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‘Termination shock’: cut in ship pollution sparked global heating spurs

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By illuminem briefings

· 2 min read

iluminem summarizes for you the essential news of the day. Read the full piece on The Guardian or enjoy below:

🗞️ Driving the news:
A new study reveals that the reduction of Sulphur pollution from global shipping in 2020 caused a "termination shock," significantly accelerating global heating
• The cut in pollution has been linked to the record-high ocean surface temperatures in 2023

🔭 The context:
Until 2020, shipping emissions produced particles that blocked sunlight and helped form clouds, reducing global heating
• The study estimates an additional 0.2 watts per square meter of heat trapped over the oceans, potentially doubling the warming rate since 1880

🌍 Why it matters for the planet:
This sudden reduction in cooling pollution has revealed the complex role of aerosols in climate regulation, highlighting the risks and potential impacts of geoengineering
• Understanding these effects is crucial for developing effective climate mitigation strategies

⏭️ What's next:
Further research using more sophisticated climate models is expected later in 2024 to refine the understanding of the temperature rise caused by the pollution cut
• Scientists stress the importance of addressing the root causes of global warming—fossil fuel emissions

💬 One quote:
“We did inadvertent geoengineering for 50 or 100 years over the ocean,” said Dr. Tianle Yuan, who led the study

📈 One stat:
The 2020 regulation slashed Sulphur content in fuels by 80%, reducing these cooling effects and inadvertently increasing heat trapped at the Earth's surface

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