Articles | Volume 24, issue 3
https://doi.org/10.5194/npg-24-379-2017
https://doi.org/10.5194/npg-24-379-2017
Research article
 | 
25 Jul 2017
Research article |  | 25 Jul 2017

Insights into the three-dimensional Lagrangian geometry of the Antarctic polar vortex

Jezabel Curbelo, Víctor José García-Garrido, Carlos Roberto Mechoso, Ana Maria Mancho, Stephen Wiggins, and Coumba Niang

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Short summary
Lagrangian coherent structures have supported the description of transport processes in fluid dynamics. In this work we use the M function to provide new insights into the 3-D Lagrangian structure of the southern stratosphere. Dynamical systems concepts appropriate to 3-D, such as normally hyperbolic invariant curves, are discussed and applied to describe the vertical extension of the stratospheric polar vortex and its evolution.