Mill the Poles. The ice chips will then flow back to the equator, melting on the journey. So increasing the flow of cold back to the equator.
The water picks up equator heat, and carries that heat back towards the Poles. Sp you cool the hot lands, and warm the cold lands.
If we use a 1mx2cm steam plasma tube at 4 atmospheres, we get a constant 8.6MW of heat – from 3.7x10-19cc of regular water a year – no CO2.
And it iosn't even new knowledge. The ice caps tie up the cold at the Poles, mill those, and the cold will flow back to the hto countries on its own.
More plant life around the equator – which will be cooler and wetter. And more plant life in the low Arctic: so CO2 will be in short supply.