David is correct. We're extremely unlikely to stay below 1.5C of warming. Though we still have a shot at ~2C. There's one hope for 1.5C: Solar radiation management. No one wants to talk about it. But if you believe staying below 1.5C is imperative, then it must be discussed. https://twitter.com/drvox/status/1213172667932708867 …
Marine Stratus Brightening also potentially very interesting https://royalsocietypublishing.org/doi/full/10.1098/rsta.2012.0086 … Just uses sea water locally, and would reverse very quickly if shut off, like on a timescale of ~days, I believe.