What is the meteorological band?

There are no bands in meteorology. The meteorological band you mentioned should be the most important detection tool used by meteorological departments in detecting weather systems, and meteorological radar has one band. Weather radar uses a wide range of radio wavelengths, from 1 cm to 1000 cm. They are usually divided into different bands to represent the main functions of radar. The commonly used wavelengths of 1, 3, 5, 10 and 20cm correspond to K-band (wavelength 0.75 ~ 2.4cm), X-band (wavelength 2.4 ~ 3.75cm), C-band (wavelength 3.75 ~ 7.5cm) and S-band (wavelength 7.5 ~ 65cm) respectively. The performance of radar in detecting atmospheric targets is closely related to its working wavelength. Considering the scattering and absorption of radio waves by cloud and rain particles, various bands have only a certain scope of application. K-band radar is often used to detect all kinds of clouds that do not produce precipitation, while X-band, C-band and S-band radars are used to detect precipitation, among which S-band radar is most suitable for detecting rainstorm and hail, and ultra-high frequency and ultra-high frequency radar with high sensitivity can detect the clear sky flow field in troposphere-stratosphere-middle layer.