CO2 was below 300 PPM in 1900, and 86% of Swiss glaciers were retreating. Hansen says that we can stop glacial retreat by returning to 350 PPM, which is a number he pulled out from where the sun never shines.
Disrupting the Borg is expensive and time consuming!
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Re-posted at DTT dot com
Unlike the warmists, you can’t make this stuff up. Great work, Steve.
He picked 350 so it wouldn’t be too hard for McKibben to remember it.
From WWUT: faster in the 1940’s than today. http://climateaudit.org/2005/11/18/archaeological-finds-in-retreating-swiss-glacier/
Climate Audit: Artifacts from different periods found in Swiss glacier melt (2003)
http://climateaudit.org/2005/11/18/archaeological-finds-in-retreating-swiss-glacier/
I remember seeing photos showing glacial retreat 100-150 years ago but can’t find them easily.
Warmerin Andes 500 years ago too
http://www.amjbot.org/content/97/9/1579.full