Sumida River the oldest and most famous firework displays in Japan, are launched from barges across the river, between Ryōgoku and Asakusa during Summer, a festival is also held at the same time. The poet Matsuo Bashō lived by the Sumida River, alongside the famous banana tree (Japanese: bashō) from which he takes his nom de plume. The Sumida River appears in a haiku by Issa from 1820: "spring peace--a mouse licking upSumida River" The Sumida runs through Tokyo for 27 kilometers, under 26 bridges spaced at about one bridge per kilometer. Amongst these, the principal ones are: Sumida River The is
Arakawa grids a single face of the rectangular domain. Haltiner, G. J., and R. T. Williams, 1980. Numerical Prediction and Dynamic Meteorology. John Wiley and Sons, New York. Arakawa grids The Arakawa grid system depicts different ways to represent and compute orthogonal physical quantities (especially velocity- and mass-related quantities) on rectangular grids used for Earth system models for meteorology and oceanography. For example, the Weather Research and Forecasting Model uses the Arakawa Staggered C-Grid in its atmospheric calculations when using the ARW core. The five Arakawa grids (A-E) were first introduced in Arakawa and Lamb 1977. For an image of the five