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RISMaintenance of Quasi-Stationary Waves in a Two-Level Quasi-Geostrophic Spectral Model with Topography
Publisher: American Meteorological Society
Abstract: The maintenance of the quasi-stationary waves obtained through numerically integrating a two-level quasi-geostrophic spectral model on a ?-plane is studied. An idealized topography which has only wave-number n in the zonal ...
Cloud Simulations in Response to Turbulence Parameterizations in the GISS Model E GCM
Publisher: American Meteorological Society
Abstract: he response of cloud simulations to turbulence parameterizations is studied systematically using the GISS general circulation model (GCM) E2 employed in the Intergovernmental Panel on Climate Change?s (IPCC) Fifth Assessment ...
Sensitivity of a Global Climate Model to the Specification of Convective Updraft and Downdraft Mass Fluxes
Publisher: American Meteorological Society
Abstract: We examine the response of the GISS global climate model to different parameterizations of moist convective man flux. A control run with arbitrarily specified updraft mass flux is compared to experiments that predict cumulus ...
Development of a Two-Dimensional Zonally Averaged Statistical-Dynamical Model. Part III: The Parameterization of the Eddy Fluxes of Heat and Moisture
Publisher: American Meteorological Society
Abstract: A number of perpetual January simulations are carried out with a two-dimensional (2-D) zonally averaged model employing various parameterizations of the eddy fluxes of heat (potential temperature) and moisture. The ...
Vertical Eddy Heat Fluxes from Model Simulations
Publisher: American Meteorological Society
Abstract: Vertical eddy fluxes of heat are calculated from simulations with a variety of climate models, ranging from three-dimensional GCMs to a one-dimensional radiative-convective model. The models? total eddy flux in the lower ...
Development of a Two-Dimensional Zonally Averaged Statistical-Dynamical Model.Part II: The Role of Eddy Momentum Fluxes in the General Circulation and their Parameterization
Publisher: American Meteorological Society
Abstract: The effect of eddy momentum fluxes on the general circulation is investigated with the aid of perpetual January simulations with a two-dimensional, zonally averaged model. Sensitivity experiments with this model show that ...
Effects of Cloud Parameterization on the Simulation of Climate Changes in the GISS GCM
Publisher: American Meteorological Society
Abstract: Climate changes obtained from five doubled CO2 experiments with different parameterizations of large-scale clouds and moist convection are studied by use of the Goddard Institute for Space Studies (GISS) GCM at 4° lat ? ...
Effects of Cloud Parameterization on the Simulation of Climate Changes in the GISS GCM. Part II: Sea Surface Temperature and Cloud Feedbacks
Publisher: American Meteorological Society
Abstract: The influence of the sea surface temperature distribution on cloud feedbacks is studied by making two sets of doubled CO2 experiments with the Goddard Institute for Space Studies (GISS) GCM at 4° latitude ? 5° longitude ...
Effects of Cumulus Entrainment and Multiple Cloud Types on a January Global Climate Model Simulation
Publisher: American Meteorological Society
Abstract: An improved version of the GISS Model II cumulus parameterization designed for long-term climate integrations is used to study the effects of entrainment and multiple cloud types on the January climate simulation. Instead ...
Development of a Two-Dimensional Zonally Averaged Statistical-Dynamical Model. Part I The Parameterization of Moist Convection and its Role in the General Circulation
Publisher: American Meteorological Society
Abstract: The moist convection parameterization used in the GISS 3-D GCM is adapted for use in a two-dimensional (2-D) zonally averaged statisticai-dynamical model. Experiments with different versions of the parameterization show ...