Abstract: Increasing concern over possible anthropogenic impact on climate has led to an awareness that straightforward diagnostic procedures are necessary to measure climate and climate change in computer model experiments. Since ...

Abstract: Traditionally the climate simulated by an atmospheric general circulation model (GCM) has been presented in terms of individual monthly or seasonal averages from a single realization. A more complete description of GCM ...

Abstract: A twenty-year integration of an atmospheric general circulation model with identically evolving prescribed surface boundary conditions each year is employed to provide a measure of the interannual variability obtainable ...

Abstract: For the past two years, the authors have been involved in the production of computer-animated movies at the National Center for Atmospheric Research (NCAR). The computer-generated frames are high-quality graphs of two- and ...

Abstract: Experiments are often performed with numerical forecast models to determine the response to a changed model formulation, initial conditions or boundary conditions. Such experiments are inherently subject to sampling error ...

Abstract: The mechanisms responsible for forcing the global Walker circulation are investigated with a series of experiments using an atmospheric model developed at the Goddard Institute for Space Studies. These experiments feature ...

Abstract: A coarse-mesh, global climate model developed at the Goddard Institute for Space Studies (GISS) has been used to assess the influence of ocean surface temperature (OST) gradient and continentality on the Walker circulation. ...

Abstract: Vertically-averaged meridional transports of westerly momentum are analyzed in sampled ensembles of January simulations of an NCAR GCM and an equivalent ensemble of five years of observational January data according to a ...

Abstract: January and July experiments were performed with the NCAR general circulation model (GCM) to assess the potential climatic impact of the thermal energy released from a projected United States cast coast megalopolis circa ...

Abstract: General Circulation Models (GCM's) of the earth's atmosphere have been frequently used to test different mechanisms for climate change. Typically, these tests involve comparing the statistics of the model with a prescribed ...