Hi All, I am astonished at the lack of courtesy, also in a scientific manner, here. Before suggesting that IPCC has made a 'blunder', or that someone who defends the AR5 report uses 'weasel words' it would be helpful going back to the sources. The figure in the AR5 is taken from Cao and Caldeira (2010) and shows the results of idealized experiments with a global carbon cycle and climate model, where no such thing has been committed as to 'ignore the warming effect of accumulated CO2'. The model solves for the carbon balance, so there is no way how the accumulated carbon (and hence its warimg effect) could have vanished. One might criticise the model for being overly simplistic, but a simple 'blunder' it certainly isn't.
Best regards, Christoph Am 15/11/16 um 10:47 schrieb Stephen Salter: > > Hi All > > "Approximately" is the weasel word. > > Stephen > > > On 15/11/2016 08:39, Olivier Boucher wrote: >> >> >> Dear John, >> there is no blunder here. This is an idealized scenario. If CO2 >> emissions go to zero abruptly (red curve), then the committed warming >> (ie the warming in the pipeline because the ocean hasn't equilibrated >> yet) is approximately compensated by the decrease in CO2 emissions >> induced by zero emissions (because natural sinks to vegetation and >> ocean keep working). >> Regards, >> Olivier >>> *Blunder 2*. IPCC has ignored the warming effect of accumulated >>> CO2. They say that global temperature rise will be halted when net >>> CO2 emissions have fallen to zero, ignoring the effect of >>> accumulated CO2 and other forcing agents in the atmosphere. >> >> -- >> ------------------------------------------------------------------------ >> Our opinion piece is now published in PNAS >> <http://www.pnas.org/content/113/27/7287> >> -- >> You received this message because you are subscribed to the Google >> Groups "geoengineering" group. >> To unsubscribe from this group and stop receiving emails from it, >> send an email to geoengineering+unsubscr...@googlegroups.com >> <mailto:geoengineering+unsubscr...@googlegroups.com>. >> To post to this group, send email to geoengineering@googlegroups.com >> <mailto:geoengineering@googlegroups.com>. >> Visit this group at https://groups.google.com/group/geoengineering. >> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google > Groups "geoengineering" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to geoengineering+unsubscr...@googlegroups.com > <mailto:geoengineering+unsubscr...@googlegroups.com>. > To post to this group, send email to geoengineering@googlegroups.com > <mailto:geoengineering@googlegroups.com>. > Visit this group at https://groups.google.com/group/geoengineering. > For more options, visit https://groups.google.com/d/optout. > > > The University of Edinburgh is a charitable body, registered in > Scotland, with registration number SC005336. > -- Christoph Voelker Alfred Wegener Institute for Polar and Marine Research Am Handelshafen 12 27570 Bremerhaven, Germany e: christoph.voel...@awi.de t: +49 471 4831 1848 -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
