Derivation of path reduction factor from the Malaysian meteorological radar data

Rain does not distribute evenly in a region experiencing precipitation. This is especially true in tropical regions as rain has been found to be more convective in nature rather than widespread. ITU-R has given the necessary information to calculate the attenuation due to rain in dB/km. However, to predict the total amount of attenuation due to rain that a microwave link might suffer, a path reduction factor is needed to account for the variability of rain rate occurring along the propagation path.