If we say that spraying sulfur dioxide in the upper atmosphere sounds a little dangerous, and sending a super mirror to space is too expensive, then scientists have another solution that can be implemented on the ground, that is, white water in the Arctic Ocean. Plastics, these floating white plastics greatly increase the reflection of the sun's rays, thereby cooling the earth. Compared to dark surfaces, the white surface has a much better reflectivity to the sun, which is why people wear more light clothes in summer. The reason is that as the temperature rises, the ice in the Arctic Ocean will melt, which will reduce the surface albedo, reduce the amount of reflected sunlight, and further increase the temperature of the Earth. This is a vicious cycle. If we replace the Arctic Ocean with a large number of white plastic floats. The ice and snow may then break this vicious circle and curb the warming of the earth. But since then, the Arctic Ocean’s ecological and biological living environment is bound to be seriously affected. The prospects are unpredictable.
A possible revision strategy for this scenario is this: Replace the plastics with foam! The white foam can act like the same sunlight, cooling the ocean and the world. But then we might have to use a giant water pump. Connecting reservoirs, or directly on countless large barges, let them run around the world and continue to produce white foam on the surface of the water. But to be honest, it is simply unimaginable to contaminate the oceans around the world. The energy will be unacceptable.