This IPCC Report, Like Others, Is FAR from Alarmist
As grim as the Working Group 2 report on impacts is, it explicitly has very little to say about the catastrophic impacts and vulnerability in the business as usual case where the Earth warms 4°C to 5°C [7°F-9°F] — and it has nothing to say about even higher warming, which the latest science suggests we are headed toward.
The report states:
“Relatively few studies have considered impacts on cropping systems for scenarios where global mean temperatures increase by 4°C [7°F] or more.
“… few quantitative estimates [of global annual economic losses] have been completed for additional warming around 3°C [5.4°F] or above.”
D’oh! You may wonder why hundreds of the world leading climate experts spend years and years doing climate science and climate projections, but don’t bother actually looking at the impacts of merely staying on our current carbon pollution emissions path — let alone looking at the plausible worst-case scenario (which is typically the basis for risk-reducing public policy, such as military spending). (Think Progress)