EFFECT OF NORTH ATLANTIC OSCILLATION (NAO) ON RAINFALL VARIABILITY AND INCIDENCE OF WINTERTIME DRY AND WET PERIODS IN EAST AZERBAIJAN

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NIKJOU M.R.; GAVIDELEH RAHIMI Y.

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Journal: JOURNAL OF AGRICULTURAL KNOWLEDGE Year:2006 | Volume:16 | Issue:3 Page(s): 33-44

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Information Journal Paper

Title

EFFECT OF NORTH ATLANTIC OSCILLATION (NAO) ON RAINFALL VARIABILITY AND INCIDENCE OF WINTERTIME DRY AND WET PERIODS IN EAST AZERBAIJAN

Author(s)

NIKJOU M.R. | GAVIDELEH RAHIMI Y. | Issue Writer Certificate

Keywords

EAST AZERBAIJANQ3

NORTH ATLANTIC OSCILLATIONS (NAO)Q3

RAINFALL VARIABILITYQ3

WINTER DROUGHQ3

Abstract

The North Atlantic Oscillations (NAO) is the dominant pattern of atmospheric circulation variability in the extra tropical division of Northern Hemisphere and it is a major controlling factor of basic climatic elements such as temperature and precipitation, which have large socioeconomic impacts on energy, agriculture, industry, traffic and health divisions. In this study the data relating to NAO and winter precipitations were studied for EAST AZERBAIJAN Province in a time period of 43 years (1960-2002) aiming at the calculation of coefficient of correlation and determination of wet years and droughts. The main methodologies being used in this research were the regression (linear, power, exponential, logarithmic and polynomial), Pearson and Spearman correlation coefficients, and trend components for the analysis of the winter precipitation and NAO. Negative correlations (specially in intensive wet winter and WINTER DROUGHts) obtained between winter precipitation and NAO index in Tabriz, Jolfa, Ahar and Sarab stations. This is an indicative of the increase of precipitation and occurrence of wet periods during the negative NAO phases, and on the contrary, the precipitation reduction and occurrence of droughts during the positive NAO phases.

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References

ارزیابی کارآیی چندنمایه خشکسالی هواشناسی در نمونه های اقلیمی مختلف ایران

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APA: Copy

NIKJOU, M.R., & GAVIDELEH RAHIMI, Y.. (2006). EFFECT OF NORTH ATLANTIC OSCILLATION (NAO) ON RAINFALL VARIABILITY AND INCIDENCE OF WINTERTIME DRY AND WET PERIODS IN EAST AZERBAIJAN. JOURNAL OF AGRICULTURAL KNOWLEDGE, 16(3), 33-44. SID. https://sid.ir/paper/28825/en

Vancouver: Copy

NIKJOU M.R., GAVIDELEH RAHIMI Y.. EFFECT OF NORTH ATLANTIC OSCILLATION (NAO) ON RAINFALL VARIABILITY AND INCIDENCE OF WINTERTIME DRY AND WET PERIODS IN EAST AZERBAIJAN. JOURNAL OF AGRICULTURAL KNOWLEDGE[Internet]. 2006;16(3):33-44. Available from: https://sid.ir/paper/28825/en

IEEE: Copy

M.R. NIKJOU, and Y. GAVIDELEH RAHIMI, “EFFECT OF NORTH ATLANTIC OSCILLATION (NAO) ON RAINFALL VARIABILITY AND INCIDENCE OF WINTERTIME DRY AND WET PERIODS IN EAST AZERBAIJAN,” JOURNAL OF AGRICULTURAL KNOWLEDGE, vol. 16, no. 3, pp. 33–44, 2006, [Online]. Available: https://sid.ir/paper/28825/en

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