background imageMarvin Joseph/The Washington Post

How one scientist used ‘a billion butterflies’ to predict the weather

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By illuminem briefings

· 2 min read


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

🗞️ Driving the news: Meteorologist Jagadish Shukla has spent decades proving that long-range weather forecasting — once dismissed as impossible — is achievable, even in chaotic systems like India’s monsoon
• His 1998 “billion butterfly” experiment showed that seasonal weather patterns can be predicted using stable boundary conditions like ocean temperature and vegetation
• The breakthrough changed how scientists think about weather, launching the field of dynamic seasonal prediction

🔭 The context: Born in a rural Indian village, Shukla’s early life was shaped by the unpredictability of the monsoon
• He pursued a PhD at MIT, challenging the dominant belief that forecasts beyond 10 days were meaningless
• Inspired by the “butterfly effect,” Shukla ran simulations proving that while daily weather is chaotic, seasonal outcomes can remain stable under fixed conditions

🌍 Why it matters for the planet: Shukla’s research laid groundwork for climate modeling and seasonal forecasting, helping farmers, governments, and scientists better prepare for extreme weather
• Later, he became a key figure in the 2007 IPCC report that declared human-caused climate change "unequivocal" — the report won the Nobel Peace Prize
• He has since advocated fiercely for scientific integrity in the face of fossil fuel misinformation

⏭️ What’s next: Though now retired from public institutions, Shukla continues to speak out on climate science and political accountability
• He remains a symbol of scientific resilience, especially after facing federal investigations and political attacks for challenging the fossil fuel industry

💬 One quote: “It’s a small price to pay to defend the integrity of climate science… If we don’t defend it, who will?” — Jagadish Shukla

📈 One stat: Shukla’s 1998 study proved that seasonal forecasts remained consistent even after billions of simulated changes to initial conditions — reshaping how climate models are built

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