机制地面气象记录月报表流程简介

机制地面气象记录月报表流程简介张会琴（陕西省气候资料室西安·７１００１５）地面气象记录月报表（气表一１）的计算机制作，从１９９３年４月全面铺开，至今已经完成了九个月的工作量。气表一１的机制工作，是在基本站机制的基础上展开的，这项工作在我省尚属首次。其...     

Rossby waves with linear topography in barotropic fluids

Rossby waves are the most important waves in the atmosphere and ocean, and are parts of a large-scale system in fluid. The theory and observation show that, they satisfy quasi-geostrophic and quasi-static equilibrium approximations. In this paper, solitary Rossby waves induced by linear topography in barotropic fluids with a shear flow are studied. In order to simplify the problem, the topography is taken as a linear function of latitude variable y, then employing a weakly nonlinear method and a perturbation method, a KdV （Korteweg-de Vries） equation describing evolution of the amplitude of solitary Rossby waves induced by linear topography is derived. The results show that the variation of linear topography can induce the solitary Rossby waves in barotropic fluids with a shear flow, and extend the classical geophysical theory of fluid dynamics.