A climate nightmare lurks in the Atlantic. Europe is starting to pay attention

illuminem summarises for you the essential news of the day, reviewed by our editorial team. Read the full piece on POLITICO or enjoy below:

🗞️ Driving the news: European governments are beginning to prepare for the possibility that the Atlantic Meridional Overturning Circulation (AMOC) could weaken substantially as the climate warms
• Iceland has classified a potential collapse as a national-security risk, while Finland, the Netherlands and the U.K. are assessing potential impacts and improving monitoring

🔭 The context: The AMOC transports warm tropical water northward and helps moderate Europe’s climate. Melting Greenland ice and increased freshwater entering the North Atlantic could weaken the circulation
• The IPCC says the AMOC is very likely to weaken this century, although an abrupt collapse before 2100 was considered unlikely in its 2023 assessment
• More recent studies have produced a range of estimates, leaving the timing and probability of a tipping point highly uncertain

🌍 Why it matters for the planet: A major slowdown could mean colder European winters, altered rainfall, drought, higher regional sea levels and greater pressure on agriculture, infrastructure and coastal defenses
• Scientists stress that reducing greenhouse-gas emissions remains the main way to lower the risk of triggering further AMOC disruption

⏭️ What’s next: Governments are investing in early-warning systems and long-term ocean observation
• The U.K. has committed £81 million, while EU ocean-observation funding has reached €220 million
• Researchers argue that sustained Atlantic-wide monitoring will require substantially more

💬 One quote: Iceland’s climate minister Jóhann Páll Jóhannsson said: “It is irresponsible to wait for absolute certainty before preparing”

📈 One stat: 24–39% — the IPCC’s projected range for the AMOC’s weakening below pre-industrial strength by 2100

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