Meteorological history
Around 1920, Pierre Knies and his son put forward a set of theories called "polar front theory" to explain the weather changes in mid-latitude areas. It has been more than 70 years since 1920s was published, but it is still the main theoretical basis for today's weather forecast, and it also lays a theoretical foundation for analyzing and forecasting the weather in the next 1-2 days. 1930 s, the extensive use of radiosondes really began the atmospheric science research in three-dimensional space. According to the high-altitude weather map drawn by a large number of detection data, the atmospheric long wave was found. 1939, Rossby proposed long-wave dynamics, and his theory also made great contributions to weather forecasting. 1From 1950s to 1960s, with the application of computer, weather radar, satellite and remote sensing technology, all kinds of atmospheric phenomena, from atmospheric circulation to raindrop formation, can be expressed in physical and chemical mathematical forms, thus making atmospheric science develop by leaps and bounds.