Friday, September 27, 2013

New Summary for Policy Makers (SPM) from the IPCC

With the MSM falling over themselves to proclaim how certain scientists are that man is causing global warming...

Some reactions:

I think it also helpful to note that there is a much less emphasis on GHG (greenhouse gases) such as CO2, but also on "other" anthroprogenic changes.  As touched on by Judy Curry post, what will the IPCC say when the current 10 year negative trend (not pause) extends out to 15 or 20 years (as I think it will)?  Will they admit that they were wrong?...not bloody likely.

As I comment in the national post article: This report is out of date already, stillborn, as recent studies that didn't make the deadline for incorporation into this report ARE cast doubt on the severity of AGW. The only way that the IPCC can raise their certainty is by being more certain about a more vague criteria...

But one of my favourite reaction is Ross McKitrick's comment here:

SPM in a nutshell: Since we started in 1990 we were right about the Arctic, wrong about the Antarctic, wrong about the tropical troposphere, wrong about the surface, wrong about hurricanes, wrong about the Himalayas, wrong about sensitivity, clueless on clouds and useless on regional trends. And on that basis we’re 95% confident we’re right.

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