https://www.theguardian.com/environment/2023/jul/30/radical-...Dismissing SRM technology, Prof Joeri Rogelj of Imperial College, London, called it “irresponsible, dangerous and a threat to the manageability” of our survival, saying: “It is not a solution but an extremely dangerous band-aid that covers up the global warming problem without healing it, creating a false and unwarranted sense of climate safety while the core of the problem continues to fester.”
https://phys.org/news/2023-08-viewpoint-guardrails-geoengine...
Viewpoint: Without more research and guardrails, geoengineering is a costly gamble, with potentially harmful results
While theoretically capable of cooling the planet, solar radiation management could have drastic side effects by shifting patterns of global atmospheric circulation that can lead to more extreme weather events. It also does nothing to reduce harms of excess greenhouse gases, including ocean acidification. A 2022 study published in the scientific journal Nature predicted that stratospheric aerosol injection could alter global precipitation patterns and reduce agricultural productivity.
Beyond safety, another important question involves accountability. There's a good chance that geoengineering meant to help one region would harm others. That's because ocean and weather systems are globally interconnected.
As Riley Duren, a systems engineer from NASA, said in an interview with the space agency: "Geoengineering is not a cure. At best, it's a Band-Aid or tourniquet; at worst, it could be a self-inflicted wound."