The point I am trying to make is that quite regularly outside in the south of London, we saw CO2 levels above 550 ppm. This was typically in the morning. This was checked on two CO2 monitors at the same time as we initially did not believe the results. Much has been made about plants adapting to higher CO2 levels and impacts of this. I would suspect that if anyone wants to look at this, you will find already some of the anticipated effects of increase CO2 in this region. It is possible that a number of other regions have similar conditions. Someone should look at this. Also if the background CO2 does rise due to continued emissions, I would expect regions such as I describe to have even higher CO2 levels for periods of time as I describe. This could lead to some unexpected effects that possibly have not been modelled. Perhaps some discussion around this.
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