Which mechanism causes signal fading in long-distance radio wave communication through troposphere?

💡 Explanation

When radio waves propagate, scattering occurs because rapid changes in tropospheric refractive index due to fluctuations in temperature, humidity and pressure cause portions of the wave to be redirected. Therefore, fading results from signal dispersion, rather than diffraction, absorption, or ionospheric refraction which are driven by different atmospheric conditions and frequencies.

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