Peneliti mengusulkan pembangunan bendungan di Selat Bering untuk menstabilkan AMOC

Tim ilmuwan Belanda telah mempresentasikan simulasi yang menunjukkan bahwa bendungan masif di Selat Bering dapat membantu mencegah keruntuhan Sirkulasi Pembalikan Meridional Atlantik (AMOC). Usulan tersebut dipaparkan dalam konferensi geosains besar di Wina bulan ini.

Jelle Soons dan Henk Dijkstra dari Utrecht University menjalankan model iklim canggih yang mengindikasikan bahwa menutup selat tersebut akan memperkuat AMOC, terutama jika pembangunan dimulai pada tahun 2050. Penelitian mereka sebelumnya dengan resolusi yang lebih rendah menghasilkan hasil yang beragam, namun simulasi superkomputer terbaru menunjukkan pemulihan sistem arus yang mengejutkan, yang membawa kondisi lebih sejuk ke Eropa utara.

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Illustration of U.S. strikes on Iranian mine-laying boats in the Strait of Hormuz amid Iran's closure claim and shipping attacks.
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Iran says it has closed the Strait of Hormuz as U.S. reports strikes on suspected minelayers amid rising shipping attacks

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Iran has claimed the Strait of Hormuz is closed after a surge of attacks on commercial vessels since late February, while the U.S. military says it destroyed Iranian mine-laying boats near the vital oil chokepoint—an escalation that has heightened fears of prolonged disruption to energy and trade flows.

A new modelling study indicates that a weakening Atlantic Meridional Overturning Circulation is causing the Gulf Stream to drift northwards, with satellite data showing a 50-kilometre shift over 30 years. Researchers suggest this gradual change could precede an abrupt move serving as an early warning for a potential AMOC collapse. Such a collapse might lead to drastic cooling in Europe, though timelines remain uncertain.

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A new study warns that a shutdown of the Atlantic Meridional Overturning Circulation (AMOC) would trigger the release of up to 640 billion tonnes of carbon dioxide from the deep Southern Ocean near Antarctica. This feedback effect could raise global temperatures by an additional 0.2°C. Researchers at the Potsdam Institute for Climate Impact Research highlight the risk as humanity's emissions continue to weaken the key ocean current.

TotalEnergies CEO Patrick Pouyanné said on Monday that a toll would be preferable to a prolonged closure of the Strait of Hormuz, through which 20% of global oil and gas passes. He spoke at a conference in Washington on the sidelines of the IMF and World Bank spring meetings. He warned of supply tensions if the situation lasts beyond three months.

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Escalation of conflict between Iran, the United States, and Israel has led Iran to order the closure of the Strait of Hormuz, halting tanker traffic and driving global oil prices above US$80 per barrel. The effects extend to Europe, which is now reconsidering plans to end Russian gas imports, while Indonesia pushes for de-escalation via the D-8 organization and assures stable fuel supplies.

Prime Minister Sanae Takaichi expressed 'serious concern' over attacks on vessels around the Strait of Hormuz during an online G7 leaders' meeting, urging early de-escalation. Japan plans to lead in releasing oil reserves to avert an economic crisis through international coordination.

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US and Israeli forces struck Iran on February 28, prompting Iran's Islamic Revolutionary Guard Corps to declare the Strait of Hormuz unsafe for commercial passage. Vessel traffic fell by roughly 70% within hours. The closure compounds pressures on fashion supply chains already strained by Red Sea disruptions, tariffs, and rising freight costs.

 

 

 

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