Composition of world weather watch

world weather watch is divided into three levels: world meteorological center, regional meteorological center and national meteorological center. There are three world meteorological centers: Washington, Moscow and Melbourne. Regional meteorological centers have changed greatly. By 1985, there were Wellington, Darwin, New Delhi, Tokyo, Beijing, Tashkent, Khabarovsk, Novosibirsk, Norchepin, offenbach, Bracknell, Miami, Montreal/Toronto, Buenos Aires, Brasilia, Rome, Casablanca, Dhaka, Algiers, Kano/Lagos, Nairobi, Cairo and Antanana. The National Meteorological Center is the meteorological service center of all countries, and its setting and scale are quite different. World weather watch's operational system consists of the following three systems: ① Global Observing System (GOS). By 198, there were 9,218 ground stations, 835 high-altitude stations, 9 fixed-point ocean weather stations, 5 stationary meteorological satellites, 2 polar-orbiting satellites, thousands of ships that volunteered to undertake ground observation, and some flights that could provide meteorological observation reports on routes. Its task is to provide basic meteorological observation data and environmental observation data around the world for members' daily business and research work. ② Global Telecommunication System (GTS). It consists of three-level telecommunication lines (trunk line and its branches, regional telecommunication network and national telecommunication network) and three-level telecommunication centers (World Meteorological Center, regional telecommunication hub and National Meteorological Center) (see meteorological information transmission). Its task is to collect and distribute the basic meteorological observation data from the global observation system and forward the output products (including processed data, live maps, forecast maps and warnings, etc.) of the World Meteorological Center and regional meteorological centers. ③ Global Data Processing System (GDPS). The main task is to provide processing basic meteorological data for members through institutions such as World Meteorological Center, Regional Meteorological Center and National Meteorological Center. In addition, the World Meteorological Center and the Regional Meteorological Center also have the responsibility of storing data.