The aerosols (particles) that make up the persistent cirrus clouds above the aviation routes in the sky are trapping heat instead of precipitating out or clearing because they overload the atmosphere’s cleaning mechanism. If we dispersed oxygen radicals or hydroxyl radicals there, they would oxidize or “age” the particles, making them larger and more water soluble which makes them removable by deposition. Geoengineering proposals are generally more toxic, so if we could shift away from always choosing toxic methods in the environment this would be preferable.

https://coincentral.com/what-is-the-environmental-impact-of-bitcoin-mining/