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Dailey Rainfall Persistence of Selected Stations in Iraq | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 21, Issue 5, 2010, Pages 480-484 | ||
| Author | ||
| Amani Ibraheem Al-Temimi | ||
| Abstract | ||
| This research deals with one of predication methods that are persistence (continuity) of the meteorological elements which have discontinuous nature such as rainfall.Avariation in rainfall persistence is one of the important facts which effects on agriculture. Besson’s coefficient of persistence (RB) and a coefficient comparable to a correlation coefficient (rB) for rainfall persistence have been calculated for four stations (Mosul , Rutba, Baghdad , Basra) representing the north, south, east and west of Iraq. We have used the mean daily monthply rainfall during the period of the year (1971 - 2000) and the results have shown for each of the values of (RB, rB) a good persistence in rainfall where were all the values close to one. The highest persistence rainfall in Rutba station where(RB = 0.98) (rB = 0.75) ,while Baghdad is the second station of a persistence rainfall (RB = 0.92) (rB = 0.73), then Basra is the third station in persistence rainfall (RB = 0.89) (rB = 0.72) and the lowest value of Besson’s coefficient of persistence( RB) and the coefficient comparable to a correlation coefficient( rB) for the rainfall in Mosul station (RB=0.81),( rB=0.69) although the highest total number of rainy days was in this station, but it ’s the lowest persistence of rainfall among the selected station during the time period. | ||
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