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
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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--
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