Abstract
An accurate estimation of the potential evapotranspiration can be achieved ba applying empirical evapotranspiration coefficients which are determined under Al-Hassa prevailing climatic conditions.
Correlation coefficient results indicate that most of the climatological variables have a strong relationship with potential evapotranspiration except wind speed and precipition variables which have a weak relationship. Multiple regression results also indicate that there is a significant effect of some of the climatologiecal variables in the potential evatranspiration and there is no significant effect of the others at the significant level of 0.05. The results of the stepwise regression indicate that evaporation class “A” pan, air temperature, sunshine hours, radiation, relative humidity, and wind speed variables have a significant effect at the significant level of 0.05 on the overall mean monthly potential evapotranspiration of the Blaney-Criddle, Pan Evaporation, and Jensen-Haise, therefore, the equation which has developed for estimating potential evapotranspiration in Al-Hassa is based on these six variables (evaporation class “A” pan, air temperature, sunshine hours, radiation, relative humidity, and wind speed).
Similar content being viewed by others
References
Al-Taher, Abdulla A.S.: Irrigation Efficiency and Production Energy Efficiency of Traditional and Modern Farms in the Al-Hassa Oasis, Saudi Arabia Unpublished Ph.D. Dissertation, Univ. of Oklahoma, Norman, Oklahoma 1987.
Blaney, H. F.; Criddle, W. D. Determining Water Requirements in Irrigated Areas from Climatological and Irrigated Data. United States Department of Agriculture, Soil Conservation Service, Washington 25, DC 1950.
Blaney, H. F.; Criddle W.F.: Determining Consumptive Use and Irrigation Water Requirements. United States Department of Agriculture, Technical Bulletin 1275, 1962.
Burman, R. D.; Nixon, P. R.; Wright, J. L.; Pruitt, W. O.: Water Requirements. In: Jensen, M. E. (ed.), Design and Operation of Farm Irrigated Systems. American Society of Agricultural Engineers, 1983.
Doorenbos, J.; Pruitt, W. O.: Crop Water Requirements. FAO Irrigation and Drainage Paper, Publication No. 24, 1977.
Elliott, R. L.: Evapotranspiration Estimates for the Oklahoma Panhandle. American Society of Agricultural Engineers, St. Joseph, Michigan, Paper No. SWR-83-301, 1983.
Erie, L. J.: Management: Okey to Irrigation Efficiency. Journal of Irrigation and Drainage Division ASCE 285–293 (1968)
Hanson, R. E.; Meyer, W. R.: Irrigation Requirements Estimates For Kansas, Kansas, State College Bulletin 37, 7 (June 15, 1953)
Hu-Chang, Jen: Climate and Agriculture, An Ecological Survey. Aldine Publishing Company, Chicago 1968.
Jensen, M. E. (ed.), Consumptive Use of Water and Irrigation Water Requirement. American Society of Civil Engineers, 1973.
Leichtweiss Institute Research Team: Agrometeorology of the Al-Hassa Oasis (1969–1976) Publication No. 26, Hofuf Agricultural Research Center, 1978.
Leichtweiss Institute Research Team: Problems Related to the Estimation of Consumptive Use under Extremly Arid Conditions, Publication No. 14, Hofuf Agricultural Research Center, 1976.
Tanner, C. B.: Measurement, of Evapotranspiration. Irrigation of Agriculatural Lands. In: Hagan, R.M.; Haise, H. R.; Edminster, T. W.; Dinuar, R. C. (eds.) American Society of Agronomy, pp. 534–555 Madison 1967
United States Department of Agriculture: Irrigation Water Requirements, Technical Release No. 21, 1967.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Al-Taher, Ahmed, A. Estimation of potential evapotranspiration in Al-Hassa oasis, Saudi Arabia. GeoJournal 26, 371–379 (1992). https://doi.org/10.1007/BF02629817
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02629817