Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 20
Articles | Volume 25, issue 20
https://doi.org/10.5194/acp-25-13651-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-13651-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 20
Research article
 | 
24 Oct 2025
Research article |  | 24 Oct 2025

Role of in situ-excited planetary waves in polar vortex splitting during the 2002 Southern Hemisphere sudden stratospheric warming event

Ji-Hee Yoo and Hye-Yeong Chun

Viewed

Total article views: 3,770 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
2,797 795 178 3,770 387 132 259
  • HTML: 2,797
  • PDF: 795
  • XML: 178
  • Total: 3,770
  • Supplement: 387
  • BibTeX: 132
  • EndNote: 259
Views and downloads (calculated since 14 Mar 2025)
Cumulative views and downloads (calculated since 14 Mar 2025)

Viewed (geographical distribution)

Total article views: 3,770 (including HTML, PDF, and XML) Thereof 3,759 with geography defined and 11 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Saved (final revised paper)

Latest update: 25 Jun 2026
Download
Short summary
This study revisits the Southern Hemisphere's only major sudden stratospheric warming in September 2002, marked by an unprecedented polar vortex split. In addition to upward-propagating planetary wave 2 (PW2), westward PW2 generated in-situ by barotropic–baroclinic instability, contributed to the vortex split. Unstable PW2 growth resulted from nonlinear wave-wave interactions and over-reflection. Vortex destabilization occurred as the anomalously poleward-shifted vortex reversed to easterlies.
Read more
Share
Altmetrics
Final-revised paper
Preprint