Northern hemisphere cold air outbreaks are more likely to be severe during weak polar vortex conditions

A weak stratospheric polar vortex in the Arctic leads to a disproportionally increased risk of severe cold air outbreaks over northern extratropical regions, compared to moderate outbreaks, suggest analyses of reanalysis data and climate model simulations.

Bibliographic Details
Published in:Communications Earth & Environment
Main Authors: Jinlong Huang, Peter Hitchcock, Amanda C. Maycock, Christine M. McKenna, Wenshou Tian
Format: Article in Journal/Newspaper
Language:English
Published: Nature Portfolio 2021
Subjects:
Online Access:https://doi.org/10.1038/s43247-021-00215-6
https://doaj.org/article/2fcac0dba4b6433ab9b28ed6063cdecf
Description
Summary:A weak stratospheric polar vortex in the Arctic leads to a disproportionally increased risk of severe cold air outbreaks over northern extratropical regions, compared to moderate outbreaks, suggest analyses of reanalysis data and climate model simulations.