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Friday, August 15, 2008
It Don’t Add Up!

By Marlo Lewis on Planet Gore

There’s been no net global warming in the 21st century. Although seldom reported by the mainstream media, it’s quite a story, because no climate model predicted it.

See larger image here

This graph, courtesy of atmospheric scientist John Christy, shows how climate models and reality diverge. The red, purple, and orange lines are model forecasts of global temperatures under different emission scenarios. The yellow line shows how much warming we are supposedly “committed to” even if CO2 concentrations don’t change. The blue and green lines are actual temperatures as measured by ground-based (HadCrut) and satellite (UAH LT) monitoring systems.

What’s really rather remarkable, is that since 2000, the rates at which CO2 emissions and concentrations are increasing have accelerated.

According to a study in Proceedings of the National Academy of Sciences, fossil fuel and cement emissions increased by 3.3 percent per year during 2000-2006, compared to 1.3 percent per year in the 1990s. Similarly, atmospheric CO2 concentrations increased by 1.93 parts per million per year during 2000-2006, compared to 1.58 ppm in the 1990s.

And yet, despite accelerating emission rates and concentrations, there’s been no net warming in the 21st century. It don’t add up! Skeptics have long said climate models aren’t accurate enough to base policy decisions truer now than ever. See the story here.

Posted on 08/15 at 05:16 AM
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