Downscaling extreme month-long anomalies in southern South America Menendez C. G. auteur aut IRD de Castro M. auteur aut IRD Boulanger Jean-Philippe auteur aut IRD D'Onofrio A. auteur aut IRD Sanchez E. auteur aut IRD Sorensson A. A. auteur aut IRD Blazquez J. auteur aut IRD Elizalde A. auteur aut IRD Jacob D. auteur aut IRD Le Treut H. auteur aut IRD Li Z. X. auteur aut IRD Nunez M. N. auteur aut IRD Pessacg N. auteur aut IRD Pfeiffer S. auteur aut IRD Rojas M. auteur aut IRD Rolla A. auteur aut IRD Samuelsson P. auteur aut IRD Solman S. A. auteur aut IRD Teichmann C. auteur aut IRD text journalArticle eng text/pdf born digital access We investigate the performance of one stretched-grid atmospheric global model, five different regional climate models and a statistical downscaling technique in simulating 3 months (January 1971, November 1986, July 1996) characterized by anomalous climate conditions in the southern La Plata Basin. Models were driven by reanalysis (ERA-40). The analysis has emphasized on the simulation of the precipitation over land and has provided a quantification of the biases of and scatter between the different regional simulations. Most but not all dynamical models underpredict precipitation amounts in south eastern South America during the three periods. Results suggest that models have regime dependence, performing better for some conditions than others. The models' ensemble and the statistical technique succeed in reproducing the overall observed frequency of daily precipitation for all periods. But most models tend to underestimate the frequency of dry days and overestimate the amount of light rainfall days. The number of events with strong or heavy precipitation tends to be under simulated by the models. specialized 021 Climatic Change 98 3-4 379-403 2010 0165-0009 https://www.documentation.ird.fr/hor/fdi:010049341 10.1007/s10584-009-9739-3 0165-0009 [F B010049341] https://www.documentation.ird.fr/hor/fdi:010049341 https://www.documentation.ird.fr/intranet/publi/2010/03/010049341.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2010-04-06 2017-08-23 fdi:010049341 fre