More "permanence":http://www.commondreams.org/news/2015/11/09/overheated-planet-entering-uncharted-territory-frightening-speed "WMO Secretary-General Michel Jarraud said this means that we will "soon" be living with globally averaged CO2 levels above the dangerous milestone of 400 ppm "as a permanent reality." GR - is it just me, or aren't such statements forgetting that there is no permanence to any given ppm, e.g, the CO2 ice core record; the intra annual variation in ppm? The ppm is dictated by emissions versus removal, with annual emissions currently beating removal by about 50%. Whether or not humans can/will intervene to sufficiently change/manage this ratio dictates a given CO2 trajectory or "permanence". Otherwise, barring a runaway greenhouse, CO2 will eventually return to pre anthropogenic levels on geologic time scales. Might we be able to hasten this decline in CO2? Might air CO2 be actively managed by human intervention?- the answers will determine the planet's "permanent reality". Sent from the Rau's iPad
On Nov 9, 2015, at 3:55 PM, Greg Rau <gh...@sbcglobal.net> wrote: https://scripps.ucsd.edu/programs/keelingcurve/2015/11/09/measurement-note-an-adjustment-to-the-record/ "On Nov. 5, 2015, we made an adjustment to the Scripps Mauna Loa CO2 record that has the effect of increasing concentrations we have reported since April 2015 by 0.4 parts per million (ppm). We made the adjustment after comparing our short-term calibration gases with the long-term calibration gases, concentrations of which have been determined manometrically. Comparing short- and long-term calibration gases is a normal part of the strategy for maintaining reliable long-term measurements. The adjustment increases the likelihood that concentrations will remain above 400 ppm permanently after 2015."– Ralph KeelingGR - Unless air CO2 removal is increased and/or CO2 emissions are reduced.-- 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 http://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. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
