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The Pacific zonal asymmetry and its influence on Southern Hemisphere sea ice variability

Published online by Cambridge University Press:  01 July 2010

W.R. Hobbs  and
M.N. Raphael
W.R. Hobbs*
Affiliation:
Department of Geography, University of California Los Angeles, 1255 Bunche Hall, Los Angeles, CA 90095, USA
M.N. Raphael
Affiliation:
Department of Geography, University of California Los Angeles, 1255 Bunche Hall, Los Angeles, CA 90095, USA
*
[email protected]
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Abstract

At monthly and annual timescales, the zonally asymmetric circulation over the Southern Ocean is dominated by two quasi-stationary anticyclones: a western anticyclone approximately located south of New Zealand, and an eastern anticyclone located over the Drake Passage region. In this research their influence on late 20th century Antarctic sea ice is explored. During early winter, sea ice in the Weddell, Amundsen and Bellingshausen seas is influenced by the location of the east anticyclone. During late winter, the strength and location of the west anticyclone influences sea ice primarily in the Ross and Amundsen seas. The anticyclones have some effect on wind-driven sea ice motion, but the primary mechanism explaining their link to sea ice appears to be meridional atmospheric thermal advection. A western shift in the west anticyclone may be partly responsible for observed increases in ice cover in the Ross Sea over the late 20th century, but there is little evidence in existing data to support a link between the east anticyclone and observed sea ice trends.

Keywords

Antarcticaocean-atmosphere interactionpolar changesea icezonal waves
Type
Physical Sciences
Information
Antarctic Science , Volume 22 , Issue 5 , October 2010 , pp. 559 - 571
Copyright
Copyright © Antarctic Science Ltd 2010

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References

Bromwich, D.H., Fogt, R.L., Hodges, K.L.Walsh, J.E. 2007. A tropospheric assessment of the ERA-40, NCEP and JRA-25 global reanalyses in the polar regions. Journal of Geophysical Research, 112, 10.1029/2006JD007859.CrossRefGoogle Scholar
Carleton, A.M. 1989. Antarctic sea-ice relationships with indices of the atmospheric circulation of the Southern Hemisphere. Climate Dynamics, 3, 207–220.CrossRefGoogle Scholar
Collins, W.D., Bitz, C.M., Blackmon, M.L., Bonan, G.B., Bretherton, C.S., Carton, J.A., Chang, P., Doney, S.C., Hack, J.J., Henderson, T.B., Kiehl, J.T., Large, W.G., McKenna, D.S., Santer, B.D.Smith, R.D. 2006. The Community Climate System Model version 3 (CCSM3). Journal of Climate, 19, 2122–2143.CrossRefGoogle Scholar
Fowler, C. 2003. updated 2007. Polar Pathfinder daily 25 km EASE-grid sea ice motion vectors, 1979–2006. Boulder, CO: National Snow and Ice Data Centre, digital media.Google Scholar
Hall, A.Visbeck, M. 2002. Synchronous variability in the Southern Hemisphere atmosphere. Journal of Climate, 15, 3043–3057.2.0.CO;2>CrossRefGoogle Scholar
Hobbs, W.R.Raphael, M.N. 2007. A representative time-series for the Southern Hemisphere zonal wave one. Geophysical Research Letters, 34, 10.1029/2006GL028740.CrossRefGoogle Scholar
Hobbs, W.R.Raphael, M.N. 2009. Characterizing the zonally asymmetric component of the SH circulation. Climate Dynamics, 10.1007/s00382-009-0663-z.Google Scholar
Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., Zhu, Y., Leetmaa, A.Reynolds, R. 1996. The NCEP/NCAR 40-year reanalysis project. Bulletin of the American Meteorological Society, 77, 437–471.2.0.CO;2>CrossRefGoogle Scholar
Lachlan-Cope, T. 2005. Role of sea ice in forcing the winter climate of Antarctica in a global climate model. Journal of Geophysical Research, 110, 10.1029/2004JD004935.CrossRefGoogle Scholar
Lefebvre, W.Goosse, H. 2008. An analysis of the atmospheric processes driving the large-scale winter sea ice variability in the Southern Ocean. Journal of Geophysical Research, 113, 10.1029/2006JC004032.CrossRefGoogle Scholar
Lefebvre, W., Goosse, H., Timmerman, R.Fichefet, T. 2004. Influence of the Southern Annular Mode on the sea ice-ocean system. Journal of Geophysical Research, 109, 10.1029/2004JC002403.CrossRefGoogle Scholar
Liu, J., Curry, J.A.Martinson, G.M. 2004. Interpretation of recent Antarctic sea ice variability. Geophysical Research Letters, 31, 10.1029/2003GL018732.Google Scholar
Ludicone, D., Madec, G., Blanke, B.Speich, S. 2008. The role of Southern Ocean surface forcings and mixing in the global conveyor. Journal of Physical Oceanography, 38, 1377–1400.CrossRefGoogle Scholar
Marshall, G.J. 2002. Trends in Antarctic geopotential height and temperature: a comparison between radiosonde and NCEP-NCAR reanalysis data. Journal of Climate, 15, 659–674.2.0.CO;2>CrossRefGoogle Scholar
Marshall, G.J. 2003. Trends in the Southern Annular Mode from observations and reanalyses. Journal of Climate, 16, 4134–4143.2.0.CO;2>CrossRefGoogle Scholar
Massom, R.A., Stammerjohn, S.E., Lefebvre, W., Harangozo, S.A., Adams, N., Scambos, T.A., Pook, M.J.Fowler, C. 2008. West Antarctic Peninsula sea ice in 2005: extreme ice compaction and ice edge retreat due to strong anomaly with respect to climate. Journal of Geophysical Research, 113, 10.1029/2007JC004239.CrossRefGoogle Scholar
Mikolajewicz, U. 1998. Effect of meltwater input from the Antarctic ice sheet on the thermohaline circulation. Annals of Glaciology, 27, 311–315.CrossRefGoogle Scholar
Mo, K.C.Ghil, J. 1987. Statistics and dynamics of persistent anomalies. Journal of Atmospheric Sciences, 44, 877–902.2.0.CO;2>CrossRefGoogle Scholar
Raphael, M.N. 2007. The influence of atmospheric zonal wave three on Antarctic sea ice variability. Journal of Geophysical Research, 112, 10.1029/2006JD007852.CrossRefGoogle Scholar
Rayner, N.A., Parker, D.E., Horton, E.B., Folland, C.K., Alexander, L.V., Rowell, D.P., Kent, E.C.Kaplan, A. 2003. Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century. Journal of Geophysical Research, 118, 10.1029/2002JD002670.Google Scholar
Renwick, J.A. 2002. Southern Hemisphere circulation and relations with sea ice and sea surface temperature. Journal of Climate, 15, 3058–3068.2.0.CO;2>CrossRefGoogle Scholar
Simmonds, I. 1981. The effect of sea-ice on a general circulation model of the Southern Hemisphere. In Allison, I., ed. Sea level, ice and climatic change. IAHS Publication, No.131, 193–206.Google Scholar
Simmonds, I.Wu, X. 1993. Cyclone behaviour response to changes in the winter Southern Hemisphere sea-ice concentration. Quarterly Journal of the Royal Meteorological Society, 119, 1121–1148.Google Scholar
Stammerjohn, S.E., Martinson, D.G., Smith, R.C., Yuan, X.Rind, D. 2008. Trends in Antarctic annual sea ice retreat and advance and their relation to El Niño-Southern Oscillation and Southern Annular Mode variability. Journal of Geophysical Research, 113, 10.1029/2007JC004269.CrossRefGoogle Scholar
Steig, E.J., Schneider, D.P., Rutherford, S.D., Mann, M.E., Comesino, J.C.Shindell, D.T. 2009. Warming of the Antarctic ice-sheet surface since the 1957 International Geophysical Year. Nature, 457, 459–463.CrossRefGoogle ScholarPubMed
Stossel, A., Yang, K.Kim, S.J. 2002. On the role of sea ice and convection in a global ocean mode. Journal of Physical Oceanography, 32, 1194–1208.2.0.CO;2>CrossRefGoogle Scholar
Trenberth, K.E. 1980. Planetary waves at 500hPa in the Southern Hemisphere. Monthly Weather Review, 108, 1378–1389.2.0.CO;2>CrossRefGoogle Scholar
Uppala, S.M., Kållberg, P.W., Simmons, A.J., Andrae, U., Da Costa-Bechtold, V., Fiorino, M., Gibson, J.K., Haseler, J., Hernandez, A., Kelly, G.A., Li, X., Onogi, K., Saarinen, S., Sokka, N., Allan, R.P., Andersson, E., Arpe, K., Balmaseda, M.A., Beljaars, A.C.M., van de Berg, L., Bidlot, J., Bormann, N., Caires, S., Chevallier, F., Dethof, A., Dragosavac, M., Fisher, M., Fuentes, M., Hagemann, S., Hólm, E., Hoskins, B.J., Isaksen, L., Janssen, P.A.E.M., Jenne, R., McNally, A.P., Mahfouf, J.-F., Morcrette, J.-J., Rayner, N.A., Saunders, R.W., Simon, P., Sterl, A., Trenberth, K.E., Untch, A., Vasiljevic, D., Viterbo, P.Woollen, J. 2005. The ERA-40 reanalysis. Quarterly Journal of the Royal Meteorological Society, 131, 2961–3012.CrossRefGoogle Scholar
Van Loon, H.Jenne, R.L. 1972. The zonal harmonic standing waves in the Southern Hemisphere. Journal of Geophysical Research, 77, 992–1003.CrossRefGoogle Scholar
Wu, X.G., Budd, W.F.Allison, I. 2003. Modelling the impacts of persistent Antarctic polynyas with an atmosphere-sea-ice general circulation model. Deep-Sea Research II, 50, 1357–1372.CrossRefGoogle Scholar
Yuan, X.J. 2004. ENSO-related impacts on Antarctic sea ice: a synthesis of phenomenon and mechanisms. Antarctic Science, 16, 415–425.CrossRefGoogle Scholar
Yuan, X.J.Li, C. 2008. Climate modes in southern high latitudes and their impacts on Antarctic sea ice. Journal of Geophysical Research, 113, 10.1029/2006JC004067.CrossRefGoogle Scholar
Yuan, X.J.Martinson, D.G. 2000. Antarctic sea ice extent variability and its global connectivity. Journal of Climate, 13, 1697–1713.2.0.CO;2>CrossRefGoogle Scholar
Yuan, X.J.Martinson, D.G. 2001. The Antarctic Dipole and its predictability. Geophysical Research Letters, 28, 3609–3612.CrossRefGoogle Scholar