Brief introduction of weather map

1820, German H.W. brandes filled in the simultaneous observation records of past air pressure and wind, and drew the world's first weather map. 185 1 year, J. Glaisher of Britain exhibited the first ground weather map drawn by collecting meteorological data from various places by telegraph at the Royal Expo, which was a pioneer of modern ground weather maps. In 1930s, after the establishment of the world high-altitude observation network, the high-altitude weather map appeared. According to the size of Tu Tu weather area, there are global weather map, hemisphere weather map, intercontinental weather map, national weather map and regional weather map. Meteorological observation records on weather maps are collected by meteorological stations all over the world at the same time with almost the same instruments and unified specifications. The ground weather map is drawn four times a day, using the observation data of Beijing time at 02: 00, 08: 00, 14: 00 and 20: 00 (namely, Universal Time 18: 00, 06: 00 and 12) respectively. The upper-air weather map is drawn twice a day, using the observation data at 08: 00 and 20: 00 Beijing time (00: 00 Universal Time, 12: 00).