Efficiency of Some Meteorological Drought Indices in Different Time Scales (Case Study: Tajan Basin, Iran)

Somayeh Mashari Eshghabad; Ebrahim Omidvar; Karim Solaimani

Efficiency of Some Meteorological Drought Indices in Different Time Scales (Case Study: Tajan Basin, Iran)

Publish place: Ecopersia، Vol: 2، Issue: 1

Publish Year: 1392

Type: Journal paper

Language: English

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https://civilica.com/doc/2138437

Document National Code:

JR_ECOPER-2-1_003

Index date: 22 December 2024

Efficiency of Some Meteorological Drought Indices in Different Time Scales (Case Study: Tajan Basin, Iran) abstract

Drought is a climatic phenomenon that causes much detrimental influence on ecological environments. This research investigates the performance of meteorological drought indices in different time scales in theTajan basin in Iran. Indices undergone in this study include: Percent Normal Precipitation Index (PNPI), Z-Score Index (ZSI), Standard Precipitation Index (SPI), China Z Index (CZI), Modified CZI (MZCI), and Decile Precipitation Index (DPI). In this study, we used data of annual and monthly precipitation from meteorological stations in the basin. Drought indices were determined at time scales of 1, 3, 6, 9, 12, 18, 24 year of minimum precipitation with very intense drought and the method of correlation coefficients between drought indices values and monthly precipitation. The results showed that DPI was the best index at annual time scale, while at the time scale of 1,6,12 and 24-months, PNPI was the best index. MCZI was the best index for time scales of 9 and 48-months, and the ZCI had the maximum efficiency for a three-month scale.

Efficiency of Some Meteorological Drought Indices in Different Time Scales (Case Study: Tajan Basin, Iran) Keywords:

Drought , Drought indices , Precipitation data , Tajan basin

Efficiency of Some Meteorological Drought Indices in Different Time Scales (Case Study: Tajan Basin, Iran) authors

Somayeh Mashari Eshghabad

Faculty of Agriculture and Natural Resources, Hormozgan University, Bandar Abbas, Iran

Ebrahim Omidvar

Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran

Karim Solaimani

Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari, Iran

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