This study investigates
the variability and periodicity of minimum temperature, maximum temperature and
sunspot number—a solar activity index in selected synoptic stations across Nigeria
from 1946 to 2010. Annual and semiannual effect of solar activity on minimum
temperature was observed in all the six stations. This was indicated in the
occurrence of modal periodicities of 6-month and 12-month observed across the
six synoptic stations. The synoptic stations are Sokoto (13.01°N, 5.15°E),
Ilorin (8.29°N, 4.35°E), Ikeja (6.35°N, 3.20°E), Enugu (6.28°N, 7.33°E),
Port-Harcourt (4.51°N, 7.01°E) and Maiduguri (11.51°N, 13.05°E). Similarly, the
trends of inter-decadal va-riability of minimum and maximum temperature show a
non-uniformity increase over the analyzed period with a slight decrease before
1960. The long term behavior of minimum and maximum temperature shows a warming
rate which ranges from 0.1°C/decade to 0.2°C/ decade
across the six stations except for maximum temperature at Ilorin and minimum
temperature at Sokoto which is at -0.2°C/decade and 0.3°C/decade respectively.
Cite this paper
Olusegun, C. , Rabiu, A. , Ndeda, J. and Okogbue, E. (2014) Trends of Temperature and Signature of Solar Activity in Selected Stations in Nigeria. Atmospheric and Climate Sciences
, 171-178. doi: 10.4236/acs.2014.42020
 Gyori, L., Baranyi, T., Turmon, M. and Pap, J.M. (2004) Study of Differences between Sunspot Area Data Determined from Ground-Based and Space-Borne Observations. Advances in Space Research, 34, 269-273.
 Rind, D. (2002) The Sun’s Role in Climate Variations. Science, 296, 673-678.
 Tobiska, W.K., Woods, T., Eparvier, F., Viereck, R., Floyd, L., Bouwer, D., Rottanman, G and White, O.R. (2000) The SOLAR2000 Empirical Solar Irradiance Model and Forecast Tool. Journal of Atmospheric and Solar Terrestrial Physics, 62, 1233-1250. http://dx.doi.org/10.1016/S1364-6826(00)00070-5
 Rabiu, A.B. (2004) Semiannual Variation of Geomagnetical Activity AK Index and its Response to Solar Activity. Zuma Journal of Pure and Applied Sciences (ZJPAS), 6, 40-47
 Odjugo, P.A. and Ikhuoria, A.I. (2003) The Impacts of Climate Change and Anthropogenic Factors on Desertification in the Semi-Arid Region of Nigeria. Global Journal of Environmental Science, 2, 118-126.
 Jimoh, H.I. (2003) Erosion Tolerance Range of Land Use Surfaces: Implication on Land Resource Use and Management Techniques in Ilorin Nigeria. International Journal of Environmental Studies, 60, 446.
 University of Ilorin (1982). Ilorin Atlas. Ilorin University Press, Ilorin.
 Ojo, O. (1977) Climates of West Africa. Heineman Publishers, Ibadan.
 Iloeje, N.P. (1981) A New Geography of Nigeria. New Revised Edition, Longman Publishers, London.
 Trenberth, K.E., et al. (2007) Observations: Surface and Atmospheric Climate Change Climate Change 2007—The Physical Science Basis: Working Group I Contribution to the Fourth Assessment Report of the IPCC. In: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M.C., Averyt, K.B., Tignor, M. and Miller, H.L., Eds., Cambridge University Press, Cambridge.
 Russell, C.T. and Mcpherron, R.L. (1973) The Magnetotail and Substorms. Space Science Reviews, 15, 205.
 Szabo, A., Lepping, R. and King, J. (1995) Magnetic Field Observations of the 1.3-Year Solar Wind Oscillation. Geophysical Research Letters, 22, 1845-1848. http://dx.doi.org/10.1029/95GL01737
 Gazis, P.R., Richardson, J.D. and Paularena, K.I. (1995) Long Term Periodicity in Solar Wind Velocity during the Last Three Solar Cycles. Geophysical Research Letters, 22, 1165-1168. http://dx.doi.org/10.1029/95GL01017
 Gazis, P.R. (1996) Long Term Enhancements in the Solar Wind Speeds. Journal of Geophysical Research, 101, 415-424. http://dx.doi.org/10.1029/95JA02638