In Meteorology, What Is Station Pressure?

Radio meteorology refers to the study of the influence of the atmosphere on the propagation of radio waves, and the use of received radio wave information to detect atmospheric conditions and weather phenomena. It uses radio wave propagation principles and technologies extensively. It is a fringe discipline of atmospheric science and radio physics, and a branch of atmospheric physics.

Radio meteorology is a discipline that studies the relationship between the propagation of electromagnetic waves and atmospheric phenomena. It mainly studies the internal mechanism and regularity of the scattering, refraction, reflection and absorption of radio waves by the atmosphere and its suspended matter.

Due to the difference in atmospheric temperature, density, electrical properties, humidity, and the concentration of impurities contained, the refraction, reflection, scattering, and absorption of radio waves propagating in them are also different. In addition, some atmospheric processes themselves can emit radios. Therefore, people can use radio waves to detect remote sensing of meteorological processes and weather phenomena, and certain characteristics and processes of the atmosphere, which greatly improves the means of meteorological observation. Through the research of radio meteorology, we can also understand and grasp the influence of atmospheric phenomena and processes on radio waves, and effectively use radio for remote transmission. ^[1]

Radio meteorology is widely used in dealing with communication and positioning and speed measurement issues, because it can accurately correct errors caused by atmospheric refraction, estimate the effects of atmospheric flicker, and analyze communication conditions under cloud and rain conditions. Among them, the microwave and radiation characteristics of the atmosphere and clouds and rain have become the basis for microwave remote sensing and radar detection. The propagation characteristics of radio waves in the troposphere depend on the atmospheric refraction index, such as the radio wave refraction caused by the uneven distribution of the atmospheric refraction index, the radio wave scattering caused by the random fluctuation of the atmospheric refraction index, and so on.

In addition to directly improving radio communications, radio meteorology can also use the principle of the absorption, scattering, and refraction of radio waves by the atmosphere and clouds, rain, and turbulence to study and use active or passive microwave atmospheric remote sensing equipment to detect the atmospheric Distribution of temperature, humidity, cloud, rain elements and atmospheric turbulence, and analysis of weather processes (see Weather Radar). Due to the development of microwave short wave (such as millimeter wave or sub-millimeter wave) technology, the application of these bands in atmospheric remote sensing and communication has achieved certain results.

The ultrashort wave in the radio has a wide band to use, and it can use a small antenna to get good directivity of transmission and reception, which can save power and meet the confidentiality requirements of military communications. ^[6]