More evidence that Jim Hansen is a nut

From this article:

Speaking to The Guardian, Hansen said that CO2 levels should be slashed to 350ppm – a level below the current stock of greenhouse gasses in the atmosphere – if "humanity wishes to preserve a planet similar to that on which civilisation developed".

"If you leave us at 450ppm for long enough it will probably melt all the ice – that's a sea rise of 75 metres," he added. "What we have found is that the target we have all been aiming for is a disaster – a guaranteed disaster."

Given that sea levels have risen maybe 8 inches in the last century, it's nothing short of madness to suggest that a bump in CO2 will raise sea levels nearly 3,000 inches.

Al Gore on Hansen in Time:

When the history of the climate crisis is written, Hansen will be seen as the scientist with the most powerful and consistent voice calling for intelligent action to preserve our planet's environment.

Hansen is not just any old crackpot scientist--he's THE crackpot scientist at the very epicenter of carbon dioxide hysteria.

For some of those who have placed their reputations on the line over the idea of a "climate crisis", it's got to be terribly disheartening to slowly realize that Jim Hansen's credibility is shot.

A related post is here.

Update: It looks like even fellow alarmist Gavin Schmidt is distancing himself from Hansen now.

Excerpt from RealClimate:

Hansen posits that the long term trend in the deep ocean temperature in the early Cenozoic period (before there was substantial ice) was purely due to CO2 (using the Charney sensitivity). He then plays around with the value of the CO2 concentration at the initiation of the Antarctic ice sheets (around 34 million years ago) to get the best fit with the CO2 reconstructions over the whole period. What he ends up with is a critical value of ~425 ppm for initiation of glaciation. To be sure, this is fraught with uncertainties - in the temperature records, the CO2 reconstructions and the reasonable (but unproven) assumption concerning the dominance of CO2. However, bottom line is that you really don't need a big change in CO2 to end up with a big change in ice sheet extent, and that hence the Earth System sensitivity is high.