To some extent we just have to be able to walk and chew gum at the same time though. If you want SRM to be on the table in 15-20 years with a full(ish) understanding of the risks (+how to actually do it in practice), that means scaling up the research program today - science is slow!

Faster Route!

I guess they meant 1C to 3C?

the fact it only hits a particular cohort is what gets me. I will pay much more tax than grads a couple years older than me in the same job, for my whole life!

Why too low?

Those homes aren't 'mansions' by most standards. But if you own a 1.5M home in central London you either bought it recently and therefore have money, or benefitted from big unearned housing market gains and could share some of that back with the state?

Fair, but it's a step into the dark either way, and the uncertainty under [more warming] might be larger than that under [less warming + SAI]

of course, but by my back of the envelope 'eventually' here means order 100,000 years.

1°C cooling ~ 10 Tg SO2 ~ 1% of current aviation ~ 0.03 % of global CO2 emissions ~ 1E-5 °C extra warming per year SAI

Lots of good reasons not to do SAI but the CO2 impact isn't one of them

Well said Dan! After a week spent with the inspiring early career SRM community and Operaatio Arktis folks, the contrast in values to Stardust couldn't feel stronger

Did Northern Hemisphere air pollution contribute to 70s and 80s Sahel drought? We think so, but we're still arguing about how much.

For the most important risks of solar geo, consensus would (hopefully) emerge, but slowly. Informed by observed climate, but still based on theory and modelling