A METHOD FOR CLIMATIC CLASSIFICATION ON SELIANINOV SYSTEM IN GIS MEDIA (A CASE STUDY FOR NORTH WEST OF IRAN)

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KHALILI A.; DARWISH SEFAT A.; BARADARAN-E-RADE R.; BAZRAFSHAN JAVAD

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Journal: Desert Year:2004 | Volume:9 | Issue:2 Page(s): 227-237

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Title

A METHOD FOR CLIMATIC CLASSIFICATION ON SELIANINOV SYSTEM IN GIS MEDIA (A CASE STUDY FOR NORTH WEST OF IRAN)

Author(s)

KHALILI A. | DARWISH SEFAT A. | BARADARAN-E-RADE R. | BAZRAFSHAN JAVAD | Issue Writer Certificate

Keywords

CLIMATIC CLASSIFICATIONQ4

CLIMATIC ZONINGQ2

SELIANINOVQ3

GISQ2

AZARBAIJANQ4

IRANQ4

Abstract

Application of GIS and Geo-statistical methods has provided a great facility and a high accuracy for climatic mapping. These methods generally take into account all values of climatic parameters used for classifications. This paper proposes to divide each climatical parameter into two components:1- rational or algebric component which is calculated by correlation methods: 2- stochastic or error component:and to apply the geo-statistical methods in GIS media for the second component, only.This study is based on mean monthly precipitation and temperature over 30 year-period, for 73 meteorological stations spread over AZARBAIJAN Province at the North West of IRAN. The basic formula in SELIANINOV classification is the hydro-thermique coefficient k=10.P/S, where P is the annual precipitation (mm) and S is the sum of heat units with 10 degrees Celsius threshold (degree-days). The following steps were undertaken for climatological zonning of the region:- Generating daily temperature from monthly values by developing a model which estimates annual heat units, S, for each station. - Performing linear regression analysis to obtain regression equations: (P=a1+ b1.Z+e1 = Pc+e1 and S=a2+b2.Z+e2 =Sc+e2) :where Z is altitude (m) and el and e2 are the errors of estimates. These equations are significant at 1% - Constructing a digital elevation model (DEM) in UTM projection system with a grid size of 500 x 500 meters in IDRISI environment. - Compiling six layers of maps for Pc, e1 Sc, e2 and consequently for P= Pc+ el and S= Sc+ e2 based an grid points. - Creating a climatologicallayer of k=10.P/S, using the above mentioned P and Slayers in IDRISI media, which gives the climatological zonning map of the region.The paper depicts the advantage of compiling error maps e1 and e2 instead of direct mapping of P and S, which reduces the interpolations errors considerably. The greater the correlation coefficient, the less the interpolation errors. The climatic map shows that the climate of AZARBAIJAN ranges from semi-arid to highland cold-humid. The areas of each climatic region are given as well.

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بررسی روشهای مختلف میانیابی در تخمین داده های بارندگی ماهیانه در ناحیه مرکزی ایران

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APA: Copy

KHALILI, A., DARWISH SEFAT, A., BARADARAN-E-RADE, R., & BAZRAFSHAN, JAVAD. (2004). A METHOD FOR CLIMATIC CLASSIFICATION ON SELIANINOV SYSTEM IN GIS MEDIA (A CASE STUDY FOR NORTH WEST OF IRAN). DESERT (BIABAN), 9(2), 227-237. SID. https://sid.ir/paper/5368/en

Vancouver: Copy

KHALILI A., DARWISH SEFAT A., BARADARAN-E-RADE R., BAZRAFSHAN JAVAD. A METHOD FOR CLIMATIC CLASSIFICATION ON SELIANINOV SYSTEM IN GIS MEDIA (A CASE STUDY FOR NORTH WEST OF IRAN). DESERT (BIABAN)[Internet]. 2004;9(2):227-237. Available from: https://sid.ir/paper/5368/en

IEEE: Copy

A. KHALILI, A. DARWISH SEFAT, R. BARADARAN-E-RADE, and JAVAD BAZRAFSHAN, “A METHOD FOR CLIMATIC CLASSIFICATION ON SELIANINOV SYSTEM IN GIS MEDIA (A CASE STUDY FOR NORTH WEST OF IRAN),” DESERT (BIABAN), vol. 9, no. 2, pp. 227–237, 2004, [Online]. Available: https://sid.ir/paper/5368/en

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