It also turns out that SRM might not even be able to save us if things get really bad. The marine stratocumulus clouds they talk about depend on being able to cool to space (at the top). If you increase CO2 too much, this can no-longer happen, causing a collapse of the cloud system and a large decrease in planetary albedo (and hence warming) [0]. These SRM techniques are no silver bullet.
However, as other have pointed out, this might be able to buy us some time to develop negative emissions technology (which is ultimately the only way out). Hopefully we would use that time wisely.
However, as other have pointed out, this might be able to buy us some time to develop negative emissions technology (which is ultimately the only way out). Hopefully we would use that time wisely.
[0]- https://www.nature.com/articles/s41561-019-0310-1