In order to reduce the melting of polar ice, why couldn’t we use liquid nitrogen in some ways, to freeze parts of the pole’s seas?

Question

In order to reduce the melting of polar ice, why couldn’t we use liquid nitrogen in some ways, to freeze parts of the pole’s seas?

In: Physics

Answer 1

Liquid nitrogen comes from refrigerating normal air. Which uses a shitton of electricity, that a) has a CO2 footprint, b) generates more heat than the LN2 will remove.

The heat generated on the planet isn’t the problem, the sun accounts for 99.9….% of that. The problem is that the heat leaves slower because CO2 prevents it from escaping.