Can liquid nitrogen be used to stop dry ice from sublimating? It's cold temperature can go below -346�F?

I want to make the worlds first manmade iceberg. I think it is possible. It can be the size of a large ship, and inside filled with dry ice and liquid nitrogen. My plan is to stabilize the cold substances so the artic will always remain cold. Solar panels can provide energy resources, along with pressure from the gas that is used to generate electricity and recycled to recaptured the gas into dry ice. This plan will halt Global Warming. Excess CO2 in the atmosphere can be used as a fuel resource for the Space program because CO2 can be split into 2CO which is a fuel. This will give us unlimited fuel for space travel