• Black, R. X., , and B. A. McDaniel, 2007: Interannual variability in the Southern Hemisphere circulation organized by stratospheric final warming events. J. Atmos. Sci., 64, 29682974.

    • Search Google Scholar
    • Export Citation
  • Charney, J. G., , and P. G. Drazin, 1961: Propagation of planetary disturbances from the lower into the upper atmosphere. J. Geophys. Res., 66, 83109.

    • Search Google Scholar
    • Export Citation
  • Eyring, V., and Coauthors, 2006: Assessment of temperature, trace species, and ozone in chemistry-climate model simulations of the recent past. J. Geophys. Res., 111, D22308, doi:10.1029/2006JD007327.

    • Search Google Scholar
    • Export Citation
  • Fogt, R. L., , J. Perlwitz, , S. Pawson, , and M. A. Olsen, 2009: Intra-annual relationships between polar ozone and the SAM. Geophys. Res. Lett., 36, L04707, doi:10.1029/2008GL036627.

    • Search Google Scholar
    • Export Citation
  • Gillett, N. P., , and D. W. J. Thompson, 2003: Simulation of recent southern hemisphere climate change. Science, 302, 273275.

  • Haigh, J. D., , and H. K. Roscoe, 2009: The final warming date of the Antarctic polar vortex and influences on its interannual variability. J. Climate, 22, 58095819.

    • Search Google Scholar
    • Export Citation
  • Harnik, N., , and R. S. Lindzen, 2001: The effect of reflecting surfaces on the vertical structure and variability of stratospheric planetary waves. J. Atmos. Sci., 58, 28722894.

    • Search Google Scholar
    • Export Citation
  • Harnik, N., , J. Perlwitz, , and T. A. Shaw, 2011: Observed decadal changes in downward wave coupling between the stratosphere and troposphere in the Southern Hemisphere. J. Climate, in press.

    • Search Google Scholar
    • Export Citation
  • Hu, Y., , and Q. Fu, 2009: Stratospheric warming in Southern Hemisphere high latitudes since 1979. Atmos. Chem. Phys., 9, 43294340.

  • Johanson, C. M., , and Q. Fu, 2007: Antarctic atmospheric temperature trend patterns from satellite observations. Geophys. Res. Lett., 34, L12703, doi:10.1029/2006GL029108.

    • Search Google Scholar
    • Export Citation
  • Karpetchko, A., , E. Kyrö, , and B. M. Knudsen, 2005: Arctic and Antarctic polar vortices 1957–2002 as seen from the ERA-40 reanalyses. J. Geophys. Res., 110, D21109, doi:10.1029/2005JD006113.

    • Search Google Scholar
    • Export Citation
  • Langematz, U., , M. Kunze, , K. Krüger, , K. Labitzke, , and G. L. Roff, 2003: Thermal and dynamical changes of the stratosphere since 1979 and their link to ozone and CO2 changes. J. Geophys. Res., 108, 4027, doi:10.1029/2002JD002069.

    • Search Google Scholar
    • Export Citation
  • Lau, K. M., , and P. H. Chan, 1983: Short-term climate variability and atmospheric teleconnections from satellite-observed outgoing longwave radiation. Part II: Lagged correlations. J. Atmos. Sci., 40, 27512767.

    • Search Google Scholar
    • Export Citation
  • Lin, P., , Q. Fu, , S. Solomon, , and J. M. Wallace, 2009: Temperature trend patterns in the Southern Hemisphere high latitudes: Novel indicators of stratospheric change. J. Climate, 22, 63256341.

    • Search Google Scholar
    • Export Citation
  • McLandress, C., , A. I. Jonsson, , D. A. Plummer, , M. C. Reader, , J. F. Scinocca, , and T. G. Shepherd, 2010: Separating the dynamical effects of climate change and ozone depletion. Part I: Southern Hemisphere stratosphere. J. Climate, 23, 50025020.

    • Search Google Scholar
    • Export Citation
  • McLandress, C., , T. G. Shepherd, , J. F. Scinocca, , D. A. Plummer, , M. Sigmond, , A. I. Jonsson, , and M. C. Reader, 2011: Separating the dynamical effects of climate change and ozone depletion. Part II: Southern Hemisphere troposphere. J. Climate, 24, 18501868.

    • Search Google Scholar
    • Export Citation
  • Neff, W., 1999: Decadal time scale trends and variability in the tropospheric circulation over the South Pole. J. Geophys. Res., 104, 27 21727 251.

    • Search Google Scholar
    • Export Citation
  • Neff, W., , J. Perlwitz, , and M. Hoerling, 2008: Observational evidence for asymmetric changes in tropospheric heights over Antarctica on decadal time scales. Geophys. Res. Lett., 35, L18703, doi:10.1029/2008GL035074.

    • Search Google Scholar
    • Export Citation
  • Pawson, S., , R. S. Stolarski, , A. R. Douglass, , P. A. Newman, , J. E. Nielsen, , S. M. Frith, , and M. L. Gupta, 2008: Goddard Earth Observing System chemistry-climate model simulations of stratospheric ozone-temperature coupling between 1950 and 2005. J. Geophys. Res., 113, D12103, doi:10.1029/2007JD009511.

    • Search Google Scholar
    • Export Citation
  • Perlwitz, J., , and N. Harnik, 2003: Observational evidence of a stratospheric influence on the troposphere by planetary wave reflection. J. Climate, 16, 30113026.

    • Search Google Scholar
    • Export Citation
  • Perlwitz, J., , and N. Harnik, 2004: Downward coupling between the stratosphere and troposphere: The relative roles of wave and zonal mean processes. J. Climate, 17, 49024909.

    • Search Google Scholar
    • Export Citation
  • Perlwitz, J., , S. Pawson, , R. L. Fogt, , J. E. Nielsen, , and W. D. Neff, 2008: Impact of stratospheric ozone hole recovery on Antarctic climate. Geophys. Res. Lett., 35, L08714, doi:10.1029/2008GL033317.

    • Search Google Scholar
    • Export Citation
  • Polvani, L. M., , D. W. Waugh, , G. Correa, , and S.-W. Son, 2011: Stratospheric ozone depletion: The main driver of twentieth-century atmospheric circulation changes in the Southern Hemisphere. J. Climate, 24, 795812.

    • Search Google Scholar
    • Export Citation
  • Randel, W. J., 1987: A study of planetary waves in the southern winter troposphere and stratosphere. Part I: Wave structure and vertical propagation. J. Atmos. Sci., 44, 917935.

    • Search Google Scholar
    • Export Citation
  • Rayner, N. A., , D. E. Parker, , E. B. Horton, , C. K. Folland, , L. V. Alexander, , D. P. Rowell, , E. C. Kent, , and A. Kaplan, 2003: Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century. J. Geophys. Res., 108, 4407, doi:10.1029/2002JD002670.

    • Search Google Scholar
    • Export Citation
  • Rienecker, M. M., and Coauthors, 2011: MERRA: NASA's Modern-Era Retrospective Analysis for Research and Applications. J. Climate, 24, 36243648.

    • Search Google Scholar
    • Export Citation
  • Schubert, S., and Coauthors, 2008: Assimilating earth system observations at NASA: MERRA and beyond. Third WCRP Int. Conf. on Reanalysis, Tokyo, Japan, WCRP, 6 pp. [Available online at http://wcrp.ipsl.jussieu.fr/Workshops/Reanalysis2008/Documents/V1-104_ea.pdf.]

    • Search Google Scholar
    • Export Citation
  • Shaw, T. A., , J. Perlwitz, , and N. Harnik, 2010: Downward wave coupling between the stratosphere and troposphere: The importance of meridional wave guiding and comparison with zonal-mean coupling. J. Climate, 23, 63656381.

    • Search Google Scholar
    • Export Citation
  • Son, S.-W., and Coauthors, 2010: Impact of stratospheric ozone on Southern Hemisphere circulation change: A multimodel assessment. J. Geophys. Res., 115, D00M07, doi:10.1029/2010JD014271.

    • Search Google Scholar
    • Export Citation
  • Stolarski, R. S., , A. R. Douglass, , M. Gupta, , P. A. Newman, , S. Pawson, , M. R. Schoeberl, , and J. E. Nielsen, 2006: An ozone increase in the Antarctic summer stratosphere: A dynamical response to the ozone hole. Geophys. Res. Lett., 33, L21805, doi:10.1029/2006GL026820.

    • Search Google Scholar
    • Export Citation
  • Thompson, D. W. J., , and S. Solomon, 2002: Interpretation of recent Southern Hemisphere climate change. Science, 296, 895899.

  • Waugh, D. W., , and V. Eyring, 2008: Quantitative performance metrics for stratospheric-resolving chemistry-climate models. Atmos. Chem. Phys., 8, 56995731.

    • Search Google Scholar
    • Export Citation
  • Waugh, D. W., , W. J. Randel, , S. Pawson, , P. A. Newman, , and E. R. Nash, 1999: Persistence of the lower stratospheric polar vortices. J. Geophys. Res., 104, 27 19127 201.

    • Search Google Scholar
    • Export Citation
  • Waugh, D. W., , L. Oman, , S. R. Kawa, , R. S. Stolarski, , S. Pawson, , A. R. Douglass, , P. A. Newman, , and J. E. Nielsen, 2009: Impacts of climate change on stratospheric ozone recovery. Geophys. Res. Lett., 36, L03805, doi:10.1029/2008GL036223.

    • Search Google Scholar
    • Export Citation
  • World Meteorological Organization, 2003: Scientific assessment of ozone depletion: 2002. Global Ozone Research and Monitoring Project, Rep. 47, Geneva, 498 pp.

    • Search Google Scholar
    • Export Citation
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The Impact of Stratospheric Ozone Changes on Downward Wave Coupling in the Southern Hemisphere

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  • 1 Lamont-Doherty Earth Observatory and Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York
  • | 2 Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado
  • | 3 Department of Geophysics and Planetary Sciences, Tel Aviv University, Tel Aviv, Israel
  • | 4 NASA Goddard Space Flight Center, Greenbelt, Maryland
  • | 5 Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, Maryland
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Abstract

The impact of stratospheric ozone changes on downward wave coupling between the stratosphere and troposphere in the Southern Hemisphere is investigated using a suite of Goddard Earth Observing System chemistry–climate model (GEOS CCM) simulations. Downward wave coupling occurs when planetary waves reflected in the stratosphere impact the troposphere. In reanalysis data, the climatological coupling occurs from September to December when the stratospheric basic state has a well-defined high-latitude meridional waveguide in the lower stratosphere that is bounded above by a reflecting surface, called a bounded wave geometry. Reanalysis data suggests that downward wave coupling during November–December has increased during the last three decades.

The GEOS CCM simulation of the recent past captures the main features of downward wave coupling in the Southern Hemisphere. Consistent with the Modern Era Retrospective-Analysis for Research and Application (MERRA) dataset, wave coupling in the model maximizes during October–November when there is a bounded wave geometry configuration. However, the wave coupling in the model is stronger than in the MERRA dataset, and starts earlier and ends later in the seasonal cycle. The late season bias is caused by a bias in the timing of the stratospheric polar vortex breakup.

Temporal changes in stratospheric ozone associated with past depletion and future recovery significantly impact downward wave coupling in the model. During the period of ozone depletion, the spring bounded wave geometry, which is favorable for downward wave coupling, extends into early summer, due to a delay in the vortex breakup date, and leads to increased downward wave coupling during November–December. During the period of ozone recovery, the stratospheric basic state during November–December shifts from a spring configuration back to a summer configuration, where waves are trapped in the troposphere, and leads to a decrease in downward wave coupling. Model simulations with chlorine fixed at 1960 values and increasing greenhouse gases show no significant changes in downward wave coupling and confirm that the changes in downward wave coupling in the model are caused by ozone changes. The results reveal a new mechanism wherein stratospheric ozone changes can affect the tropospheric circulation.

Lamont-Doherty Earth Observatory Contribution Number 7476.

Additional affiliation: NOAA/Earth System Research Laboratory, Physical Sciences Division, Boulder, Colorado.

Corresponding author address: Dr. Tiffany A. Shaw, Lamont-Doherty Earth Observatory and Department of Applied Physics and Applied Mathematics, Columbia University, P.O. Box 1000, 61 Route 9W, Palisades, NY 10964. E-mail: tas2163@columbia.edu

This article is included in the Modern Era Retrospective-Analysis for Research and Applications (MERRA) special collection.

Abstract

The impact of stratospheric ozone changes on downward wave coupling between the stratosphere and troposphere in the Southern Hemisphere is investigated using a suite of Goddard Earth Observing System chemistry–climate model (GEOS CCM) simulations. Downward wave coupling occurs when planetary waves reflected in the stratosphere impact the troposphere. In reanalysis data, the climatological coupling occurs from September to December when the stratospheric basic state has a well-defined high-latitude meridional waveguide in the lower stratosphere that is bounded above by a reflecting surface, called a bounded wave geometry. Reanalysis data suggests that downward wave coupling during November–December has increased during the last three decades.

The GEOS CCM simulation of the recent past captures the main features of downward wave coupling in the Southern Hemisphere. Consistent with the Modern Era Retrospective-Analysis for Research and Application (MERRA) dataset, wave coupling in the model maximizes during October–November when there is a bounded wave geometry configuration. However, the wave coupling in the model is stronger than in the MERRA dataset, and starts earlier and ends later in the seasonal cycle. The late season bias is caused by a bias in the timing of the stratospheric polar vortex breakup.

Temporal changes in stratospheric ozone associated with past depletion and future recovery significantly impact downward wave coupling in the model. During the period of ozone depletion, the spring bounded wave geometry, which is favorable for downward wave coupling, extends into early summer, due to a delay in the vortex breakup date, and leads to increased downward wave coupling during November–December. During the period of ozone recovery, the stratospheric basic state during November–December shifts from a spring configuration back to a summer configuration, where waves are trapped in the troposphere, and leads to a decrease in downward wave coupling. Model simulations with chlorine fixed at 1960 values and increasing greenhouse gases show no significant changes in downward wave coupling and confirm that the changes in downward wave coupling in the model are caused by ozone changes. The results reveal a new mechanism wherein stratospheric ozone changes can affect the tropospheric circulation.

Lamont-Doherty Earth Observatory Contribution Number 7476.

Additional affiliation: NOAA/Earth System Research Laboratory, Physical Sciences Division, Boulder, Colorado.

Corresponding author address: Dr. Tiffany A. Shaw, Lamont-Doherty Earth Observatory and Department of Applied Physics and Applied Mathematics, Columbia University, P.O. Box 1000, 61 Route 9W, Palisades, NY 10964. E-mail: tas2163@columbia.edu

This article is included in the Modern Era Retrospective-Analysis for Research and Applications (MERRA) special collection.

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