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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> extropy-chat [mailto:extropy-chat-bounces@lists.extropy.org] <b>On Behalf Of </b>Max More<br><b>Sent:</b> Sunday, August 10, 2014 11:31 AM<br><b>To:</b> ExI chat list<br><b>Subject:</b> [ExI] Diminishing influence of increasing carbon dioxide on temperature<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I don't recall seeing this factor discussed here:<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="http://wattsupwiththat.com/2014/08/10/the-diminishing-influence-of-increasing-carbon-dioxide-on-temperature/#more-114325">http://wattsupwiththat.com/2014/08/10/the-diminishing-influence-of-increasing-carbon-dioxide-on-temperature/#more-114325</a><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><p class=MsoNormal>Max More, PhD<o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cool thanks Max. I was wondering about this when the ExI list was having those discussions a few yrs ago and I was pondering negative feedback loops to explain why the earth hadn’t ever gone into a runaway greenhouse effect in the past. I was looking that the absorption spectra of carbon dioxide back then and came to a similar conclusion: the existing carbon dioxide in the atmosphere is already absorbing most of the reflected energy it can absorb, even if there was a loooooot more CO2 released. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I need to dig around in my green notebooks and see if I can find those calcs; I think it was from about 6 to 8 yrs ago. At the time I looked at the negative feedback balancing the increased absorption: the radiation to space using the Stefan-Boltzmann equation. I concluded that the reason CO2 has never caused a runaway greenhouse effect is that it cannot. Even if CO2 retains *<b>all</b>* the energy in its absorption band, that T^4 term still overpowers everything else.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Granted it might get a few degrees warmer before that happens, but hey, this is a cold planet. The estimated increase using only single digit estimates was in the 2-4 C range as I recall. We will do more water skiing and less snow skiing. Florida will likely look a lot different. Might hafta move a few cities. We can deal. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>spike<o:p></o:p></span></p></div></div></div></body></html>