Jet stream changes since 1960s linked to more extreme weather, say researchers

What at first sounds interesting hides some Mannian Frankenstein stitching;
The unprecedented character of the late twentieth century increase is independent of reconstruction scaling period (Supplementary Fig. 8), but we recognize that our NAJ reconstruction ends in 1978 and thus does not itself register the increase.
https://www.nature.com/articles/s41467-017-02699-3
I’ll go back to reading Hubert Lamb 😂

Tallbloke's Talkshop

Wavy jet stream
[image credit: BBC]
The team say they have found ‘a strong driver of climate extremes in Europe for the last 300 years’, which obviously pre-dates the Industrial Revolution and its ’emissions’ by a wide margin.

Increased fluctuations in the path of the North Atlantic jet stream since the 1960s coincide with more extreme weather events in Europe such as heat waves, droughts, wildfires and flooding, reports a University of Arizona-led team.

The research is the first reconstruction of historical changes in the North Atlantic jet stream prior to the 20th century, reports Phys.org.

By studying tree rings from trees in the British Isles and the northeastern Mediterranean, the team teased out those regions’ late summer weather going back almost 300 years—to 1725.

“We find that the position of the North Atlantic Jet in summer has been a strong driver of climate extremes in Europe for…

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