(2017). Rainfall Variability in Asir Area – Abha and KhamisMushait Stations (1978 -2014). The Egyptian Journal of Environmental Change, 9(1), 23-29. doi: 10.21608/ejec.2017.96540
. "Rainfall Variability in Asir Area – Abha and KhamisMushait Stations (1978 -2014)". The Egyptian Journal of Environmental Change, 9, 1, 2017, 23-29. doi: 10.21608/ejec.2017.96540
(2017). 'Rainfall Variability in Asir Area – Abha and KhamisMushait Stations (1978 -2014)', The Egyptian Journal of Environmental Change, 9(1), pp. 23-29. doi: 10.21608/ejec.2017.96540
Rainfall Variability in Asir Area – Abha and KhamisMushait Stations (1978 -2014). The Egyptian Journal of Environmental Change, 2017; 9(1): 23-29. doi: 10.21608/ejec.2017.96540
Rainfall Variability in Asir Area – Abha and KhamisMushait Stations (1978 -2014)
Saudi Arabia has an extremely dry climate, but in the southwest region, comparatively, more rainfall events occur within the effects of topography and seasonality.
This article focuses on studying and analysing the rainfall variability in Asir area. Data for rainfall variability was collected from the Metrological Station in Abha and Khamis Mushait for the period from 1978 to 2014. Statiscal analyses were carried to determine variability in annual rainfall among years for each station separately. The mean, standard deviation, and coefficient of variation were used to calculate the rainfall variability on long-term annual basis.
Present results for Abha and khamis separately: Abha showed rainfall varied and fluctuated over the time, with lower value of 84.8 mm in 2009, and higher value of 639.5 in 1983.and mean of 254.0.mm over the years, and Khamis showed rainfall varied with lower value of 34.1 in 2009, and higher value of 355.9 in 1997and mean of 178.7mm. The average annual rainfall reached more than 202.9 mm. Variation among the years was high with a coefficient of variation for equal to 0.64 and the standard deviation was 110.2 and the standard error of the mean was 102.8.
-Abdullah, M.A.;Al-Mazroui, M.A. Climatological study of the southwestern region of Saudi Arabia. I. Rainfall analysis.Clim. Res. 1998, 9.
-Ahmed, B.Y.M.Climatic classification of Saudi Arabia: An application of factor cluster analysis. GeoJournal 1997, 41.
-Ali . M. Subyani, (2004),Geostatistical study of annual and seasonal mean rainfall patterns in southwest Saudi Arabia. Hydrological Sciences–Journal–des Sciences Hydrologiques, 49(5) October 2004 Open for discussion until 1 April 2005.
-Al-Jerash, M.A.Climatic subdivisions in Saudi Arabia: An application of principal component analysis. Int. J. Climatol. 1985, 5.
-Almazroui, M.A. Calibration of TRMM rainfall climatology over Saudi Arabia during 1998–2009.
-Al-Mazroui, M.A. Climatological Study over the Southwestern Region of the Kingdom of Saudi Arabia with Special Reference to Rainfall Distribution. Master Thesis, Department of Meteorology, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia, 1998.
-Al-Taher, A.A. Drought and human adjustment in Saudi Arabia. GeoJournal 1994, 33.
-Köppen, W. Das geographisca system der klimate. In Handbuch der Klimatologie;Köppen, W., Geiger, G., Eds.; 1.C. Gebr, Borntraeger:Stuttgart, German,1936.
-Subyani, A.M.; Al-Modayan, A.A.; Al-Ahmadi, F.S. Topographic, seasonal and aridity influences on rainfall variability in western Saudi Arabia. J. Environ. Hydrol. 2010, 18,.
-Subyani, A.M.Geostatistical study of annual and seasonal mean rainfall patterns in southwest Saudi Arabia.Hydrol. Sci. J. 2004, 49.
-The Ministry of Hydrology. Water Atlas of Saudi Arabia; Water Resource Department, Ministry of Agriculture and Water: Riyadh, Saudi Arabia, 1984.