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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
