THE RELATIONSHIP BETWEEN THREE DROUGHT INDICES WITH A NUMBER OF CLIMATE PARAMETERS IN SEVERAL CLIMATIC ZONES OF IRAN (TECHNICAL NOTE)

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YOSEFI M.; ANSARI H.; MOSAEDI A.; SAMADI Z.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2017 | Volume:13 | Issue:3 Page(s): 194-197

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Title

THE RELATIONSHIP BETWEEN THREE DROUGHT INDICES WITH A NUMBER OF CLIMATE PARAMETERS IN SEVERAL CLIMATIC ZONES OF IRAN (TECHNICAL NOTE)

Author(s)

YOSEFI M. | ANSARI H. | MOSAEDI A. | SAMADI Z. | Issue Writer Certificate

Keywords

DROUGHTQ2

CORRELATIONQ3

RECONNAISSANCE DROUGHT INDEX (RDI)Q1

STANDARDIZED PRECIPITATION-EVAPOTRANSPIRATION INDEX (SPEI)Q1

IRANQ2

Abstract

In this study, DROUGHT monitoring in different areas of IRAN's climate are performed based on three DROUGHT indices of SPI, RDI and SPEI in stations Babolsar, Bandar Abbas, Sabzevar, Shiraz and Zahedan. The CORRELATION between the DROUGHT indices in 12-month scale with 12-month moving average of Precipitation, ETo and four meteorological parameters including minimum and maximum temperatures, wind speed and relative humidity were calculated. According to the results SPI index showed the highest CORRELATION with rainfall. Also significant CORRELATION were observed between SPEI index and ETo in different climatic station. ETo CORRELATION with SPEI index shows extremely high values in low rainfall and dry stations which increased as the precipitation to ETo ratio decreased. Meteorological parameters affecting ETo showed higher CORRELATIONs with these parameters compared to their CORRELATIONs with DROUGHT indices. The CORRELATION value of meteorological parameters affecting ETo with droght indices is directly affected by their CORRELATIONs with ETo. Due to high CORRELATION of ETo with DROUGHT conditions in most of the studied stations it is suggested that in arid and semi- arid area the SPEI index be used for DROUGHT monitoring. Using SPI index is not recommended in these areas in any way. However, in areas in which the ratio of precipitation to ETo is close to one, Using indices which are based on rainfall such as SPI can be a good representative of the region's DROUGHT status.

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APA: Copy

YOSEFI, M., ANSARI, H., MOSAEDI, A., & SAMADI, Z.. (2017). THE RELATIONSHIP BETWEEN THREE DROUGHT INDICES WITH A NUMBER OF CLIMATE PARAMETERS IN SEVERAL CLIMATIC ZONES OF IRAN (TECHNICAL NOTE). IRAN-WATER RESOURCES RESEARCH, 13(3 ), 194-197. SID. https://sid.ir/paper/100268/en

Vancouver: Copy

YOSEFI M., ANSARI H., MOSAEDI A., SAMADI Z.. THE RELATIONSHIP BETWEEN THREE DROUGHT INDICES WITH A NUMBER OF CLIMATE PARAMETERS IN SEVERAL CLIMATIC ZONES OF IRAN (TECHNICAL NOTE). IRAN-WATER RESOURCES RESEARCH[Internet]. 2017;13(3 ):194-197. Available from: https://sid.ir/paper/100268/en

IEEE: Copy

M. YOSEFI, H. ANSARI, A. MOSAEDI, and Z. SAMADI, “THE RELATIONSHIP BETWEEN THREE DROUGHT INDICES WITH A NUMBER OF CLIMATE PARAMETERS IN SEVERAL CLIMATIC ZONES OF IRAN (TECHNICAL NOTE),” IRAN-WATER RESOURCES RESEARCH, vol. 13, no. 3 , pp. 194–197, 2017, [Online]. Available: https://sid.ir/paper/100268/en

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