Hourly Variation of Gaseous Attenuation in Tropical Station
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Attenuation by water vapor and oxygen is one of the major reasons electromagnetic waves in some
frequency bands get degraded. It is of key importance to study, understand and mitigate these effects as
much as possible. In this work, hourly attenuation due to water vapor also known as wet attenuation as
well as attenuation due to oxygen, known as dry attenuation in decibel per kilometer was calculated for
the Ka, Ku and V frequency bands. The International Telecommunications Union‐676 model was used to
calculate these values using 60 seconds integration time measured values of Pressure, Temperature and
Relative humidity. These parameters were obtained from the Covenant University Davis‐Pro Automatic
weather station installed in Ota, Nigeria. The computed results between April and December 2012 are
hereby presented.
Keywords
Q Science (General), QC Physics