2008/ Robinson_etal.html).
A rise of mean global temperatures above 4 or 5 degrees Celsius would shift the atmosphere to pre-glacial/interglacial conditions, which dominated the Earth from about 34 million years ago (end-Eocene) (Zachos et al., 2008) http://www.nature.com/ nature/ journal/ v451/ n7176/ full/ nature06588.html
That means ultimate sea level rise of 250 feet, with the best current projection being 5 feet by 2100 (see “Startling new sea level rise research: “Most likely” 0.8 to 2.0 meters by 2100“), rising thereafter 10 to 20 inches a decade (or more) for centuries. Good luck adapting to that, next 50 generations."