I basically agree with all of this. I noticed something similar came up on RC not so long ago...eg this comment and Gavin Schmidt's reply:
<http://www.realclimate.org/index.php/archives/2007/06/g8-summit-declaration/#comment-35355> It takes a bit of careful parsing, IMO, so as to not completely throw out some potentially useful information. I think most people (surely including Gavin, given what he's written on RC in the past) would agree that the more recent paleoclimate (such as the Last Glacial Maximum) adds some support to the conventional view of the climate system, even though there are significant uncertainties even there (both in terms of what exactly happened, and how directly relevant it is to future change). Certainly the IPCC said something along those lines. OTOH, if climate sensitivity really was 6 or 8C or worse, as some like to pretend it might be :-) one might reasonably expect to see a stronger signal in the longer term record. James [EMAIL PROTECTED] wrote: >> Your last conclusion is rather obviously flawed. All you can conclude, >> presuming your data are valid, is that CO2 cannot be the *only* >> significant driver of global temperature on those time scales, a fact >> which is universally agreed. > > Actually, as long as these other drivers act independently of CO2, and > we were to regularly see instances of maximal temperatures (22C) and > minimal CO2 (200 PPM), and minimal temperatures (12C) and maximal CO2 > (7000 PPM), that would be a pretty strong argument that the effect of > CO2 is small. (etc) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups Global Change ("globalchange") newsgroup. Global Change is a public, moderated venue for discussion of science, technology, economics and policy dimensions of global environmental change. Posts will be admitted to the list if and only if any moderator finds the submission to be constructive and/or interesting, on topic, and not gratuitously rude. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/globalchange -~----------~----~----~----~------~----~------~--~---
