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Original Research Papers

A Study of the zonally asymmetric tropospheric forcing of the austral vortex splitting during September 2002

Authors:

Dieter Peters ,

Leibniz-Institut für Atmosphärenphysik an der Universität Rostock e.V., Schlossstraße 6, D-18225 Ostseebad Kühlungsborn, Mecklenburg, DE
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Pawel Vargin,

Central Aerological Observatory, Dolgoprudny, Moscow region, RU
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Heiner Körnich

Department of Meteorology, Stockholm University, SE
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Abstract

In September 2002, the first observed austral major warming was mainly characterized by a polar vortex splitting in the middle and upper stratosphere together with an ozone hole splitting. From our synoptic investigation based on ECMWF analyses, we establish the hypothesis that lower tropospheric processes at polar latitudes are primary responsible for the vortex splitting.

Over the coastline of Antarctica two regions occurred, one over the Ross shelf ice and the other over the Weddell shelf ice, where an enlarged tropospheric wave-activity generation in connection with an anticyclonic anomaly took place. The wave-activity flux was eastward and upward into the stratosphere, and was linked with an increasing ultra-long wave 2, which could be the primary reason for the vortex splitting in the stratosphere. In the troposphere, two Rossby wave trains have been identified which contribute mainly to the maintenance of the anticyclonic anomalies over both wave-activity generation regions.

How to Cite: Peters, D., Vargin, P. and Körnich, H., 2007. A Study of the zonally asymmetric tropospheric forcing of the austral vortex splitting during September 2002. Tellus A: Dynamic Meteorology and Oceanography, 59(3), pp.384–394. DOI: http://doi.org/10.1111/j.1600-0870.2007.00228.x
  Published on 01 Jan 2007
 Accepted on 12 Dec 2006            Submitted on 15 Mar 2006

References

  1. Allen , D. R. , Bevilacqua , R. M. , and Nedoluha , G. E. 2003 . Unusual stratospheric transport and mixing during the 2002 Antarctic. Geophys. Res. Lett . 30 , doi: https://doi.org/10.1029/2003GL017117 .  

  2. Chang , E. K. M. 1993 . Downstream development of Baroclinic waves as inferred from regression analysis. J. Atmos. Sc i . 50 , 2038 – 2053 .  

  3. Charlton , A. J. , O’Neill , A. , Lahoz , W. A. , and Berrisford , P. 2005 . The splitting of the stratospheric polar vortex in the southern hemisphere, September 2002: Dynamical evolution. J. Atmos. Sc i . 62 , 590 – 602 .  

  4. Charney , J. and Drazin , P. G. 1961 . Propagation of planetary-scale disturbances from the lower in to the upper atmosphere . J. Geophus. Res . 66 , 83 – 109 .  

  5. Baldwin , M. , Hirooka , T. , O’Neill , A. , and Yoden , S. 2003 . Major strato-spheric warming in the southern hemisphere in 2002: dynamical aspects of the ozone hole split . SPARC Newsletter No . 20 , 24 – 26 .  

  6. Bretherton , C. S. , Smith , C. S. , and Wallace , J. M. 1992 . An intercomparison of methods for finding coupled patterns in climate data . J. Climate 5 , 541 – 560 .  

  7. Gray , L. , Norton , W. , Pascoe , Ch. , and Charlton , A. 2005 . A possible influence of equatorial winds on the September 2002 southern hemisphere sudden warming event. J. Atmos. Sc i . 62 , 651 – 667 .  

  8. Harnik , N. , Scott , R. K. , and Perlwitz , J. 2005 . Wave Reflection and Focusing prior to the Major Stratospheric Warming of September 2002. J. Atmos. Sci . 62 , 640 - 650 .  

  9. Karoly , D. J. 1989 . Southern hemisphere circulation features associated with El Nino-Southern oscillation events . J. Climate 2 , 1239 – 1251 .  

  10. Kodera , K. and Yamada , K. 2004 . Impact of the SH major stratospheric warming on the Hadley circulation: A case study . Meteorol Geophys 54 , 111 – 116 .  

  11. Kräger , K. , Naujokat , B. , and Labitzke , K. 2005 . The Unusual Mid-winter Warming in the Southern Hemisphere Stratosphere 2002: A Comparison to Northern Hemisphere Phenomena. J. Atmos. Sc i . 62 , 603 – 613 .  

  12. Kushner , P. J. and Polvani , L. M. 2005 . Avery large, spontaneous strato-spheric sudden warming in a simple AGCM: A prototype for the southern hemisphere warming of 2002? J. Atmos. Sc i . 62 , 890 – 897 .  

  13. Labitzke , K. and Naujokat , B. 2000 . The lower Arctic stratosphere in winter since 1952. SPARC Newslett., No. 15, SPARC Office, Toronto, ON, Canada, 11 - 14 .  

  14. Manney , G. L. , Sabutis , J. L. , Allen , D. R. , Lahoz , W. A. , Scaife , A. A. , and co-authors. 2005. Simulations of dynamics and transport during the September 2002 Antarctic major warming. J. Atmos. Sci . 62 , 690 - 707 .  

  15. Matsuno , T. 1971 . A dynamical model of stratospheric sudden warming. J. Atmos. Sc i . 28 , 1479 – 1494 .  

  16. Nakamura , H. and Wallace , J. M. 1990 . Observed changes in baroclinic wave activity during the life cycles of low-frequncy circulation anomalies, J. Atmos. Sc i . 47 , 1100 – 1116 .  

  17. Nakamura , H. , Nakamura , M. , and Anderson , J. L. 1997 . The role of high-and low-frequency dynamics in blocking formation, Mon. Weather Re v . 125 , 2074 – 2093 .  

  18. Newmann , P. A. and Nash , E. R. 2005 . The Unusual Southern Hemisphere Stratosphere Winter of 2002. J. Atmos. Sc i . 62 , 614 – 628 .  

  19. Nishii , K. and Nakamura , H. 2004 . Tropospheric influence on the diminished Antarctic ozone hole in September 2002, Geophys. Res. Lett . 31 , doi: https://doi.org/10.1029/2004GL019532 .  

  20. Orsolini , Y. J. , Randall , C. E. , Marmey , G. L. , and Allen , D. R. 2005 . An Observational Study of the Final Breakdown of the Southern Hemisphere Stratosphere Vortex in 2002. J. Atmos. Sc i . 62 , 735 – 747 .  

  21. Peters , D. and Ziilicke , Ch. 2006 . Atmospheric angular momentum balance for the southern hemisphere during the polar vortex breakup of September 2002 . Tellus 58A , 508 – 519 , DOI: https://doi.org/10.1111/j.1600-0870.2006.00187.x .  

  22. Plumb , R. A. 1981 . Instability of the disturbed polar night vortex: A theory pf stratospheric warmings. J. Atmos. Sc i . 38 , 2514 – 2531 .  

  23. Plumb , R. A. 1985 . On the Three-Dimensional Propagation of Stationary Waves. J. Atmos. Sc i . 42 , 217 – 229 .  

  24. Randel , W.J. 1987 . Global atmospheric circulation statistics 1000-1 mb. NCAR Technical Note, NCARITN-295+STR, 255pp., Boulder, Colorado.  

  25. Renwick , J. A. and Revell , M. J. 1999 . Blocking over the South Pacific and Rossby wave propagation. Mon. Wea. Re v . 127 , 2233 – 2247 .  

  26. Sardeshmukh , P. D. and Hoskins , B. J. 1988 . The generation of global rotational flow by steady idealized tropical divergence. J . Atmos. Sc i . 45 , 1228 – 1250 .  

  27. Scaife , A. A. , Jackson , D. R. , Swinbank , R. , Butchart , N. , Thornton , H. E. , and co-authors. 2005. Stratospheric Vacillations and Major Warming over Antarctica in 2002. J. Atmos. Sci . 62 , 629 - 639 .  

  28. Scherhag , R. 1952 . Die explosionsartigen Stratosphärenerwämmngen des Spätwinters 1951/52. Berichte des Deutschen Wetterdienstes in der US-Zone 6(Nr. 38) , 51 - 63 .  

  29. Shutts , G. J. 1983 . The propagation of eddies in different jet streams: Eddy voracity forcing of blocking flow fields . Quart. J. Roy. Meteor Soc . 109 , 737 – 761 .  

  30. Simmons , A. , Hortal , M. , Kelly , G. McNally , A. , Untch , A., and co-authors. 2003 . Analyses and forecasts of stratospheric winter polar vortex breakup: September 2002 in the southern hemisphere and related events from ECMWF operations and ERA-40. ERA-40 project report series no. 5 The Library ECMWF , Reading , 28 pp .  

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