THE RELATIONSHIP BETWEEN ENSO INDEX AND SEASONAL EXTREME RAINFALLS IN KHORASAN PROVINCES

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SHIRMOHAMMADI Z.; ANSARI H.; ALIZADEH A.; MOHAMMADIAN A.

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Paper Information

Journal: Journal of Water and Soil Conservation Year:2012 | Volume:19 | Issue:1 Page(s): 61-79

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Title

THE RELATIONSHIP BETWEEN ENSO INDEX AND SEASONAL EXTREME RAINFALLS IN KHORASAN PROVINCES

Author(s)

SHIRMOHAMMADI Z. | ANSARI H. | ALIZADEH A. | MOHAMMADIAN A. | Issue Writer Certificate

Keywords

EXTREME RAINFALLQ2

ENSOQ2

NINO 3.4 SSTQ2

KHORASANQ2

Abstract

Generally, Climatic extreme events, like the heavy rain falls and sudden changes cause the greatest range of damages to water resources, agriculture and even human daily life. Therefore, correct and regular monitoring reduces their negative effects. This study evaluates the effects of large-scale climate factors such as ENSO, on how occurrence and severity of seasonal precipitation changes in Southern and Razavi KHORASAN provinces. The data of 44-year period in four stations is used. Statistical analysis showed that extreme precipitations frequency and intensity has no long-term trend. The results of the correlation between Southern oscillation index and extreme precipitations pointed out high value with one month lag for spring and fall precipitation indices and with one year lag for winter precipitations. Also, a five-six months lag for unexpected rainfall events in winter season such as the number of rainfall more than 50 mm yielded the highest correlation.

Cites

TEMPORAL-SPATIAL ANALYSIS OF RAINFALL DAYS FREQUENCY TREND OF WESTERN IRAN REGIONS

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APA: Copy

SHIRMOHAMMADI, Z., ANSARI, H., ALIZADEH, A., & MOHAMMADIAN, A.. (2012). THE RELATIONSHIP BETWEEN ENSO INDEX AND SEASONAL EXTREME RAINFALLS IN KHORASAN PROVINCES. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 19(1), 61-79. SID. https://sid.ir/paper/156081/en

Vancouver: Copy

SHIRMOHAMMADI Z., ANSARI H., ALIZADEH A., MOHAMMADIAN A.. THE RELATIONSHIP BETWEEN ENSO INDEX AND SEASONAL EXTREME RAINFALLS IN KHORASAN PROVINCES. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2012;19(1):61-79. Available from: https://sid.ir/paper/156081/en

IEEE: Copy

Z. SHIRMOHAMMADI, H. ANSARI, A. ALIZADEH, and A. MOHAMMADIAN, “THE RELATIONSHIP BETWEEN ENSO INDEX AND SEASONAL EXTREME RAINFALLS IN KHORASAN PROVINCES,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 19, no. 1, pp. 61–79, 2012, [Online]. Available: https://sid.ir/paper/156081/en

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