New data raises questions about how much the Earth has warmed

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illuminem summarises for you the essential news of the day. Read the full piece on CNN or enjoy below:

🗞️ Driving the news: Scientists have released a new global temperature dataset suggesting the Earth may have warmed more than previously estimated
• The dataset, known as GloSAT, extends global temperature records back to 1781, rather than the commonly used 1850 baseline

🔭 The context: Most climate targets measure warming from an 1850–1900 “preindustrial” reference point
• Greenhouse gases rose about 2.5% between 1750 and 1850, likely causing early human-driven warming that current benchmarks miss
• GloSAT indicates roughly 0.09°C of human-caused warming occurred before 1850, aligning with IPCC estimates
• Volcanic eruptions in the early 1800s temporarily cooled the planet, complicating attribution

🌍 Why it matters for the planet: This research suggests humans may have already pushed the climate system further than assumed
• A higher total warming burden reinforces the urgency of cutting emissions to avoid irreversible impacts
• Rising seas, ecosystem loss, and extreme weather, already visible in vulnerable regions like coastal Asia and small island states, are consistent with a planet under greater stress

⏭️ What’s next: Scientists say climate targets remain valid but must be interpreted carefully
• The findings will inform future assessments of climate risk, carbon budgets, and Earth system tipping points

💬 One quote: “It changes our perception of how far we have already pushed the climate system,” said climate scientist Peter Thorne

📈 One stat: The new research estimates ~0.1–0.2°C of additional warming occurred before 1850 due to early human activity

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