While sulfur particles may help offset some affects global warming the down side of putting more sulfur particles in the atmosphere is worse. I am surprised how we seem to have forgotten when large swaths of North American and European forests were dying off from the acid rain. Regulations requiring the use of low sulfur coal or sulfur dioxide treatment in power plants along with the use of ULSD in vehicles helped mitigate that issue.
To believe acid rain falling in the oceans does not have any effect is foolish.