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The survey of climatic drought trend in Iran

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Abstract

Drought is one of the most important natural hazards in Iran. Therefore, drought monitoring has become a point of concern for most of the researchers. In the present study, the changes and trend of drought was surveyed, under the current global climate changes, by non parametric Mann–Kendall statistical test for 42 synoptic stations at different places of Iran. Standardized Precipitation Index (SPI) was calculated to recognize the drought condition at different time scales (3, 6, 9, 12, 18 and 24 months’ time series) for analyzing the drought trend in the recent 30 years. The obtained results have indicated a significant negative trend of drought in many parts of Iran, especially the South-East, West and South-West regions of the country. According to the results, although some parts of Iran such as North (around the Caspian Sea) and Northeast show no significant trend but in other parts of country, the severity of drought has increased during the last 30 years.

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Acknowledgment

The authors greatly acknowledge the financial support of Payame Noor University, Yazd, Iran for running the present project.

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Correspondence to Mohammad Amin Asadi Zarch.

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Bari Abarghouei, H., Asadi Zarch, M.A., Dastorani, M.T. et al. The survey of climatic drought trend in Iran. Stoch Environ Res Risk Assess 25, 851–863 (2011). https://doi.org/10.1007/s00477-011-0491-7

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