A New Coast Annotated Table of Contents Introduction Major hurricanes have caused devastation along the American coast. In 2017, Hurricanes Harvey, Irma, and Maria caused death and extensive damage in Texas, Florida, and Puerto Rico. And in 2018, Hurricane Michael pounded the Florida Panhandle, and Hurricane Florence hit North Carolina. New science indicates that, as the climate warms, coastal storms are likely to be more intense and damaging than in past years. In addition, recent research indicates that climate change is driving an acceleration in the rise of sea levels globally and especially along the American coast. More severe storms and rising seas will deliver a one-two punch to the coast, putting millions of people and hundreds of communities at risk of temporary flooding and permanent inundation. A New Coast make the case that the United States needs to devise and implement a national program to better respond to the challenges of more severe coastal storms and rising seas along the American coast. Why is a national program needed? • • • •
The new science defining the risks is strong (see Part 1). The scale and costs of the problem—measured in terms of impacts on communities, critical infrastructure, ecosystems, and private assets—are significant and occur around the entire coast (see Part 2). The existing programs for flood insurance, disaster assistance, and coastal management are struggling to keep up with the costs of major coastal storms and are not set up to deal with the permanent inundation that comes with rising seas (see Part 3). States, local governments, and businesses are making some headway in responding to these challenges, but the legal, social, and economic issues they face are new and complex, and they need the support and financial assistance that a national program can provide (see Part 4).
Part 5 outlines key elements of a new national program to address these risks, along with steps to support a campaign to put the issue on the national agenda. Part I – A Warming Climate Drives Coastal Storms and Rising Seas In Brief: The science behind projections of more severe coastal storms and rising seas is sound, and the uncertainty of past years is now greatly reduced. Separate from well-known changes like tides or coastal erosion, a warming climate is working by somewhat different processes to make coastal storms more intense and to raise sea level, delivering a one-two punch to the coast. Coastal storms will become more damaging in terms of storm surge and rainfall. Sea level along the American coast is almost sure to rise several feet, and by 2100 and beyond, it may well rise much higher. The bottom line is that sound science is pointing to a real problem for the coast.
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