Within a generation or two sea level rise is going to really start to affect most coastal nations. Alreadyit is having an affect on small island nations with coral atolls being inundated and their fresh water lenses being contaminated by salt water. But developed countries will also feel the pain such as the predicament facing Miami in Florida. This is a timely article on what the future holds for Miami:
By Harold R. Wanless, University of Miami
It is amazing for me to see the very aggressive building boom underway in south Florida; on the beaches and barrier islands, throughout downtown and in the low western areas bordering the Everglades. They are building like there is no tomorrow. Unfortunately, they are right.
The US National Oceanic and Atmospheric Administration (NOAA) published its assessment of sea level rise in 2012 as part of the National Climate Assessment. Including estimates based on limited and maximum melt of the Greenland and Antarctic ice sheets, it anticipated a raise of 4.1 to 6.6ft (1.25 to 2m) by 2100, reaching 2ft (0.6m) by around 2050 and 3ft (0.9m) by around 2075.
This degree of sea level rise would make nearly all the barrier islands of the world uninhabitable, inundate a major portion of the world’s deltas, upon which hundreds of millions of people live, and leave low-lying coastal zones like southeast Florida increasingly difficult to maintain infrastructure services for and increasingly vulnerable to hurricanes and storms.