Abstract: The weighting factors used in conventional objective analysis methods are reviewed on the basis of numerical variational analysis. Special emphasis is placed on anisotropy (ellipticity) of the factors. The weighting factors ...

Abstract: The formation of a prefrontal squall line is studied, based on a numerical method of solving the modified equation of motion, continuity (mass and moisture content), and thermodynamics simultaneously. Due to the limited ...

Abstract: The ?timewise localized? variational formalism of the numerical variational analysis method is used (1) to filter and suppress unnecessary high-frequency noises contained in initial and forecast fields and (2) to obtain ...

Abstract: An investigation of the numerical variational analysis method is made for a case of ?weak constraint? where the subsidiary condition is given in the form of an approximation. The simple example of a system moving with an ...

Abstract: This study aims at the theoretical development of a method of ?four-dimensional analysis,? namely the numerical variational analysis. The three basic types of variational formalism in the numerical variational analysis ...

Abstract: A technique for the objective analysis of air pollution based on the calculus of variations is described. Rather than find a system of diffusion coefficients which best fit a source inventory and receptor sampling, a series ...

Abstract: Individual thermals rising through the atmosphere may encounter the wake of one or more thermals that started their rise at an earlier time. Laboratory simulations show that the growth rate of second and third thermals in ...

Abstract: Solitary thermals and continuous plume thermals both occur in nature, and the intermediate case of interacting successive thermals in a series may also be an important part of atmospheric convection. This analysis shows ...

Abstract: The purpose of this research is to investigate, by means of numerical simulation experiments, the complex interactions between consecutive toroidally circulating buoyant elements (thermals) when these occur in either ...

Abstract: Axially symmetric thermal convection in a rotating environment with a friction layer is investigated by numerically integrating an appropriate system of equations. The study examines the influence of the friction layer ...