Daily Archives: August 15, 2012

A Floor on CO2 Reduction

From What Is Your Carbon Foolprint?, looking at the CO2 maximal concentrations at the peak of the previous three inter-glacial periods in Figure 1, the number is estimated at an average of about 280 ppm. This is the CO2 generated by the natural temperature increase.

Looking at the current inter-glacial warm period since the last ice age, we would estimate the average CO2 maximum at about 260 ppm. With the current (as per the graph) CO2 concentration at 383 ppm, if we assume the different is anthropogenic, then the best reduction we could hope to get would be of about 180 ppm. This of course would necessitate the cessation of all human activity.

We throw out this thought as we haven’t encountered it elsewhere.

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