Abstract: The authors hypothesize a simple feedback mechanism between external Rossby waves and diabatic heating from convection. This mechanism could explain the large amplitude that external Rossby waves attain as they propagate ...

Abstract: The mechanisms associated with the intraseasonal variability of precipitation over South America during the spring season are investigated with emphasis on the influence of a quasi-stationary anomalous circulation over the ...

Abstract: everal studies have documented the poleward shift of the midlatitude westerly jet of the Southern Hemisphere during the last decades of the twentieth century, mainly during the warm season. In this work the consistency ...

Abstract: n this study, a set of five reanalysis datasets [ERA-Interim, NCEP?DOE AMIP-II reanalysis (R2), MERRA, the Twentieth Century Reanalysis (20CR), and the CFS Reanalysis (CFSR)] is used to provide a robust estimation of ...

Abstract: The interannual variability associated with the ENSO of winter storm tracks over the region extending from the eastern South Pacific Ocean across South America to the South Atlantic Ocean is described using 39 yr of data ...