Don't be too narrow sighted
Hurricanes are heat pumps. When there is excess heat on the planet, the waters tend to warm at the surface. If you cool the water, then you reduce the intensity of wind storms created by the circulating air. The problem is, that if you move the heat elsewhere, what environmental effects do you create elsewhere? What wildlife do you cause problems for (including coral)?
What would the environmental effects of operating and powering those pumps be?
It sounds more like we are seeing the effects of the acquisition of a research grant that could qualify fo the William Proxmire's Golden Fleece Award.
The reported research doesn't even suggest all the problems that pumping that water would cause - if it were reasonably possible.
I'd suggest research into keeping the excess heat from even reaching the earth. That research has already been started.
