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Minimum, maximum, and mean annual temperatures, relative humidity, and precipitation trends in arid and semi-arid regions of Iran

الحد الأدنى والحد الأقصى ومتوسط درجة الحرارة السنوية ، والرطوبة النسبية والاتجاهات هطول الأمطار في المناطق القاحلة وشبه القاحلة من ايران

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Abstract

One of the most important scientific concerns of the last few decades is climate change, which is the result of a great many factors like global warming. Although a number of studies have been dedicated to understand the phenomenon of climate change, more attention is required to understand the potential effects of global warming on the ecosystems as well as on human life. The present study was designed to survey the trends of minimum, maximum and mean temperatures, relative humidity, and the time series of annual precipitation and 10-year moving average low-pass filter in the 13 synoptic weather stations of Iran’s arid and semi-arid regions during the last 55 years by using τ Kendall test. The analyses indicate a significantly increasing trend for the minimum and mean temperatures while a decreasing trend for the mean relative humidity in the arid and semi-arid regions, especially during the last few years up to the year 2000. Any clear increasing or decreasing trend was not found for the maximum temperature, while the precipitation did not show any increasing/decreasing trend for most of the surveyed stations. Further studies, with long-term programming, are recommended to be carried out to evaluate the climate change and its effects on such regions.

Abstract

واحدة من أهم اهتمامات العلمية خلال العقود القليلة الماضية هو تغير المناخ ، والذي هو نتيجة لعوامل كثيرة عظيمة مثل الاحترار العالمي. على الرغم من أن عددا من الدراسات قد كرس لفهم ظاهرة تغير المناخ ، ولكن المطلوب هو المزيد من الاهتمام لفهم الآثار المحتملة لارتفاع درجة حرارة الأرض على النظم البيئية ، فضلا عن حياة الإنسان. لذلك ، تم تصميم هذه الدراسة لدراسة الاتجاهات في درجة الحرارة الدنيا والقصوى ، ويعني ، والرطوبة النسبية وسلسلة زمنية من الأمطار السنوية باستخدام τ كندال اختبار و 10 عاما متوسط متحرك مرشح تمرير منخفض في الطقس 13 - الاجمالية للمحطات وايران القاحلة وشبه القاحلة خلال الخمس والخمسين الماضية. التحليلات تشير إلى اتجاه متزايد بشكل كبير لدرجة الحرارة الدنيا ويعني ، في حين أن الاتجاه الهبوطي لمتوسط الرطوبة النسبية في المناطق القاحلة وشبه القاحلة ، وخاصة ، خلال السنوات القليلة الماضية ، وحتى عام 2000. وهناك زيادة أو نقصان واضح الاتجاه لم يتم العثور على أقصى درجة حرارة. في حين ، وتساقط الأمطار لم تظهر أي زيادة / تناقص الاتجاه لمعظم المحطات التي شملها الاستطلاع. مزيد من الدراسات ، مع وضع برامج طويلة الأجل ، ويوصى التي يتعين الاضطلاع بها لتقييم تغير المناخ وآثاره على هذه المناطق.

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References

  • Abahussain AA, Abdu AS, Al-Zubari WK, El-Deen NA, Raheen MA (2002) Desertification in the Arab region: analysis of current status and trends. J Arid Environ 51:521–545

    Article  Google Scholar 

  • Brutsaert W, Parlange MB (1998) Hydrologic cycle explains the evaporation paradox. Nature 30:396–403

    Google Scholar 

  • Elagib NA, Abdu SA (1997) Climate variability and aridity in Bahrain. J Arid Environ 36:405–419

    Article  Google Scholar 

  • Evans J, Geerken R (2004) Discrimination between climate and human-induced dryland degradation. J Arid Environ 57:535–554

    Article  Google Scholar 

  • Georgios AF, Christodoulides P (2008) Global warming and carbon dioxide through sciences. Environment International 35: 390–401

    Google Scholar 

  • Kendall MG, Stuart A (1973) The Advanced Theory by Statistics. Griffin, London

  • Kiely G (1999) Climate change in Ireland from precipitation and stream flow observations. Adv Water Resour 23:141–151

    Article  Google Scholar 

  • Modarres R, Silva V (2007) Rainfall trends in arid and semi-arid regions of Iran. J Arid Environ 70:344–355

    Article  Google Scholar 

  • Ngongondo CS (2006) An analysis of long-term rainfall variability, trends and groundwater availability in the Mulunguzi river catchment area, Zomba mountain, Southern Malawi. Quaternary International 148: 45–50

    Google Scholar 

  • Oliver HR, Oliver SA (1994) The role of water and the hydrological cycle in global change. NATO ASI Series I. Global Environ Change 31:111–112

    Google Scholar 

  • Ragab R, Prudhomme C (2002) Climate change and water resources management in arid and semi-arid regions: prospective and challenges for the 21st century. Biosys Eng 81:3–34

    Article  Google Scholar 

  • Sadeghi AR, Kamgar-Haghighi AA, Sepaskahah AR, Khalili D, Zand-Parsa S (2002) Regional classification for dryland agriculture in southern Iran. J Arid Environ 50:333–341

    Article  Google Scholar 

  • Shi YF, Shen YP, Li DL (2003) Discussion on the present climate change from warm-dry to warm-wet in northwest China. Quaternary Sci 23:152–164

    Google Scholar 

  • Valdez-Cepeda RD, Hernández-Ramírez D, Mendoza B, Valdés-Galicia J, Maravilla D (2003) Fractality of monthly extreme minimum temperature. Fractals 11:137–144

    Article  Google Scholar 

  • Wang HL, Gan YT, Wang RY, Niu JY, Zhao H, Yang QG, Li GC (2008) Phonological trends in winter wheat and spring cotton in response to climate changes in northwest China. Agri Forest Meteorol 148:1242–1251

    Article  Google Scholar 

  • Wang SR, Zheng SH, Cheng L (2003) Studies on impacts of climate change on water cycle and water resources in northwest China. Clim Environ Res 8:44–51

    Google Scholar 

  • Zhao ZC, Ding YH, Xu Y, Zhang J (2003) Detection and prediction of climate change for the 20th and 21st century due to human activity in northwest China. Clim Environ Res 8:27–34

    Google Scholar 

  • Zhenmei M, Kang S, Zhang L, Tong L, Xiaoling S (2008) Analysis of impacts of climate variability and human activity on stream flow for a river basin in arid region of northwest China. J Hydrol 352:239–249

    Google Scholar 

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Acknowledgment

The authors gratefully acknowledge the Iranian Meteorological Organization for providing the data used in this study.

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Correspondence to Mohammad Reza Kousari.

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Kousari, M.R., Asadi Zarch, M.A. Minimum, maximum, and mean annual temperatures, relative humidity, and precipitation trends in arid and semi-arid regions of Iran. Arab J Geosci 4, 907–914 (2011). https://doi.org/10.1007/s12517-009-0113-6

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  • DOI: https://doi.org/10.1007/s12517-009-0113-6

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