[hannob]

I'm not a fan of SRM, but this isn't true.

The idea people in the SRM research community have go more like that you have declining CO2 emissions, at some point you turn around by deploying negative emissions tech and SRM is basically your "let's cut off the worst effects in times of highest CO2 concentrations". This is e.g. often described by David Keith, who's one of the leading advocates for SRM research.

Whether any of that is feasible or realistic is of course debatable, also whether one should even go down that path and whether even the prospect of doing SRM is blocking faster climate action. (And I sympathize with all those concerns, but I think paiting a wrong picture doesn't help.)

[alexgmcm]

The issue is I don't think that scenario is realistic.

We don't have declining global CO2 emissions and there are no signs we will have that any time soon. In fact, annual CO2 emissions continue to increase at an almost exponential rate.

So first of all we'd have to decrease emissions and invent and deploy some CO2 extraction tech to help lower the current atmospheric CO2 concentration.

To me, it seems far more likely that if SRM was deployed many would just see it as a way to continue with business as usual without having to suffer the effects of global warming.