Climate Central, of Princeton, N.J., was started in 2008 with foundation money to conduct original climate research and also to inform the public about the work of other scientists. For the sea level project, financed entirely by foundations, the group is using the Internet to publish an extensive package of material that goes beyond the scientific papers, specifying risks by community. People can search by ZIP code to get some idea of their own exposure..
The rise appears to have accelerated lately, to a rate of about a foot per century, and many scientists expect a further acceleration as the warming of the planet continues. One estimate that communities are starting to use for planning purposes suggests the ocean could rise a foot over the next 40 years, though that calculation is not universally accepted among climate scientists.
The handful of climate researchers who question the scientific consensus about global warming do not deny that the ocean is rising. But they often assert that the rise is a result of natural climate variability, they dispute that the pace is likely to accelerate, and they say that society will be able to adjust to a continuing slow rise.
Experts say a few inches of sea level rise can translate to a large incursion by the ocean onto shallow coastlines. Sea level rise has already cost governments and private landowners billions of dollars as they have pumped sand onto eroding beaches and repaired the damage from storm surges.