Seasonal Variation of Surface Radio Refractivity and Water Vapour Density for 48 Stations in Nigeria
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Abstract
Description
The monthly and seasonal variation of surface
refractivity and water vapour density were studied using thirtynine
years meteorological data for forty-eight stations in Nigeria.
The factors which influence the transmission of radio signals
operating within the troposphere are water vapour and
refractivity. The results show that the surface refractivity and
water vapour density generally have higher values during the
rainy season than dry season at all station studied. Furthermore
the results show that the value of surface refractivity and water
vapour density varies from about 263 N-units and 3 g/m3 in arid
region of Nigeria (North East) to about 393 N-units and 23 g/m3
in the coastal area of Nigeria (South West) respectively. For
optimal performance of terrestrial radio link across Nigeria it is
required to account for the variability of these parameters for
optimal systems design.
Keywords
Q Science (General), QC Physics