Abstract
In this paper, a visualized and dynamically displayed method of AMeDAS data is applied to weather analysis in the Hokuriku District, namely Toyama, Ishikawa and Fukui Prefectures. In these three prefectures, there are 29 measurement points when measuring the four meteorological elements (air temperature, wind direction-wind speed, sunshine duration and precipitation). In order to clarify the relationship of the weather and geographical features more precisely 50m and 250m-mesh digital map data of the Geographical Survey Institute of the Ministry Construction were used to display the background. Therefore, the possible sunshine durations in this district were calculated from the declination angles of the sun and by the longitude and latitude using sunrise and sunset time data of the National Astronomical Observatory(Tokyo). The other details are almost analogous to the report of Part 2. From this analysis, the relationship of meteorological elements and hourly behavior of the weather phenomena become visually evident. However, it was found that an actual sunshine duration was very dependent not so much on possible sunshine duration, but on natural features and the quantity of clouds obscuring these areas.
