http://geology.com/sea-level-rise/
Set it to 1 meter rise for a worst case by the end of this century. It defaults to 7 meters which is what can happen in 400 years or so. But also keep in mind that this is showing only areas that become permanently flooded. Remember that Sandy flooded the New York subways in 2012; that was the first time a storm surge was ever that high in New York. Flooding damage is already increasing in coastal cities. We will see more of storm surge damage long before these areas become permanently flooded.
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The University of Colorado Boulder tracks sea level rise on an ongoing basis.
http://sealevel.colorado.edu/
There has been no "proving wrong" Sagebrush made that up. There are some people who just so resent education and science that they deny that information even exists. Just recognize those who hate science and refer to the vast amount of information that is now publicly available, such as UCB's sea level data.
What will happen likely depends on the city.
A lot of cities, despite being coastal, are high enough in elevation that they are unlikely to be submerged for any realistically probable sea level rise. They may see more damage from storm surges and the like, but they will not become uninhabitable, though fewer people will be willing or able to live right near the coast.
Other cities, like in the Netherlands, will build sea walls, dykes, and the like to keep the sea at bay.
Some cities, like New Orleans, are likely to be rebuilt somewhat upstream if we lose them to rising waters, because we need a city there for transportation purposes (a lot of traffic goes up and down the Mississippi river, and New Orleans is basically the interface with the sea)
Other cities may simply be abandoned if sea levels rise too far, especially in poorer countries where they don't have the resources to either rebuild or protect the city.
Global SLR estimate by the year 2100 = 3.92 Feet (1)
Elevation of US Coastal Cities (2)
Los Angeles = 126 Ft
New York City = 13 Ft
Atlantic City = 76 Ft
New Orleans = 4 Ft
Honolulu = 13 Ft
Generally cities are located high enough that the tides do not hit them. The sea level is currently rising by 3 mm/year. This equates to about an inch every 8 years. Since the little ice age, the seas have been rising by about 1-2 mm/year.
So when they are talking about moving inland, they are talking about periods of time that cover 100s of years. Scare-mongerers like make this sound really bad, but consider. How many buildings that you frequent are more than 100 years old?
They're not going to be submerged. As you said, sea level is rising slowly, at a few mm per year. Cities can adjust to that. Large parts of current Boston were underwater at the time of the Revolution.
An Arab Nomad from Opec oil has been paying Nations up to $10 billion a year to fill oceans with dry land sand to expand certain continents therefore making all coastal ocean rise. Mike
Satellite measurements say 3mm per year, Hundreds of years of tide gauges say 1.8mm per year, I believe the tide gauges.
Anyway the danger to most places is not sea level rise but subsidence and erosion,
Sea levels have been rising since the end of the ice age, and it is not something we can stop, if we cut all CO2 emissions to zero from tomorrow, sea levels would continue their slow rise for the next one hundred years, it will take another ice age to stop it.
Rivers won't be significantly affected by sea level rise. Cities that are along the coast might have some increased flooding. Places like New Orleans that is subsiding due to natural subsidence of the Mississippi Delta and artificial subsidence from pumping water has dealt with much larger drops than is anticipated by AGW, at least the reasonable projections. The dikes and levies were designed to prevent flooding. Obviously they failed in Katrina but failures increase the general knowledge. I doubt that New York or the other cities you mentioned will need dikes in your grandchildren's lifetime. People keep wanting to build near the shore because it is the most expensive and desired real estate. That causes problems when storms hit. Typically in the US, we bail out those who build in dangerous places. It leads to more building in dangerous places.
Jeff links to a Nature article about increased storm surge threat. These sorts of things are not designed to increase science knowledge. They are designed to exaggerate the threat.
"sea levels are rising slowly every year. no one denies that." No one knows that it does. University of Colorado had some studies by satellite and they were proven false. But consider these three bits of truths. Go back to paintings of the Thames, the sea level portion of it anyway, and the sea is at the same level as it is today. Some of those paintings go back to the 1400s. Go to St Augustine, FL, the oldest city on this continent, and it is the same as when the city was founded. Then go to Plymouth Rock and the sea level is the same as it was when the Pilgrims landed.
Then consider what the recent calamity howlers have to say.
Quote by Noel Brown, UN official: "Entire nations could be wiped off the face of the Earth by rising sea levels if the global warming trend is not reversed by the year 2000. Coastal flooding and crop failures would create an exodus of "eco-refugees," threatening political chaos."
Why would anyone listen to Noel and ignore the Earth itself?
It will be a long time before they get submerged. I have a feeling they are more worried about the possibilities of large floods due to such things as heightened storm surges and so on. Sea levels are currently rising at a rate of about 3mm per year.
http://sealevel.colorado.edu/
Sea levels, however, are rising at different rates in relation to the land due to various factors such as tides, subsidence, isostatic rebound, and so on.
http://tidesandcurrents.noaa.gov/sltrend...
Storm surge threats and storm surge activity are increasing.
http://www.nature.com/nclimate/journal/v...
https://ceprofs.tamu.edu/folivera/Papers...
This combined with the increasing strength of hurricanes, although hurricane frequency is expected to decline or remain stable, is expected to lead to more rainfall and flooding.
http://www.gfdl.noaa.gov/global-warming-...
In the next century, if storm surge threats and related flooding do have the increase they are expected to, those that live on coastal cities will most likely have to move as it would be less expensive to live inland rather than on the coast.
JimZ: My posts in here deal with facts, measurements and observances. You are making a claim that you can not support through scientific channels as you usually do.
sea levels are rising slowly every year. no one denies that.
the thing is, most of the biggest (and best) cities are located right next to or very close to a large body of water.
New York City - the Hudson river flows there and it is right next to the Atlantic ocean.
Los Angeles - Pacific ocean
London - North Atlantic ocean
Hong Kong - South China Sea
Sydney - South Pacific
Paris - the Seine River flows through it
i was wondering what will happen if sea level keep rising and all of these cities get submerged.
- billions, maybe even trillions of people (in the cases of countries like China) would have be move inland.
- but what happens to some countries that don't have many lakes or rivers?
since humans need water to survive, that means landlocked nations don't have much luck.
this one article claims if sea levels rise a lot new york city will be completely submerged.
what about that..........does that mean a new, big city will be built somewhere inland or maybe next to the Great Lakes to "replace" NYC?
same goes for boston, new orleans, .....san diego,........vancouver.....
what would happen in real life if new york city got completely submerged?
would new cities be built near the new coastline and new york city will be a memory?
not every state in the U.S. has that many rivers.
only a few, like Utah or Michigan have a landlocked lake or border a huge lake.
the article about sea levels really got me concerned.
If New York floods we'll have to bail out Wall Street again. Get your buckets ready.
Most of humanity lives near seacoasts. Your concerns are shared by just about every engineer in the world involved with urban infrastructure planning.
the population of new York is going to Rochester.
Ghyusee si
It will take hundreds of years to get real bad.
