Hello Ken,
my two pence, not repeating Klaus' input.
/1. What are the most important things we know about solar
geoengineering?/
some techniques can cool the planet, rapidly and in a reversible way
(although the impacts may not all be reversible)
there are side effects, eg on precipitation patterns, but these may well
be in the noise for moderate amount
/2. What are the most important things we don't know about solar
geoengineering?/
what is the upper bound of solar geoengineering?
how quickly can the technology be developed and at what cost?
what regional effects and what climate impacts on human and natural
systems?
what impacts on the stratosphere for SAI?
can solar engineering be used for engineering the regional climate or
extreme climate events?
See you on Sunday
Olivier
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