water effects weather differently based on whether its vapor (traps infrared) or suspended droplets/crystals as a cloud (reflects infrared)

sulfur is both a greenhouse gas and a condensate for cloud formation

nature is full of examples where you can add more and more of a single factor and suddenly the effect will flip and contribute to the other direction, before reaching a further threshold and flipping the other way

it is not possible to make blanket statements like "Adding water to the atmosphere increases average temperature"

As I understand it, CO2 is one of the few factors that we can all agree is just straighforward, more CO2 more problems. But chaos is tricky, we can only simulate so much.

To counter that, H2O has a really easy path to exit the atmosphere (straight down), and it’s not like we’re producing that much more…

Unlike CO2 which has been nicely stored away from the atmosphere for millions of years…