Author's Name:	Amal J. Salim & Monim H. K. Al – Jiboori
Subject Area:	Science and Engineering
Subject	Physics and Astronomy
Section	Research Paper

Climate, Standardized anomaly, Frequency, Percentage of frequencies, Power spectral density.

The results of the analysis of the annual rates of air temperature of the cities studied showed that Basra and Rutba stations are more variation from stations of Baghdad and Mosul, but we noticed through the drawing that the year 2010 had a higher degree of air temperature annual rates throughout the country. The annual standardized anomaly of air temperature was calculated for the stations studied above and has been shown that Basra station does not have a large degree of positive and negative standardized anomaly for this element. From these results the energies of spectral density were calculated for both monthly and annual standardized anomalies of air temperature which show that the maximum values of the energies of spectral density is fair for the mean monthly in Mosul and Baghdad but for the mean annual is abvious in Basra and Baghdad.