STATISTICAL ANALYSIS OF RECORDES AT THREE MAJOR METEOROLOGICAL STATIONS IN JORDAN" November, 2004

Abstract: This article deals with the statistical analyses of the rainfall measurements for three meteorological stations in Jordan, Amman Airport (central Jordan), Irbid (northern Jordan) and Mafraq (eastern Jordan). Normal statistical, harmonic and power spectrum analyses as well as time series analyses were performed on the long-term annual rainfall measurements at the three stations. The result showed that the most expected cyclicity is of order of 3-4 years in all the meteorological stations. A time series model for each station was fitted, processed, diagnostically checked and lastly an ARIMA model for each station is established with a 95% confidence interval. The results indicate a decreasing trend for forecasted rainfall results in all station.