Abstract: Perpetual January data from a simple global two-level model are used to diagnose the forcing of the model's low-frequency (LF), large-scale flow. The forcing is considered within the context of a hypothetical low-order ...

Abstract: A low-resolution global spectral model truncated at zonal wavenumber 5 and meridional mode 15 is developed to simulate the low-frequency variability of planetary-scale atmospheric motions. The effects of unresolved time ...

Abstract: The nonlinear development of baroclinically unstable waves in the presence of surface friction and heat flux is studied, using a global primitive equation model. The experiments use zonal wavenumber 3.7 or 12 and a variety ...

Abstract: This paper describes the use of a regional-scale air quality model as a diagnostic tool for analyzing problems associated with acid rain. The model, which is hybrid in nature, consists of a puff module and a grid module. ...

Abstract: We use a global, primitive equation model to study the evolution of waves growing in a zonal mean state that is initially baroclinically unstable. The waves produce changes in the zonal mean state that we compare with ...

Abstract: The interaction between moisture and baroclinic eddies was examined through eddy life-cycle experiments using a global, primitive equation model. How condensation affects the structural evolution of eddies, their fluxes ...

Abstract: Observational studies have revealed some coherent extratropical patterns associated with the tropical Madden?Julian (MJ) wave. This study is an attempt to clarify and constrain the interpretation of these patterns by ...