Ancient clam shells help scientists study ocean currents’ stability
Scientists are using centuries-old clam shells to study the Atlantic Ocean’s circulation system, which could face collapse due to climate change.
Sarah Kaplan reports for The Washington Post.
In short:
- The Atlantic Meridional Overturning Circulation (AMOC), vital for global climate regulation, could shut down due to warming and Greenland ice melt.
- Arctica clam shells, which record centuries of oceanic conditions, provide new insights into past changes in AMOC and potential future tipping points.
- Researchers warn the AMOC is showing signs of instability that could have significant global impacts, including extreme weather and sea level rise.
Key quote:
“You can tell it is losing stability. The environment is really struggling to maintain equilibrium.”
— Beatriz Arellano-Nava, climate researcher at the University of Exeter
Why this matters:
The AMOC’s collapse could lead to severe weather disruptions, coastal flooding and agricultural instability, affecting billions of people. Studying clams’ ancient records offers a rare glimpse into the ocean’s history, helping scientists predict and potentially mitigate future climate crises.
Learn more: Scientists predict collapse of key Atlantic Ocean current by 2057
