Sea-level rise could flood hundreds of millions more than expected

Princeton researchers found that far more people are living closer to the ocean than previously believed.

Photograph of Rangapani Road, Asham Bosti, Bangladesh
MD EFTHAKHAR UI ALAM / UNSPLASH

By the end of this century, rising oceans will almost certainly flood the lands where tens of millions of people live as accelerating climate change warms the waters and melts ice sheets.

But precise estimates of the vulnerable populations depend on precise measurements of the planet’s topography, to understand just how close to sea level communities have settled.

A new study that seeks to correct for known errors in earlier elevation models finds that researchers might have been undercounting the number of people exposed to rising tides by hundreds of millions. That’s three to four times more people than previously projected, depending on the specific scenarios.

If these higher estimates prove correct, it will dramatically increase the damages and casualties from sea-level rise, swell the costs of adaption efforts like constructing higher seawalls, and escalate mass migration away from the coasts.

Many of the estimates to date have relied on essentially a three-dimensional map of the planet produced from a radar system that flew on board NASA’s space shuttle Endeavour in 2000. SOURCE

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 )

Google photo

You are commenting using your Google 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 )

Connecting to %s