by Terry Anderson
July 02, 2014
The congressionally mandated “National Climate Assessment” pretends to forecast the future, while acknowledging that even the most drastic reduction in carbon emissions would take centuries to produce any appreciable effect on temperature. Yet it has captured headlines and offered President Obama more ammunition for his war on fossil fuels, including his determination to block approval of the Keystone XL pipeline. The report takes for granted certain variables that, if changed even slightly, would dramatically alter its conclusions about the world’s climate future. Even if one assumes the assessment’s models to be accurate, it concludes that “climate change that takes place due to increases in carbon dioxide concentration is largely irreversible for 1,000 years after emissions stop.” In other words, mitigation to slow or halt greenhouse gas emissions will be costly today with little to no payout over the next several centuries.