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A Nonlinear Spectral Model of Convection in a Fluid Unevenly Heated from Below
Publisher: American Meteorological Society
Abstract: A two-dimensional form of the Boussinesq equations is integrated numerically for the case of a rectangular channel with a temperature gradient maintained along the bottom. The side walls are insulating, the top wall has a ...
Tropical Influences on the Predictability of Ultralong Waves
Publisher: American Meteorological Society
Abstract: Some implications of predictability theory for ultralong waves are examined in an ensemble of real-data forecasts carried out with a primitive-equation numerical model in both global and hemispheric configurations. Although ...
Diagnostic Modeling of the Indian Monsoon Onset. Part II: Budget and Sensitivity Studies
Publisher: American Meteorological Society
Abstract: A one-dimensional diagnostic coupled air?sea model (described in the companion paper) is applied to the analysis of the heat and moisture budgets over the Arabian Sea during the 1979 monsoon onset period. The surface energy ...
Preferred Latitudes of the Intertropical Convergence Zone
Publisher: American Meteorological Society
Abstract: The latitude preference of the intertropical convergence zone (ITCZ) is examined on the basis of observations, theory, and a modeling analysis. Observations show that convection is enhanced at latitudes of about 4° to 10° ...
Diagnostic Modeling of the Indian Monsoon Onset. Part I: Model Description and Validation
Publisher: American Meteorological Society
Abstract: A new type of diagnostic model is developed and applied to the study of the onset of the Indian summer monsoon. The purpose of the model is to aid in the analysis of interactions between the physical processes that affect ...
Implications of Microphysics for Cloud-Radiation Parameterizations: Lessons from TOGA COARE
Publisher: American Meteorological Society
Abstract: A single-column model (SCM) and observational data collected during TOGA COARE were used to investigate the sensitivity of model-produced cloud properties and radiative fluxes to the representation of cloud microphysics ...
Predictability of Ultralong Waves in Global and Hemispheric Quasi-Geostrophic Barotropic Models
Publisher: American Meteorological Society
Abstract: A global quasi-geostrophic barotropic model, including orography, zonal forcing and frictional dissipation, is compared to two hemispheric models, one with antisymmetric equatorial boundary conditions and one with symmetric ...
A Numerical Study in Three Space Dimensions of Bénard Convection in a Rotating Fluid
Publisher: American Meteorological Society
Abstract: The primitive, nonlinear, Boussinesq equations of motion, continuity and thermodynamic energy are integrated numerically in three space dimensions and time to study convection driven by unstable vertical density gradients ...