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past climatesScienceDaily
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78% Informative
University of Arizona professor Valerie Trouet studies tree-rings to gather clues about what past climates were like.
The team published its results -- the first reconstruction of the jet stream over the past 700 years -- on Tuesday in the journal Nature .
The findings provide critical data to improve climate models that rely on climate models.
Scientists have observed a trend showing the jet stream is gradually shifting northward, independent of its seasonal or more short-term variations.
The findings also set a precedent for a future trajectory of jet stream variation and extreme weather events.
"It gives you a preview of the kinds of extreme events and societal outcomes we could expect if that trajectory continues," researcher says.
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