バロトロピック渦度方程式の図式解法とその予報への応用

増田 善信

doi:10.2151/jmsj1923.33.6_280

バロトロピック渦度方程式の図式解法とその予報への応用

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増田善信

気象研究所

書誌事項

タイトル別名

On a Graphical Integration of the Barotropic Vorticity Equation and its Application to the Numerical Weather Forecast
バロトロピックウズドホウテイシキノズシキカイホウトソノヨホウエノオウヨウ

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説明

The Fjørtoft's graphical method of integrating the barotropic vorticity equation is developed under some approximate assumptions. By this method, the relaxation procedure or the Fjørtoft's approximate integration formulae for solving the Poisson type equation are not necessary. And farther, as the changes in Fjørtoft's “quasi-permanent velocity field” are considered by this method, the results of prediction may be improved and time intervals of prediction may be prolonged than the Fjørtoft's method.<br>A graphical procedure for the numerical weather forecast is derived and the results of its application for 12hrs, 24hrs and 48hrs forecast are also shown.