Abstract: The seasonal transition from spring to summer in the Northern Hemisphere and from fall to winter in the Southern Hemisphere is studied for 1979 using gridded datasets produced by the Goddard Laboratory for Atmospheres. ...

Abstract: Frequency spectra of heights and geostrophic vorticities are computed for several points over the western continental United States and eastern Pacific. These spectra exhibit horizontal variations which appear to be, at ...

Abstract: The effect of tropical latent heat release in accelerations of the Southern Hemisphere subtropical jet is discussed based on a case study for 6?8 August 1979 and general circulation model simulations. This jet is a main ...

Abstract: The mechanics of the interaction between tropical beating [estimated from outgoing longwave radiation (OLR)] and Southern Hemisphere (SH) subtropical and extratropical circulations on intraseasonal time scales are discussed. ...

Abstract: The upper-level circulation of the Southern Hemisphere winter is characterized by two distinct zonal wind maxima: a subtropical jet found in the vicinity of Australia and the western Pacific Ocean, and a polar jet which ...

Abstract: Time series of outgoing longwave radiation (OLR) fields and various gridded reanalysis products are used to identify and describe periods with abundant and deficient rainfall over South America during summer. Empirical ...

Abstract: Global datasets produced by the Geophysical Fluid Dynamics Laboratory for the 1979 summer season are used to study the observed three-dimensional structure of the tropical 30?50 day oscillation. Decomposition of them data ...

Abstract: The physical mechanisms responsible for the onset and maintenance of the 1993 summer floods were examined using the localized Eliassen-Palm flux diagnostics and solutions of a single-level primitive equation model linearized ...

Abstract: The dynamical basis of intraseasonal oscillations of the Southern Hemisphere summer and winter seasons is studied with a combination of observed diagnostics and simplified prognostic models. High-frequency oscillations, ...

Abstract: A series of real-data integrations of the National Center for Atmospheric Research Community Climate Model with tropical heat anomalies display regions of pronounced subsidence and drying surrounding the anomaly. The present ...