The warning from the paper cannot be over-emphasized. Sea level rise is real, it's highly dangerous, and must not be ignored. The paper states that, when ice sheets have melted before due to natural forcings, the consequences have been catastrophic. In the post-industrial age, where the melting is greater than during the paleo melts, the science points to even more catastrophic consequences.
Humanity is rapidly extracting and burning fossil fuels without full understanding of the consequences. Current assessments place emphasis on practical effects such as in- creasing extremes of heat waves, droughts, heavy rainfall, floods, and encroaching seas (IPCC, 2014; USNCA, 2014). These assessments and our recent study (Hansen et al., 2013a) conclude that there is an urgency to slow carbon dioxide (CO2) emis- sions, because the longevity of the carbon in the climate system (Archer, 2005) and persistence of the induced warming (Solomon et al., 2010) may lock in unavoidable highly undesirable consequences. (...)
If the ocean continues to accumulate heat and increase melting of marine-terminating ice shelves of Antarctica and Greenland, a point will be reached at which it is impossible to avoid large scale ice sheet disintegration with sea level rise of at least several meters. The economic and social cost of losing functionality of all coastal cities is practically incalculable.Large scale ice sheet disintegration with a sea level rise of at least several meters. That means, according to the report, the functional loss of all coastal cities. The report points to unpredictable and sudden melts where the ocean is warming and increased superstorms and sea level rise--with the implication of a threat to civilization itself--as a result.
As there is no doubt special interests will try to explain away or confuse this report, we are posting the actual abstract and link to the report, which, while scientific, is clear enough to be terrifying.
Action must be taken.
The report is available here: → read more
LABELS: CLIMATE, CLIMATE CHANGE, ICE MELT, JAMES HANSEN, NASA, SEA LEVEL RISE,SUPERSTORMS, WARNING