Brief introduction of weather map

In 182, German H.W. brandes filled in the simultaneous observation records of air pressure and wind in various places in the past and drew the first weather map in the world. In 1851, J. Glaisher of England exhibited the first ground weather map drawn by collecting meteorological data from various places by telegraph at the Royal Exposition, which was a pioneer of modern ground weather maps. In the 193s, after the establishment of the high-altitude observation network in the world, there was a high-altitude weather map. According to the size of the weather Tu Tu area, there are global weather maps, hemispheric weather maps, intercontinental weather maps, national weather maps and regional weather maps. Meteorological observation records on weather maps are collected by meteorological stations all over the world with nearly the same instruments and unified specifications at the same time. The ground weather map is drawn four times a day, using the observation data at 2: , 8: , 14: and 2: Beijing time (that is, 18: , 6: and 12: Universal Time) respectively; The upper-air weather map is drawn twice a day, using the observation data at 8: and 2: Beijing time (: and 12: Universal Time).