A crucial system of ocean currents is slowing. It’s already supercharging sea level rise in the US.

CNN - May 16th, 2025

A recent study published by the American Association for the Advancement of Science has revealed that the weakening of the Atlantic Meridional Overturning Circulation (AMOC) has significantly increased flooding along the northeastern coast of the United States. The AMOC, which functions as a massive oceanic conveyor belt, plays a pivotal role in distributing heat, salt, and freshwater globally, thus affecting climate, weather, and sea levels. From 2005 to 2022, it was found that up to 50% of flooding events in the region were linked to a weakened AMOC, contributing to as many as eight flood days annually. The study's findings were derived from tide gauge data and complex ocean models, which also allow for forecasting future coastal flooding events up to three years in advance.

The implications of this study are profound, as it highlights the urgent need to understand and predict coastal flooding driven by a weakening AMOC, especially in the context of global climate change. As the AMOC weakens, it affects the Gulf Stream's flow, exacerbating sea level rise along the coast. This research is crucial for planning and mitigating the severe impacts of rising seas, which threaten infrastructure and lives in coastal areas. While the study underscores the potential catastrophic effects of an AMOC collapse, experts emphasize that the science is still evolving, and more research is needed to accurately predict future scenarios. Nonetheless, the study provides actionable insights into the day-to-day impacts of AMOC changes, assisting society in preparing for and responding to climate-driven challenges.

Climate Change Sea Level Rise Amoc Atlantic Meridional Overturning Circulation Northeast Us Flooding American Association For The Advancement Of Science Liping Zhang David Thornally Gerard Mc Carthy

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RATING

7.2

Fair Story

Consider it well-founded

The article provides a scientifically grounded exploration of the weakening Atlantic Meridional Overturning Circulation (AMOC) and its impact on flooding in the US Northeast. It effectively communicates complex scientific concepts and highlights the urgency of addressing climate change impacts. However, the article could benefit from a broader range of perspectives, including those of policymakers and local communities, to enhance balance and engagement. While the article relies on credible sources and presents timely information, it could improve transparency by detailing study limitations and model specifics. Overall, the article successfully raises awareness of a critical environmental issue, with potential implications for public opinion and policy discussions.

Accuracy

The story presents a scientifically grounded claim about the weakening of the Atlantic Meridional Overturning Circulation (AMOC) and its impact on flooding in the US Northeast. The factual basis for the weakening of AMOC and its contribution to sea level rise is supported by scientific studies. However, the claim that up to 50% of flooding events are driven by a weaker AMOC between 2005 and 2022 requires further verification through historical data and model accuracy assessments. Additionally, while some studies suggest stability in the AMOC, others point to potential future weakening, indicating a need for more consensus in the scientific community.

Balance

The article predominantly focuses on the scientific perspective regarding AMOC's impact on sea level rise and flooding, featuring quotes from scientists involved in the study and external experts. However, it lacks perspectives from policymakers, local communities affected by flooding, or climate change skeptics, which could provide a more balanced view. The emphasis on scientific findings may lead to an impression of consensus, although there are differing opinions within the scientific community about the AMOC's future behavior.

Clarity

The article is well-structured and uses clear language to explain complex scientific concepts related to the AMOC, sea level rise, and flooding. It effectively breaks down the study's findings and implications for the general reader. However, the inclusion of more background information on the AMOC and its historical context could improve comprehension for those unfamiliar with the topic.

Source quality

The article cites credible sources, including scientists from reputable institutions such as the Geophysical Fluid Dynamics Laboratory and University College London. The study's publication in the American Association for the Advancement of Science adds to its credibility. However, the article could benefit from direct references to the original study and more diverse sources to enhance the depth of reporting.

Transparency

The article provides a clear explanation of the study's findings and methodology, mentioning the use of tide gauges and ocean models. However, it could improve transparency by detailing the study's limitations and the specific models used. Additionally, disclosing potential conflicts of interest or funding sources for the research would enhance transparency.