Hm, I suppose I don’t have reason to be confident here. But as I understand it:
Stratospheric aerosol injection removes a certain wattage of solar radiation per square meter.
The additional greenhouse effect from human emissions only constitutes a tiny part of our overall temperature balance, shifting us from 289 K to 291 K for instance. SAI cuts nearly the entire energy input from the Sun (excepting that which is absorbed above the stratosphere). So maybe SAI could be slightly more effective in terms of watts per square meter or CO2 tonnes offset under a high-emissions scenario, but it will be a very small difference.
Hm, I suppose I don’t have reason to be confident here. But as I understand it:
Stratospheric aerosol injection removes a certain wattage of solar radiation per square meter.
The additional greenhouse effect from human emissions only constitutes a tiny part of our overall temperature balance, shifting us from 289 K to 291 K for instance. SAI cuts nearly the entire energy input from the Sun (excepting that which is absorbed above the stratosphere). So maybe SAI could be slightly more effective in terms of watts per square meter or CO2 tonnes offset under a high-emissions scenario, but it will be a very small difference.
Would like to see an expert chime in here.