Articles | Volume 18, issue 11
Research article
08 Jun 2018
Research article |  | 08 Jun 2018

Bifurcation of potential vorticity gradients across the Southern Hemisphere stratospheric polar vortex

Jonathan Conway, Greg Bodeker, and Chris Cameron


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Discussed (final revised paper)

Latest update: 01 Jun 2023
Short summary
Strong westerly winds occur in the stratosphere during winter and spring. These winds, the polar vortex, limit how much air is mixed between mid- and high-latitudes. We present a new view of the polar vortex mixing barrier in the Southern Hemisphere, revealing a frequent double-walled barrier with two distinct regions of weak mixing. This double-walled structure is expected to alter the spatial and temporal variation of trace gas concentrations (e.g. ozone) across the polar vortex.
Final-revised paper