But aren't some of the emissions (sulfur based ones) significantly more harmful than pure CO2 released, and (from what I remember about Nathan Myhrvold's work)

But aren't some of the emissions (sulfur based ones) significantly more harmful than pure CO2 released, and (from what I remember about Nathan Myhrvold's work) much more impactful when released at 40k feet? Just wondering if measuring the CO2 volume is less relevant when talking about releasing sulfurs at altitude.