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Why Is Modeling Climate More Complex Than Forecasting Weather?

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Image of spiral cloud formation swirling over the ocean and islands.
Satellite image of Hurricane Matthew. Photo: NASA Goddard

In classrooms across the world, students learn that weather is what’s happening at a particular moment, while climate is the long-term pattern. 

And yet, climate is more than long-term weather. That means that researchers who build mathematical models of Earth’s climate have to account for many variables that meteorologists can safely ignore. For example, a slight change in global cloud cover makes relatively little difference to next week’s weather forecast, but such a change could fundamentally alter the climate 30 years in the future. Due to the chaotic nature of the climate system, small differences can cause radically different futures…

Visit Columbia Engineering to read the rest of the story.

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Collage of Turkiye beach scene and Columbia University Campus with text: UN Climate Change Conference COP31, Antalya, Turkiye, Nov 9-20, 2026

COP31, the 2026 United Nations Climate Change Conference, aims to advance dialogue, strengthen consensus, and accelerate climate action on a global scale. From November 9–20, 2026 in Antalya, Türkiye, heads of state, ministers, scientists, business leaders, and civil society will gather to advance efforts in emission targets, climate finance, and adaptation and resilience. Once again, our experts, students, and global thought leaders from Columbia Climate School and across Columbia University are contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More

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