| 摘要 |
PURPOSE:To obtain accurate rainfall probability readily in time when required, by a method wherein rainfall probability is selected from a storing part according to an atmospheric pressure value measured by a pressure sensor. CONSTITUTION:The present atmospheric pressure measured by a pressure sensor 18 is inputted to an atmospheric pressure value-display contents selecting circuit 21 through a pressure-voltage converter 19 and an A-D converter 20. The rainfall probability is selected according to the above atmospheric pressure value from contents of an atmospheric pressure value-rainfall probability storing part 22, and is displayed on a display 13. The selecting circuit 21 selects the correlation data broadly divided into the data in the Pacific side and in the Japan-sea side according to a signal from a region selecting switch 16, and selects the correlation data in the forecasting time range designated by a forecasting time selecting switch 17. Accordingly, the accurate rainfall probability is provided readily in time when required. |
