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Correlation Between NAO and Radio Refractive Index Over Africa

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Part of the book series: Advances in Science, Technology & Innovation ((ASTI))

Abstract

The pathway of a propagated radio waves is partly determined by the refractive index of the atmosphere through which the waves traverse. The radio refractive index is in turn governed by the variations in the meteorological parameters while the Northern Atlantic Oscillation (NAO) has been found to influence temperature and precipitation patterns. This study investigated the correlation between NAO and radio refractive index over Africa using 30 years data of daily meteorological parameters and NAO, spanning from 1981 to 2010. Rainforest and Desert climate recorded the highest (>290 N-units) and the lowest (<200 N-units) radio refractive index, respectively. The correlation is observed to be generally weak (−0.2 to 0.2).

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Correspondence to Joseph Dada .

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Dada, J., Adediji, A.T., Adedayo, K., Ajewole, M. (2019). Correlation Between NAO and Radio Refractive Index Over Africa. In: Zhang, Z., Khélifi, N., Mezghani, A., Heggy, E. (eds) Patterns and Mechanisms of Climate, Paleoclimate and Paleoenvironmental Changes from Low-Latitude Regions. CAJG 2018. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-030-01599-2_28

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