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

I wonder how much that would cost. Because I work at a place where liquid nitrogen is used. Every week or two it arrives in a tanker truck. It costs $100,000 just to refill our tank. It’s maybe 1000L tank?