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The impacts of meteorological parameters on the seasonal, monthly, and annual variation of radio refractivity

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Abstract

Results of the variations of radio refractivity, computed from the measurements of ambient temperature, atmospheric pressure, and relative humidity, were studied in Calabar for a period of 12 years (2005–2016) with the archived data provided by the Nigerian Meteorological Agency (NIMET). Correlation plots and modeling show that refractivity is mostly affected by the water vapor content of the atmosphere, and this means that relative humidity can be used to accurately develop models for the variations of refractivity as the refractivity variation within a year showed an almost uniform value which corresponded to the monthly relative humidity trend. The annual variation of refractivity also corresponded to the annual variation of relative humidity with its highest coming in 2012 with 391 N Units. Results also show that the ambient temperature and the atmospheric pressure in the region are not reducing annually and this has a very significant effect on climate change. On climate change, the obtained meteorological parameters have over the years affected the climate of the region as an increase in annual atmospheric pressure as well as the relative humidity has brought about a steady increase in amount of heat retained on the earth’s surface; this is due to the water vapor (a greenhouse gas) in the atmosphere of this region.

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Authors and Affiliations

  1. Cross River University of Technology, Calabar, Nigeria

    E. P. Agbo, E. B. Ettah & E. E. Eno

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  1. E. P. Agbo
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  2. E. B. Ettah
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  3. E. E. Eno
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Correspondence to E. P. Agbo.

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Agbo, E.P., Ettah, E.B. & Eno, E.E. The impacts of meteorological parameters on the seasonal, monthly, and annual variation of radio refractivity. Indian J Phys 95, 195–207 (2021). https://doi.org/10.1007/s12648-020-01711-9

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  • DOI: https://doi.org/10.1007/s12648-020-01711-9

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