Hurricane!

If you wanted to know how the global warming story plays out, you can just watch Patlabor: The Mobile Police.

A little backstory: at the end of the twentieth century, global warming caused enormous flooding issues in Japan, and the government responding by creating "labor" construction forces to rebuild and protect. Eventually, these Labors were also used for police and other forces, yielding the quasi-post-apocalyptic, futuristic series we have here. In this volume, Noa and Kanuka discover a subterranean city and are stuck there, alone and without the ability to summon backup. What's more, they are not, of course, alone down there, and the prehistoric dragon creature down there with them is hungry, very hungry.