> It aims to increase the albedo of Earth by creating more clouds over the oceans e.g. by spraying seawater. Sort of; what we're usually doing, in general, is

> It aims to increase the albedo of Earth by creating more clouds over the oceans e.g. by spraying seawater. Sort of; what we're usually doing, in general, is increase the aerosol burden which in turn increases the total number of nuclei available to form clouds. Given that the total liquid water content in a cloud system is fixed (i.e. controlled by factors that are harder for us to influence directly), this leads to a mixture of consequences: 1. The total number of cloud droplets increases 2. The average cloud droplet size decreases Both (1) and (2) alone tend to increase the albedo of the cloud. They also produce secondary effects, e.g. they can suppress the formation of precipitation or modify microphysical properties that lead to clouds sticking around longer, thereby further increasing their radiative effect (more SW radiation reflected back to space and possibly more LW radiation at lower radiating heights).