Projection and Spatial Analysis of Agroclimatic Indices in Ghezel Ozan River Basin during the Growing Season

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Sadeqi Amin; DINPASHOH YAGOB; ZARGHAMI MAHDI

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Journal: JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION Year:2019 | Volume:9 | Issue:1 Page(s): 139-162

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Title

Projection and Spatial Analysis of Agroclimatic Indices in Ghezel Ozan River Basin during the Growing Season

Author(s)

Sadeqi Amin | DINPASHOH YAGOB | ZARGHAMI MAHDI | Issue Writer Certificate

Keywords

Artificial IntelligenceQ2

Climate ChangeQ1

EvapotranspirationQ1

Gezel OzanQ1

Spatial AnalysisQ1

Abstract

Accurate planning for adaptation to Climate Change is very important in each region. In this study, using the meteorological data of the six synoptic stations in the Ghezel Ozan basin in the period 1989-2016, and by employing the four GCM models, under the two scenarios RCP4. 5 and RCP8. 5, data were generated for the horizons 2050. Then, some parameters such as the air temperature, precipitation, potential Evapotranspiration (ET0), precipitation deficit (PD) during the growing season, dryness intensity were calculated. ET0 was calculated by Pristeley-Taylor (PT) and Penman-Monteith (PM) methods. Then, ET0 obtained from the PT method was calibrated using four Artificial Intelligence methods (namely Eureqa Formulize, ANN, ANFIS and SVM) with PM method for each station. For Spatial Analysis, three geostatistical methods namely IDW, Kriging, and Cokriging were utilized. The results indicated an increase of 0. 9-2 º C in mean air temperature and an increase in precipitation between 27 and 49 mm will be experienced in the future period. Furthermore, ET0 and dryness intensity will be increased at all the stations. The increase in average PD (in the whole basin) will be about 6% to 9%. In average, the rate of increase in agroclimatic indices in the RCP8. 5 scenario will be about four percent more than the RCP4. 5 scenario. Among the methods of interpolation, the modified Cokriging based on DEM (Digital Elevation Model) showed the more suitable one among others. The length of the growing season will be elongated from 15 to 35 days. No significant changes will be occurred for dryness period. The spatial variation of future climate variables is expected to be not changed comparing the base period.

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APA: Copy

Sadeqi, Amin, DINPASHOH, YAGOB, & ZARGHAMI, MAHDI. (2019). Projection and Spatial Analysis of Agroclimatic Indices in Ghezel Ozan River Basin during the Growing Season. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, 9(1 ), 139-162. SID. https://sid.ir/paper/232268/en

Vancouver: Copy

Sadeqi Amin, DINPASHOH YAGOB, ZARGHAMI MAHDI. Projection and Spatial Analysis of Agroclimatic Indices in Ghezel Ozan River Basin during the Growing Season. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION[Internet]. 2019;9(1 ):139-162. Available from: https://sid.ir/paper/232268/en

IEEE: Copy

Amin Sadeqi, YAGOB DINPASHOH, and MAHDI ZARGHAMI, “Projection and Spatial Analysis of Agroclimatic Indices in Ghezel Ozan River Basin during the Growing Season,” JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, vol. 9, no. 1 , pp. 139–162, 2019, [Online]. Available: https://sid.ir/paper/232268/en

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