Relationship of Drought and Teleconnection Patterns; Case Study of Qara-Qom Basin

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FALLAHZADEH M.; REZAEI P.; ESLAMIAN S.S.; ABBASI A.R.

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Journal: GEOGRAPHICAL RESEARCH Year:2019 | Volume:34 | Issue:2 (132) Page(s): 153-164

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Information Journal Paper

Title

Relationship of Drought and Teleconnection Patterns; Case Study of Qara-Qom Basin

Author(s)

FALLAHZADEH M. | REZAEI P. | ESLAMIAN S.S. | ABBASI A.R. | Issue Writer Certificate

Keywords

Standardized Precipitation Index (SPI)Q1

TeleconnectionQ1

Factor AnalysisQ2

CorrelationQ1

Qara Qom BasinQ1

Abstract

Aims & Backgrounds Drought is a natural feature of an area and its occurrence in each region can lead to economic, social and environmental losses. The aim of the present study was to investigate the relationship between the Teleconnection patterns with drought in the Qara-Qom basin. Methodology The precipitation data of 30 rain gauge and synoptic stations and the data of 32 numerical indexes of Teleconnection from NOAA site were obtained during 1987-2013. The data of standardized precipitation index in the 9 to 48-month scale were classified by Factor Analysis and the stations with similar behavior were identified in the study area. Then, the relationship between the average drought index of each area with each of the Teleconnection patterns was evaluated simultaneously with a delay of 6 and 9 months through the Correlation statistical method. Findings The multivariate ENSO index, the decadal oscillation of Pacific ocean, southern oscillation, Nino 4, ¾ and 3 had the most significant Correlation with the standardized precipitation index scales. Also, there was a direct Correlation between the 6-month delayed drought index (With four factors of drought index) with Nino 4, 3/4 and 3, multivariate ENSO, Madden Julian oscillation in the regions of 20° , 70° , 80° , 100 ° east, and there was a significant inverse Correlation between the 6-month delayed drought index with the east pacific index, the southern and Madden Julian oscillations in the regions of 160° East, 120° and 40° West. Four factors of the 9-month delayed drought index (total basin stations) had a significant inverse Correlation with the east Pacific index, southern and Madden Julian oscillations in the regions of 120° and 40° West, and it had a significant direct relationship with the index of Nino 3, the multivariate ENSO and the oscillation of Madden Julian in the regions of 70° , 80° and 100° East. Conclusion There is a relationship between the Teleconnection patterns and droughts in Qara-Qom basin.

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APA: Copy

FALLAHZADEH, M., REZAEI, P., ESLAMIAN, S.S., & ABBASI, A.R.. (2019). Relationship of Drought and Teleconnection Patterns; Case Study of Qara-Qom Basin. GEOGRAPHICAL RESEARCH, 34(2 (132) ), 153-164. SID. https://sid.ir/paper/390416/en

Vancouver: Copy

FALLAHZADEH M., REZAEI P., ESLAMIAN S.S., ABBASI A.R.. Relationship of Drought and Teleconnection Patterns; Case Study of Qara-Qom Basin. GEOGRAPHICAL RESEARCH[Internet]. 2019;34(2 (132) ):153-164. Available from: https://sid.ir/paper/390416/en

IEEE: Copy

M. FALLAHZADEH, P. REZAEI, S.S. ESLAMIAN, and A.R. ABBASI, “Relationship of Drought and Teleconnection Patterns; Case Study of Qara-Qom Basin,” GEOGRAPHICAL RESEARCH, vol. 34, no. 2 (132) , pp. 153–164, 2019, [Online]. Available: https://sid.ir/paper/390416/en

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