Time Series Analysis of Southern Oscillation Index and Temperature over Iraq

Abstract

El Nino Southern Oscillation is believed to be responsible for some climate change in the world. The aim of this work is to investigate the relationship between the Southern Oscillation Index (SOI) and the monthly mean temperature over Iraq. Time series of SOI and temperature for the period of 1900 to 2008 were analyzed. Pearson, Spearman, and Mann-Kendall non-parametric tests were carried to see how the SOI and temperature time series are correlated. The results showed the correlation coefficients were slight for all the locations suggesting that there is no relationship between SOI and temperature over Iraq.