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


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Jonathan Conway on behalf of the Authors (27 Apr 2018)  Author's response    Manuscript
ED: Publish subject to technical corrections (14 May 2018) by Timothy J. Dunkerton
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