Abstract: Observations made from an Oklahoma City TV tower are first used to test the one- and two-dimensional versions of a numerical mesoscale model. Both model versions produce a fairly good reproduction of the observed typical ...

Abstract: Global ECMWF data for winter and summer seasons are used to study the spectral structure of 500 mb analyzed height variance and forecast error variance, as well as the effect of spectral truncation in the height and ...

Abstract: The Euler-backward time integration method is discussed and it is suggested that a second backward iteration could be advantageous, allowing strong damping of short waves, very small phase error and long time step at the ...

Abstract: Internal and external z500 global total rms errors followed quadratic growth laws quite well in NMC Medium-Range Forecast (MRF) Model 0?10-day forecasts for 1988?93. Growth parameters and model and analysis errors for many ...

Abstract: Three fast and simple longwave broadband radiation parameterization schemes were tested against a reference narrow-band model in clear sky conditions. The three schemes gave rather similar results. The emissivity dependence ...

Abstract: The summertime Martian PBL diurnal wind variation, slope winds, and the nocturnal low-level jets were studied using Prandtl's theory, a mesoscale numerical model, and Viking lander observations. During moderate prevailing ...

Abstract: The budget equations for the transient variance of a scalar s (s?2?) and its squared time mean (s2?) are derived for a hydrostatic fluid. They are discussed and illustrated with two alternative box diagrams. The 10 yr ...

Abstract: A two-dimensional nonlinear model with physical parameterizations was applied to simulate the observed diurnal variation on the 5-km-wide flat tropical island of Nauru in the trade wind zone. Both the model and Atmospheric ...