The Missing CO2
Only if you treat the system as being composed of independent variables, rather than being dynamic. That is to say, one of the major challenges in asserting that humans have a measurable effect in atmospheric CO2 concentrations is the fact that our emissions are missing. As our CO2 emissions have increased, CO2 sinks have increased. This was not predicted.
Now, you can assert that we’re having an effect by increasing these CO2 sinks (say, the greening of the Sahara), but the dynamic biosphere seems to work as a buffer for any addition (or subtraction) of CO2, generally maintaining it at a set level.
It’s actually quite amazing how complex the world really is — far from being controlled with a thermostat made out of one gas measured in parts per million, it’s filled with all kinds of negative feedbacks :)
Thank you again for your article!