Global Warming: Sea Rise is happening, we can argue how much and how fast. Coastal Cities in danger.

http://www.washingtonpost.com/news/energy-environment/wp/2015/10/12/this-is-how-rising-seas-will-reshape-the-face-of-the-united-states/

Climate Central has created an interactive that lets you see the different scenarios for different parts of the United States.

“If we don’t cut emissions,” Strauss said, “we’re talking about losing American land [that’s] home to more people than live in any state, except for California and Texas. Home to more people than the state of Florida and New York.”

Granted, the key question is how fast this would play out; sea-level rise in 50 years is a much bigger deal to people living today than sea-level rise in 1,500 years.

“Under all scenarios, Florida has the plurality or majority of committed cities with total population greater than 100,000,” the study said. It also finds that decisions made in this century will determine whether 14 U.S. cities with populations greater than 100,000 will also be locked in for at least half of their populated areas — such cities include Jacksonville, Fla.; Norfolk; and Sacramento.

In some ways, the most troubling thing about the analysis is how the wild card — West Antarctica — makes the best case scenario a lot closer to the worst case. For instance, if West Antarctica is melting and cannot be stopped, then current emissions alone go from implying 600 at least half-flooded municipalities to more than 1,100, and from 9 million people’s current places of residence flooded to nearly 20 million.