Simulations show increased jet stream waviness due to asymmetric rise in global temperatures

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by Bob Yirka , Phys.org

https://phys.org/news/2022-09-simulations-jet-stream-waviness-due.html

Simulations show increased jet stream waviness due to asymmetric rise in global temperatures
The stream function at an altitude of 850 mb. Credit: Woosok Moon, Baek-Min Kim, Gun-Hwan Yang, and John Wettlaufer.

A quartet of researchers, two with the Nordic Institute for Theoretical Physics and two with Pukyong National University, has created a group of simulations of changes to the jet stream under global warming. In their paper published inProceedings of the National Academy of Sciences, the group describes using math theory to describe wind motion under given circumstances to create their simulations.

Over the past several years, the jet stream has become wavier than it used to be. Both peaks and valleys have become more extreme. This has led to changes inweather patterns—some places have grown wetter and some drier, and there have also been more extended hot and cold spells around the globe. In this new effort, the researchers suspected that…

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