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PCMDI > WCRP CMIP3 Model Output > Diagnostic Subprojects Printer Friendly Version
 
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Impact of the leading modes of low-frequency atmospheric variability in the Southern Hemisphere on South America climate

PI: Carolina Vera
Institution: Universidad de Buenos Aires
Additional Investigators: G. Silvestri
Abstract:
Objective: To test the model simulation ability in reproducing:
i) the spatial structure and temporal variability of the leading modes of low-frequency variability of the circulation in the SH, and,
ii) the relative contributions of the leading modes to the explained variance of regional circulation, and precipitation in South America.

Simulations: Pre-industrial control, 20C3M, SRES A2, SRES A1B

Model Data required:
- Global monthly means at 850, 500, and 200 hPa of the following variables: geopotential height (zg850, zg500, zg200), eastward wind (ua850, ua500, ua250), northward wind (va850, va500, va250) and specific humidity (hu850, hus500, hus250).
- Global monthly means of sea surface temperature, precipitation flux, and sea level pressure: ts, pr and psl.
Publications:
  • Silvestri, G., and C. Vera, 2008: Evaluation of the WCRP-CMIP3 model simulations in the La Plata basin. METEOROLOGICAL APPLICATIONS, 15, 497-502, DOI: 10.1002/met.98. Abstract. Full Article. Edit.
  • Vera, C., and G. Silvestri, 2009: Precipitation interannual variability in South America from the WCRP-CMIP3 multi-model dataset. Climate Dynamics, DOI 10.1007/s00382-009-0534-7. In press. Abstract. Full Article. Edit.
  • Vera, C., G. Silvestri, B. Liebmann, P. Gonzalez, 2006: Climate change scenarios for seasonal precipitation in South America. Geophys. Res. Lett., 33, doi:10.1029/2006GL025759. Abstract. Full Article. Edit.
  • Vera, C., P. Gonzalez, G. Silvestri, 2009: About uncertainties in WCRP/CMIP3 climate simulations over South America. Proceedings of 9th AMS International Conference on Southern Hemisphere Meteorology and Oceanography, 9-14 February 2009, Melbourne, Australia.. Abstract. Full Article. Edit.
  • Vera, C.S.; Silvestri, G. E.; Liebmann, B.; Gonzalez, P., 2006: Precipitation variability in South America from IPCC-AR4 models. Part II: Influence of SH circulation leading patterns.. Proceedings of the 8th International Conference on Southern Hemisphere Meteorology and Oceanography, Foz do Iguaçu, Brazil, April 24-28, 2006., 477-486. Abstract. Edit.

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