Using Wavelet Transformation to Examine the Varation of Relative Humidity and Maximum Temperature in Nigeria

Abstract

The relative humidity and maximum temperature was investigated between the year 2003 and 2012 for some selected stations in Nigeria (Abuja, Maiduguri, Owerri, Ibadan, Calabar and Kano). The Wavelet Power Spectrum (WPS) was used to examine the yearly variation of relative humidity and maximum temperature for the selected stations. It was observed that high maximum temperature were noticed at the northern part of Nigeria (Maiduguri and Kano) while high relative humidity was observed at low altitude stations (Calabar and Owerri). At high altitude, the maximum temperature increases and relative humidity decreases because the rainfall available for evaporation might be small. This implies that the station far from the sea side receives more solar radiation while the station near the sea side receives less solar radiation.