Climate Change Phenomenon Effect on the Hamadan Climate Parameters

Subject Areas : environmental management

Mohammadtaghi  Asadi ¹ (Graduate M.S.c in Water Engineering, Faculty of Agriculture, University of Bu-Ali Sina, Hamadan)
Hamid  Zareabyaneh ² (Professor, Department of Water Engineering, Faculty of Agriculture, University of Bu-Ali Sina, Hamadan *(Corresponding Author))
Nasrin  Delavar ³ (Graduate M.S.c in Water Engineering, Faculty of Agriculture, University of Bu-Ali Sina, Hamadan)
Azar  Asadi ⁴ (Graduate M.S.c in Water Engineering, Faculty of Agricultureand Natural Resource, University of Razi, Kermanshah)

Received: 2016-10-08 Accepted : 2017-01-18 Published : 2019-11-22

Keywords: Hamadan, LARS-WG, General Circulation Models, Climate Change, Downscaling,

Abstract :

Background and Objective: Process of climate change, particularly changes in temperature and precipitation; have raised the most discussion in the realm of environmental science. Human systems that are dependent on climatic elements such as agriculture and industry were designed based on stable climate. Method: In this study the output of general circulation models (GFCM21, HADCM3, INCM3, IPCM4 and NCCCSM) was used to simulate the climate parameters (minimum temperature, maximum temperature, precipitation and sunshine hours) in Hamadan station during 2046-2065. Three scenarios A1B, A2 and B1 were considered. Monthly changes of climate parameters were calculated by LARS-WG model. Findings: The results showed that the most increasing in minimum temperature were seen under A1B scenario of GFCM21 model (2.5˚C). The least increasing was related to INCM3 under B1 scenario (1˚C). The highest and lowest increasing in maximum temperature were seen in GFCM21 model under A1B and B1 scenarios by 2.4 and 1.4˚C, respectively. B1 scenario of IPCM4 model showed the highest increase in precipitation by 15.8 percent and A1B scenario of GFCM21 model reported the highest decrease by 13 percent. Solar radiation project by HADCM3 model, A1B scenario showed the most increase about 24 percent and based on NCCCSMmodel, A2 scenario lowest increase (by 13 percent) was seen. Discussion and Conclusion: The results of this study indicated minimum and maximum temperatures will increase in period of 2046-2065. Both increases and decreases in precipitation were seen. Also variations sun hour is very little.

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