The next round of IPCC reports on climate change will take an even less equivocal position on anthropogenic global warming:
Climate Panel Cites Near Certainty on Warming
An international panel of scientists has found with near certainty that human activity is the cause of most of the temperature increases of recent decades, and warns that sea levels could conceivably rise by more than three feet by the end of the century if emissions continue at a runaway pace.
The scientists, whose findings are reported in a draft summary of the next big United Nations climate report, largely dismiss a recent slowdown in the pace of warming, which is often cited by climate change doubters, attributing it most likely to short-term factors.
The report emphasizes that the basic facts about future climate change are more established than ever, justifying the rise in global concern. It also reiterates that the consequences of escalating emissions are likely to be profound.
“It is extremely likely that human influence on climate caused more than half of the observed increase in global average surface temperature from 1951 to 2010,” the draft report says. “There is high confidence that this has warmed the ocean, melted snow and ice, raised global mean sea level and changed some climate extremes in the second half of the 20th century.”
The 2007 report found “unequivocal” evidence of warming, but hedged a little on responsibility, saying the chances were at least 90 percent that human activities were the cause. The language in the new draft is stronger, saying the odds are at least 95 percent that humans are the principal cause.
I wonder whether this will change anyone's mind about the underlying reality or the appropriate response. The Times provides this incomplete taxonomy:
Some climate doubters challenge the idea that the earth is warming at all; others concede that it is, but deny human responsibility; still others acknowledge a human role, but assert that the warming is likely to be limited and the impacts manageable. Every major scientific academy in the world has warned that global warming is a serious problem.
Hmm, what do the Times consider those of us who think that, whether the climate impact is manageable or not, the proposed remediations are too expensive, insufficient, and, since China and India have not been on board, incomplete? On the question of China, this report is interesting - higher sea levels will hit China hard.