Science

Fast and Getting Faster: The Verdict on Sea Level Rise from the Latest National Climate Assessment

Sea level rose more rapidly during the 20th century than during any of the previous 27 centuries, and humans bear the lion’s share of the responsibility for that rise.

That’s just one of the sobering takeaways from the U.S. Global Change Research Program’s Climate Science Special Report (CSSR), released today, but leaked to the New York Times in August. Billed as Volume 1 of the Fourth National Climate Assessment (NCA), the CSSR captures the state of sea level rise science and its implications for the coasts of our country.

Here are six noteworthy findings from the sea level rise section of the CSSR:

1. People are responsible for 80% of the sea level rise since 1970

The first key finding in the CSSR’s sea level rise chapter contains a bold statement that is backed up in the chapter’s main text: “Human-caused climate change has made a substantial contribution to [global mean sea level rise] since 1900 … contributing to a rate of rise that is greater than during any preceding century in at least 2,800 years…”

This finding is based on eight independent studies published in the last three years that aim to quantify the human contribution to sea level rise […]

More about sea-level rise, coastal flooding and more:

From Atlantic City to Key West: 21 beach towns that will soon be under water

Three newspapers confront one challenge: Sea-level rise is real

Water World: Sea Level Rise, Coastal Floods and Storm Surges

Satellite Snafu Masked True Sea Level Rise for Decades

The lesser-known threat from sea-level rise? Saltwater intrusion into Florida’s freshwater wells.

‘Sunny day flooding’ worsens at NC beaches — a sign sea rise is decades too soon

Summary
Article Name
Fast and Getting Faster: The Verdict on Sea Level Rise from the Latest National Climate Assessment
Description
Vol. 1 of the 4th National Climate Assessment (NCA) captures the state of human-caused sea level rise and its implications for the coasts of our country.
Author
Publisher Name
Union of Concerned Scientists
Publisher Logo

Recent Posts

Conservation.gov — Showcasing, Supporting Rapid Acceleration of Local Efforts to Conserve, Protect and Restore USA Lands and Waters

New hub will connect communities with resources and funding available through President Biden’s Investing in…

17 hours ago

Ocean Waves Mist Decades-Old PFAS into the Atmosphere

Sea spray rereleases large amounts of PFAS from the ocean into the atmosphere. Credit: Pexels/Jess Loiterton…

2 days ago

Meet the Las Vegas teens facing Western drought head on

(LtoR) Katie Kim, Fisher Parry and Kira Anderson with the Southern Nevada Water Authority's Youth…

3 days ago

Climate Change’s ‘Physical Risks’ Are Catching Up With Banks

A container ship navigates through the Miraflores locks of the Panama Canal on Nov. 3. Drought…

4 days ago

US lawmakers Elizabeth Warren and Ro Khanna seek to ban trade in water rights

Private investors are poised to profit from water scarcity in the west. Photograph: Rich Pedroncelli/AP Bill…

4 days ago

No birdsong, no water in the creek, no beating wings: how a haven for nature fell silent

Bernie Krause ‘out there and listening to the soundscapes’ in Sugarloaf Ridge state park. Photograph: Cayce…

5 days ago