M. Al-Jaloudy, “Jordan Profile, the Food and Agriculture Organization (FAO),” 2001. http://www.fao.org/ag/AGP/agpc/doc/Counprof/Jordan/Jordan.htm
 G. A. Meehl, et al. “An Introduction to Trends in Ex- treme Weather and Climate Events: Observations, Socio- economic Impacts, Terrestrial Ecological Impacts, and Model Projections”, Bulletin of the American Meteoro- logical Society, Vol. 81, No. 3, 2000, pp. 413-416. doi:10.1175/1520-0477(2000)081<0413:AITTIE>2.3.CO;2
 A. M. Jo¨nsson, M. L. Linderson, I. Stjernquist, P. Schlyter and L. Ba¨rring, “Will Climate Change Increase the Frequency of Temperature Backlashes Causing Frost Damage in Swedish Forests?” Geophysical Research Ab- stracts, EGS-AGU-EUG Joint Assembly, Nice, Vol. 5, 6-11 April 2003, No. 01010, 2003.
 L. Gu, P. J. Hanson, W. M. Post, D. P. Kaiser and B. Yang, “The 2007 Eastern US Spring Freeze: Increased Cold Damage in a Warming World,” BioScience, Vol. 58, No. 3, 2008, pp. 253-262. doi:10.1641/B580311
 J. C. Loftis, R.C. Ward, R. D. Phillips and C. Tayler, “An Evaluation of Trend Detection Techniques for Use in Water Quality Monitoring Programs,” U.S. Environmental Protection Agency, Office of Acid Deposition En- vironmental Monitoring and Quality Assurance, Wa- shington, D.C., EPA/600/3-89/037, 1989.
 R. M. Hirsch, R. B. Alexander and R. A. Smith, “Selec- tion of Methods for the Detection and Estimation of Trends in Water Quality,” Water Resources Research, Vol. 27, No. 5, 1991, pp. 803-813. doi:10.1029/91WR00259
 D. R. Helsel and R. M. Hirsch, “Discussion of Applica- bility of the T-Test for Detecting Trends in Water Quality Variables,” In: R. H. Montgomery and J. C. Loftis, Eds., Water Resources Bulletin, Vol. 24, No. 1, pp. 201-204, 1988.
 S. Yue, P. J. Pilon and B. Phinney, “Canadian Streamflow Trend Detection: Impacts of Serial and Cross Correlation,” Hydrological Science Journal, Vol. 48, No. 1, pp. 51-64. doi:10.1623/hysj.18.104.22.168478
 M. R. Hamdi, M. Abu-Allaban, A. Elshaieb, M. Jaber and N. M. Momani, “Climate Change in Jordan: A Compre- hensive Examination Approach,” American Journal of Environmental Sciences, Vol. 5, No. 1, 2009, pp. 58-68. doi;10.3844/ajessp.2009.58.68
 Earth System Research Laboratory, “ESRL Physical Sci- ences Division Programs,” 2011. http://www.esrl.noaa.gov/psd/programs/
 U. Dayan, B. Ziv, T. Shoob and Y. Enzel, “Suspended Dust over Southeastern Mediterranean and Its Relation to Atmospheric Circulations,” International Journal of Cli- matology, Vol. 28, No. 7, 2008, pp. 915-924. doi:10.1002/joc.1587
 IPCC Fourth Assessment, Science, Intergovernmental Panel on Climate Change, “Climate Change 2007: The Physical Science Basis,” Contribution of Working Group I to the Fourth Assessment Report of the IPCC, Cambridge University Press, New York, 2007. http://ipcc-wg1.ucar.edu/wg1/wg1-report.html.