Science In Action
Historic weather extremes revealed using tree-rings
Sep 26, 2024
Valerie Trouet, a tree-ring expert from the University of Arizona, reveals how centuries of jet stream patterns have shaped extreme weather in Europe, driving agricultural outcomes and public health crises. Andy Tomkins from Monash University discusses a fascinating theory about a dust ring encircling Earth 460 million years ago, potentially cooling the planet after an asteroid encounter. The podcast also touches on neuroendocrine cells and airway protection, illustrating the intersection of ancient climate events and contemporary science.
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Quick takeaways
- Tree-ring data reveals how the jet stream's shifts have historically influenced extreme weather and societal events across Europe.
- A proposed asteroid event 460 million years ago may have temporarily darkened Earth, impacting its climate and biological evolution.
Deep dives
The Influence of Jet Stream on Climate Patterns
The position of the jet stream significantly influences summer weather across Europe, creating contrasting conditions between regions such as the British Isles and the Balkans. Variations in the jet stream's positioning lead to extreme weather events, like the recent record heat in southeastern Europe coupled with cooler, wetter conditions in the British Isles. Researchers have utilized tree ring data to analyze historical jet stream patterns stretching back to the 14th century, revealing a consistent control of temperature and climate extremes. This investigation not only highlights past climate behaviors but also informs predictions regarding future weather patterns as global warming intensifies these dynamics.
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