Este é o Ark Liberty de Will Bradley
Do resumo do Google Livros:
In 2084, melting polar caps and burning rain forests force survivors to live in Arks, self-contained biomes. Against orders, Stefan Li staffs an undersea Ark with as many refugees as he can before its ports are sealed. When Li is killed, a computer genius transfers Li's persona into the Ark's computer net--and Li becomes the Ark.