• Bals-Elsholz, T. M., E. H. Atallah, L. F. Bosart, T. A. Wasula, M. J. Cempa, and A. R. Lupo, 2001: The wintertime Southern Hemisphere split jet: Structure, variability, and evolution. J. Climate, 14 , 41914215.

    • Search Google Scholar
    • Export Citation
  • Bentley, C. R., 1993: Antarctic mass balance and sea level change. Eos, Trans. Amer. Geophys. Union, 74 , 585586.

  • Bromwich, D. H., J. F. Carrasco, Z. Liu, and R-Y. Tzeng, 1993: Hemispheric atmospheric variations and oceanographic impacts associated with katabatic surges across the Ross Ice Shelf, Antarctica. J. Geophys. Res., 98 , 1304513062.

    • Search Google Scholar
    • Export Citation
  • Bromwich, D. H., F. M. Robasky, R. I. Cullather, and M. L. Van Woert, 1995: The atmospheric hydrologic cycle over the Southern Ocean and Antarctica from operational numerical analyses. Mon. Wea. Rev., 123 , 35183538.

    • Search Google Scholar
    • Export Citation
  • Bromwich, D. H., A. N. Rogers, P. Kållberg, R. I. Cullather, J. W. C. White, and K. J. Kreutz, 2000: ECMWF analyses and reanalyses depiction of ENSO signal in Antarctic precipitation. J. Climate, 13 , 14061420.

    • Search Google Scholar
    • Export Citation
  • Bromwich, D. H., Q-S. Chen, L-S. Bai, E. N. Cassano, and Y-F. Li, 2001: Modeled precipitation variability over the Greenland Ice Sheet. J. Geophys. Res., 106 , 3389133908.

    • Search Google Scholar
    • Export Citation
  • Bromwich, D. H., Z-C. Guo, L. Bai, and Q-S. Chen, 2004a: Modeled Antarctic precipitation. Part I: Spatial and temporal variability. J. Climate, 17 , 427447.

    • Search Google Scholar
    • Export Citation
  • Bromwich, D. H., A. J. Monaghan, and Z-C. Guo, 2004b: Modeling the ENSO modulation of Antarctic climate in the late 1990s with the Polar MM5. J. Climate, 17 , 109132.

    • Search Google Scholar
    • Export Citation
  • Carleton, A. M., 1988: Sea ice–atmosphere signal of the Southern Oscillation in the Weddell Sea, Antarctica. J. Climate, 1 , 379388.

    • Search Google Scholar
    • Export Citation
  • Chen, B., S. R. Smith, and D. H. Bromwich, 1996: Evolution of the tropospheric split jet over the South Pacific Ocean during the 1986–89 ENSO cycle. Mon. Wea. Rev., 124 , 17111731.

    • Search Google Scholar
    • Export Citation
  • Chen, Q-S., D. H. Bromwich, and L. Bai, 1997: Precipitation over Greenland retrieved by a dynamic method and its relation to cyclonic activity. J. Climate, 10 , 839870.

    • Search Google Scholar
    • Export Citation
  • Cullather, R. I., D. H. Bromwich, and M. L. Van Woert, 1996: Interannual variability in Antarctic precipitation related to El Niño–Southern Oscillation. J. Geophys. Res., 101 , 1910919118.

    • Search Google Scholar
    • Export Citation
  • Cullather, R. I., D. H. Bromwich, and R. W. Grumbine, 1997: Validation of operational numerical analyses in Antarctic latitudes. J. Geophys. Res., 102 , 1376113784.

    • Search Google Scholar
    • Export Citation
  • Genthon, C., 2002: Climate and surface mass balance of the polar ice sheets in ERA40/ERA15. ERA-40 Project Report Series, Vol. 3, European Centre for Medium-Range Weather Forecasts, 299–316. [Available online at http://www.ecmwf.int/publications/library/ecpublications/proceedings/ERA40-reanalysis_workshop/genthon.pdf.].

    • Search Google Scholar
    • Export Citation
  • Genthon, C., and G. Krinner, 1998: Convergence and disposal of energy and moisture on the Antarctic polar cap from ECMWF reanalyses and forecasts. J. Climate, 11 , 17031716.

    • Search Google Scholar
    • Export Citation
  • Gloersen, P., 1995: Modulation of hemispheric sea-ice cover by ENSO events. Nature, 373 , 503506.

  • Guo, Z., 2003: Spatial and temporal variability of modern Antarctic precipitation. Ph.D. dissertation, The Ohio State University, 150 pp.

    • Search Google Scholar
    • Export Citation
  • Guo, Z., D. H. Bromwich, and J. J. Cassano, 2003: Evaluation of Polar MM5 simulations of Antarctic atmospheric circulation. Mon. Wea. Rev., 131 , 384411.

    • Search Google Scholar
    • Export Citation
  • Hansen, J., J. Ruedy, J. Glascoe, and M. Sato, 1999: GISS analysis of surface temperature change. J. Geophys. Res., 104 , 3099731022.

  • Hines, K. M., and D. H. Bromwich, 2002: A pole to pole West Pacific atmospheric teleconnection during August. J. Geophys. Res.,107, 4359, doi:10.1029/2001JD001335.

    • Search Google Scholar
    • Export Citation
  • Hines, K. M., D. H. Bromwich, and G. J. Marshall, 2000: Artificial surface pressure trends in the NCEP/NCAR reanalysis over the Southern Ocean and Antarctica. J. Climate, 13 , 39403952.

    • Search Google Scholar
    • Export Citation
  • Huffman, G. J., and Coauthors, 1997: The Global Precipitation Climatology Project (GPCP) combined data set. Bull. Amer. Meteor. Soc., 78 , 520.

    • Search Google Scholar
    • Export Citation
  • Kalnay, E., and Coauthors, 1996: The NCEP/NCAR 40-Year Reanalysis Project. Bull. Amer. Meteor. Soc., 77 , 437471.

  • Kanamitsu, M., W. Ebisuzaki, J. Woollen, S-K. Yang, J. J. Hnilo, M. Fiorino, and G. L. Potter, 2002: NCEP–DOE AMIP-II Reanalysis (R-2). Bull. Amer. Meteor. Soc., 83 , 16311643.

    • Search Google Scholar
    • Export Citation
  • Karoly, D. J., 1989: Southern Hemisphere circulation features associated with El Niño–Southern Oscillation events. J. Climate, 2 , 12391252.

    • Search Google Scholar
    • Export Citation
  • King, J. C., 1994: Recent climate variability in the vicinity of the Antarctic Peninsula. Int. J. Climatol., 14 , 357369.

  • Kistler, R., and Coauthors, 2001: The NCEP–NCAR 50-Year Reanalysis: Monthly means CD-ROM and documentation. Bull. Amer. Meteor. Soc., 82 , 247267.

    • Search Google Scholar
    • Export Citation
  • Kreutz, K. J., P. A. Mayewski, I. I. Pittalwala, L. D. Meeker, M. S. Twickler, and S. I. Whitlow, 2000: Sea level pressure variability in the Amundsen Sea region inferred from a West Antarctic glaciochemical record. J. Geophys. Res., 105 , 40474059.

    • Search Google Scholar
    • Export Citation
  • Kwok, R., and J. C. Comiso, 2002: Southern Ocean climate and sea ice anomalies associated with the Southern Oscillation. J. Climate, 15 , 487501.

    • Search Google Scholar
    • Export Citation
  • Lettau, B., 1969: The transport of moisture into the Antarctic interior. Tellus, 21 , 331340.

  • Liu, H., K. C. Jezek, and B. Li, 1999: Development of an Antarctic digital elevation model by integrating cartographic and remotely sensed data: A geographic information system based approach. J. Geophys. Res., 104 , 2319923213.

    • Search Google Scholar
    • Export Citation
  • Marshall, G. J., 2002: Trends in Antarctic geopotential height and temperature: A comparison between radiosonde and NCEP–NCAR reanalysis data. J. Climate, 15 , 39403952.

    • Search Google Scholar
    • Export Citation
  • Marshall, G. J., and S. A. Harangozo, 2000: An appraisal of NCEP/NCAR reanalysis MSLP data viability for climate studies in the South Pacific. Geophys. Res. Lett., 27 , 30573060.

    • Search Google Scholar
    • Export Citation
  • Parish, T. R., and D. H. Bromwich, 1998: A case study of Antarctic katabatic wind interaction with large-scale forcing. Mon. Wea. Rev., 126 , 199209.

    • Search Google Scholar
    • Export Citation
  • Rott, H., W. Rack, T. Nagler, and P. Skvarca, 1998: Climatically induced retreat and collapse of northern Larsen Ice Shelf, Antarctic Peninsula. Ann. Glaciol., 27 , 8692.

    • Search Google Scholar
    • Export Citation
  • Scambos, T. A., C. Hulbe, M. Fahnestock, and J. Bohlander, 2000: The link between climate warming and break-up of ice shelves in the Antarctic Peninsula. J. Glaciol., 46 , 516530.

    • Search Google Scholar
    • Export Citation
  • Simmonds, I., and T. H. Jacka, 1995: Relationships between the interannual variability of Antarctic sea ice and the Southern Oscillation. J. Climate, 8 , 637647.

    • Search Google Scholar
    • Export Citation
  • Smith, R. C., S. E. Stammerjohn, and K. E. Baker, 1996: Surface air temperature variations in the western Antarctic Peninsula region. Foundations for Ecological Research West of the Antarctic Peninsula, R. M. Ross, E. E. Hofmann, and L. B. Quetin, Eds., Antarctic Research Series, Vol. 70, Amer. Geophys. Union, 105–121.

    • Search Google Scholar
    • Export Citation
  • Smith, S. R., and C. R. Stearns, 1993: Antarctic pressure and temperature anomalies surrounding the minimum in the Southern Oscillation index. J. Geophys. Res., 98 , 1307113083.

    • Search Google Scholar
    • Export Citation
  • Trenberth, K. E., and J. M. Caron, 2000: The Southern Oscillation revisited: Sea level pressure, surface temperatures, and precipitation. J. Climate, 13 , 43584365.

    • Search Google Scholar
    • Export Citation
  • Xie, P. P., and P. A. Arkin, 1998: Global monthly precipitation estimates from satellite-observed outgoing longwave radiation. J. Climate, 11 , 137164.

    • Search Google Scholar
    • Export Citation
  • Yuan, X., and D. G. Martinson, 2000: Antarctic sea ice extent variability and its global connectivity. J. Climate, 13 , 16971717.

  • Yuan, X., and D. G. Martinson, 2001: The Antarctic dipole and its predictability. Geophys. Res. Lett., 28 , 36093612.

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Modeled Antarctic Precipitation. Part II: ENSO Modulation over West Antarctica

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  • 1 Polar Meteorology Group, Byrd Polar Research Center, and Atmospheric Sciences Program, Department of Geography, The Ohio State University, Columbus, Ohio
  • | 2 Polar Meteorology Group, Byrd Polar Research Center, The Ohio State University, Columbus, Ohio
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Abstract

The impacts of the El Niño–Southern Oscillation (ENSO) on the Antarctic region are of special importance in evaluating the variability and change of the climate system in high southern latitudes. In this study, the ENSO signal in modeled precipitation over West Antarctica since 1979 is evaluated using forecast precipitation from several meteorological analyses and reanalyses. Additionally, a dynamical retrieval method (DRM) for precipitation is applied. Over the last two decades, the Southern Oscillation index (SOI) has an overall anticorrelation with precipitation over the West Antarctic sector bounded by 75°–90°S, 120°W–180° while it is positively correlated with precipitation over the South Atlantic sector bounded by 65°–75°S, 30°–60°W.

Decadal variations are found as the relationship between the SOI and West Antarctic precipitation is stronger in the 1990s than that in the 1980s. The polar front jet stream, West Antarctic precipitation, and the SOI show a well-ordered correspondence during the 1990s as the jet zonal speed is negatively correlated to the SOI and positively correlated to West Antarctic precipitation. These relationships are weaker during the 1980s, consistent with the change in sign of the correlation between the SOI and West Antarctic precipitation. The decadal variations are apparently related to changes in the quasi-stationary eddies that determine the local onshore and offshore flow over West Antarctica.

Current affiliation: Center for Ocean–Land–Atmosphere Studies, Calverton, Maryland

Corresponding author address: David H. Bromwich, Polar Meteorology Group, Byrd Polar Research Center, The Ohio State University, 1090 Carmack Rd., Columbus, OH 43210-1002. Email: bromwich@polarmet1.mps.ohio-state.edu

Abstract

The impacts of the El Niño–Southern Oscillation (ENSO) on the Antarctic region are of special importance in evaluating the variability and change of the climate system in high southern latitudes. In this study, the ENSO signal in modeled precipitation over West Antarctica since 1979 is evaluated using forecast precipitation from several meteorological analyses and reanalyses. Additionally, a dynamical retrieval method (DRM) for precipitation is applied. Over the last two decades, the Southern Oscillation index (SOI) has an overall anticorrelation with precipitation over the West Antarctic sector bounded by 75°–90°S, 120°W–180° while it is positively correlated with precipitation over the South Atlantic sector bounded by 65°–75°S, 30°–60°W.

Decadal variations are found as the relationship between the SOI and West Antarctic precipitation is stronger in the 1990s than that in the 1980s. The polar front jet stream, West Antarctic precipitation, and the SOI show a well-ordered correspondence during the 1990s as the jet zonal speed is negatively correlated to the SOI and positively correlated to West Antarctic precipitation. These relationships are weaker during the 1980s, consistent with the change in sign of the correlation between the SOI and West Antarctic precipitation. The decadal variations are apparently related to changes in the quasi-stationary eddies that determine the local onshore and offshore flow over West Antarctica.

Current affiliation: Center for Ocean–Land–Atmosphere Studies, Calverton, Maryland

Corresponding author address: David H. Bromwich, Polar Meteorology Group, Byrd Polar Research Center, The Ohio State University, 1090 Carmack Rd., Columbus, OH 43210-1002. Email: bromwich@polarmet1.mps.ohio-state.edu

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