Alternative definitions (2), class: vernacular (0)
Term: ionosphere

The region of the Earth’s upper atmosphere containing free electrons and ions produced by ionization of the constituents of the atmosphere by solar ultraviolet radiation at short wavelengths < 100nm) and energetic precipitating particles. The ionosphere influences radiowave propagation of frequencies less than about 300 MHz. (See D region, E region, F region.)

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan