Here is one new article on U.S. climate migration modeling, but I wasn’t able to access the conclusions. Going back to this 2020 article, which at least lets you stare at the pictures, major coastal cities like greater Boston, greater New York/New Jersey, Philadelphia, D.C., Jacksonville, Miami, and of course New Orleans are going to be in serious trouble by 2100. Population simulations show a lot of people just migrating inland a county or two, so maybe that is the form the evolution of our cities will take if sea level rise is relatively slow and gradual – protection of a few iconic/historical coastal areas perhaps, coupled with intensifying suburban sprawl in surrounding counties within the metro area? This sounds relatively undramatic, although bland and uninteresting and wasteful of both land and energy. Land use policies, such as zoning and green belts, could be overhauled now in anticipation, or we can just let this happen willy nilly.

It is not clear to me if these articles consider immigration, but I imagine there will be immigration pressure and we could also think about how to handle that in a smart way – which luckily our political system is just awesome at!