The NASA graph does 'tell the truth' of CO2 rise since 2005. Data with seasonal variance is also readily available, for example this chart of CO2 as measured at Mauna Loa http://upload.wikimedia.org/wikipedia/commons/8/88/Mauna_Loa_Carbon_Dioxide.png | | | | | | | | | | | | | | | View on upload.w... | Preview by Yahoo | | | | |
Two points emerging from this chart are that CO2 level has an annual cycle of about up seven down six ppm, and that the rate of increase has accelerated significantly since the 1960s. Brian Cartwright makes a very good point about the potential of the biological cycle to draw down carbon. Leveraging the scale of the natural carbon cycle through Carbon Dioxide Removal could deliver a bigger contribution to climate stabilisation than reducing anthropogenic emissions. Robert Tulip From: Brian Cartwright <briancartwrig...@gmail.com> To: geoengineering@googlegroups.com Cc: Adam Sacks <adam_art...@yahoo.com> Sent: Tuesday, 9 December 2014, 0:02 Subject: [geo] Does this graph tell the truth? http://climate.nasa.gov/vital-signs/carbon-dioxide/ CO2 levels here are "corrected for seasonal cycle". I would suggest that by showing the annual sawtooth effect of photosynthesis and decay/respiration the graph could suggest the potential of the biological cycle to draw down carbon. I know many physical scientists discount this as a given, but when an increasing proportion of earth's surface is deforested, desertified, etc, the natural drawdown effect decreases; it should instead be amplified by restorative human activity and not edited out of our climate data. Brian Cartwright-- 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.