Extreme sea level rise image projections

Images courtesy of Climate Central

From Climate Central:

In January, NOAA published a series of new sea level rise projections for the U.S. coast. The extreme scenario reflects recent research suggesting that some segments of the Antarctic ice sheet may collapse more rapidly than scientists had previously thought, particularly if emissions of heat-trapping gases such as carbon dioxide and methane remain high.

The scenario points to 8.25 feet of global average sea level rise by the end of the century. However, local effects, including sinking land and the way that Antarctic ice loss would reshape the Earth’s gravitational field, would lead to 10 to 12 feet of rise for U.S. coastal states other than Alaska.

Images courtesy of Climate Central

This scenario would submerge land where at least three-quarters of Norfolk, Miami, and Ft. Lauderdale residents live today. New York, Boston, Virginia Beach, and St. Petersburg are among the other cities with at least 100,000 people in areas at risk. All told, more than 12 million Americans and $2 trillion in property sit below the projected water levels.

Climate Central’s report includes numbers for many more affected U.S. coastal cities and downloadable tables for all of them, as well as state-level information.

METHODOLOGY

Climate Central used NOAA’s localized extreme sea level projections for 2100, NOAA tidal models, and lidar-based (laser-based) land elevations to identify land that could fall below the future high tide line. Low-lying areas that existing levees, ridges or other features appear to isolate from the ocean at this level were excluded. Coastal area population and property value data were overlaid against the remaining at-risk areas and totaled by city, state and nationally.

KXAN.com provides commenting to allow for constructive discussion on the stories we cover. In order to comment here, you acknowledge you have read and agreed to our Terms of Service. Users who violate these terms, including use of vulgar language or racial slurs, will be banned. If you see an inappropriate comment, please flag it for our moderators to review.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s