SPRING EXTREME PRECIPITATION IN THE PROVINCE OF WEST AZARBAIJAN (2003-2008)

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RANJBAR SAADATABADI ABBAS; TOHIDI SARDASHT AZAD

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Journal: Journal of Geography and Regional Development Year:2014 | Volume:12 | Issue:22 Page(s): 151-169

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Title

SPRING EXTREME PRECIPITATION IN THE PROVINCE OF WEST AZARBAIJAN (2003-2008)

Author(s)

RANJBAR SAADATABADI ABBAS | TOHIDI SARDASHT AZAD | Issue Writer Certificate

Keywords

WEATHER PATTERNSQ2

HEAVY RAINFALLSQ2

RELATIVE VORTICITYQ2

WEST AZERBAIJANQ2

Abstract

Objectives: The main goal of this study is to identify sources of formation and characteristics of pressure patterns, and meteorological quantities that affect HEAVY RAINFALLS in spring in the WEST AZERBAIJAN province.Method: According to maps and meteorological data in different levels of atmosphere, WEATHER PATTERNS leading to heavy precipitations in spring were investigated in six years (2003-2008) in WEST AZERBAIJAN province. For this purpose, meteorological data, weather charts at standard pressure levels, total precipitation and gridded sea level pressure (SLP), 500-hPa geopotential height fields and their anomalies data were used. In addition, RELATIVE VORTICITY and its advection were computed at 500-hPa level for rainfall episodes.Findings/Results: The results indicate that all types of events are controlled by the strong cut of low-pressure systems that are located in east of Mediterranean Sea and remain stagnant for 3-7 days in this area.Conclusion: In all studied cases,, RELATIVE VORTICITY and its advection on midtroposphere ( 500-hPa) level reveal a significant increase in the days before the heavy rainfall period with the maximum vorticity reaching 4×10-5s-1 to 6×10-5s-1 and maximum advection reaching 6×10-9s-2 to 12×10-9s-2). One day before the start of HEAVY RAINFALLS, vorticity and its advection reached their maximum values.As such, it can be used as a predictor of intense rainfall episodes in spring.

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APA: Copy

RANJBAR SAADATABADI, ABBAS, & TOHIDI SARDASHT, AZAD. (2014). SPRING EXTREME PRECIPITATION IN THE PROVINCE OF WEST AZARBAIJAN (2003-2008). JOURNAL OF GEOGRAPHY AND REGIONAL DEVELOPMENT, 12(22), 151-169. SID. https://sid.ir/paper/98976/en

Vancouver: Copy

RANJBAR SAADATABADI ABBAS, TOHIDI SARDASHT AZAD. SPRING EXTREME PRECIPITATION IN THE PROVINCE OF WEST AZARBAIJAN (2003-2008). JOURNAL OF GEOGRAPHY AND REGIONAL DEVELOPMENT[Internet]. 2014;12(22):151-169. Available from: https://sid.ir/paper/98976/en

IEEE: Copy

ABBAS RANJBAR SAADATABADI, and AZAD TOHIDI SARDASHT, “SPRING EXTREME PRECIPITATION IN THE PROVINCE OF WEST AZARBAIJAN (2003-2008),” JOURNAL OF GEOGRAPHY AND REGIONAL DEVELOPMENT, vol. 12, no. 22, pp. 151–169, 2014, [Online]. Available: https://sid.ir/paper/98976/en

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