I heard it explained as spreading these chemicals via the use of planes which would discharge them and delay the warming hopefully long enough to buy us time to eliminate our use of fossil fuels altogether. There are considerable risks to this method in unbalancing climates throughout the world but if we do nothing the consequences could be catastrophic. Scientists are studying the feasibility of this approach as we speak.
Of course Drumpf thinks that climate change is a Chinese conspiracy so, while we wait for the Republicans and in particular that idiot to be run out of Dodge, the United States we will be working backwards until an administration that believes in science takes control of the reins.
It isn't just the U.S. it is also Russia and Saudi Arabia, both also large fossil fuel consumers and proponents, who are going to push back on hurrying to eliminate fossil fuel use.
Our time is up.