AMeDAS, The Weather Forecasting System
In Japan, the citizens commonly run their activity based on the weather forecast. It's because, Japan is well known with the precise weather forecast and all the citizen of Japan are believe in it. So that the weather forecast, including the system and the device, are very important to all the Japanese people. The Automated Meteorological Data Acquisition System (AMeDAS) is a collection of Automatic Weather Stations (AWSs) run by JMA (Japan Meteorological Agency) is the device for automatic observation weather aspects to support realtime monitoring of weather conditions with high temporal and spatial resolution. An AMeDAS observing station measuring precipitation, wind direction/speed, temperature and sunshine duration (with snow cover meter). JMA began operating the AMeDAS system, which now currently spreaded all around Japan at average intervals of 17 km nationwide, on 1st November 1974.