SPATIAL AND TEMPORAL ANALYSIS OF IRAN EXTREME COLD DAYS' TREND

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MASOODIAN S.A.; DARAND M.

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Journal: GEOGRAPHICAL RESEARCH Year:2012 | Volume:27 | Issue:2 (105) Page(s): 37-56

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Information Journal Paper

Title

SPATIAL AND TEMPORAL ANALYSIS OF IRAN EXTREME COLD DAYS' TREND

Author(s)

MASOODIAN S.A. | DARAND M. | Issue Writer Certificate

Keywords

SPATIAL AND TEMPORAL ANALYSISQ2

EXTREME COLD EVENTSQ2

IRANQ2

Abstract

In order to have SPATIAL AND TEMPORAL ANALYSIS of IRAN extreme cold days'' trend, the average of daily temperature data from 663 synoptic and climatologic stations of IRAN during the period of 1961/21/03 to 2004/19/03 were used. Then, temperature data on 15*15 kilometer pixels were interpolated using Kriging method for IRAN. The extreme cold days were identified by Normalized Temperature Difference (NTD) index. According to the index, the days with NTD£-2 were selected as extreme cold days. Then, a trend analysis was applied to the extreme cold days for each month of year. The results showed the negative trend extend of the extreme cold days is further than the positive trend extend. Positive trend located on the high mountains in Shahre Kord, Sannadaj, Zanjan to Ardabil and a thin band on Alborz mountains range. While a negative trend located on central-south of IRAN. In January and July extreme cold occurrence is more frequent and least respectively.

Cites

INTERACTION BETWEEN SCANDINAVIAN LOW PRESSURE WITH SIBERIAN- EUROPEAN AND NORTH WEST OF IRAN HIGH PRESSURE SYSTEMS (AGGREGATE HIGH PRESSURE SYSTEM) ASSOCIATED WITH FROST WAVE EVENT IN IRAN: 11 TO 16 DECEMBER 2003

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APA: Copy

MASOODIAN, S.A., & DARAND, M.. (2012). SPATIAL AND TEMPORAL ANALYSIS OF IRAN EXTREME COLD DAYS' TREND. GEOGRAPHICAL RESEARCH, 27(2 (105)), 37-56. SID. https://sid.ir/paper/30052/en

Vancouver: Copy

MASOODIAN S.A., DARAND M.. SPATIAL AND TEMPORAL ANALYSIS OF IRAN EXTREME COLD DAYS' TREND. GEOGRAPHICAL RESEARCH[Internet]. 2012;27(2 (105)):37-56. Available from: https://sid.ir/paper/30052/en

IEEE: Copy

S.A. MASOODIAN, and M. DARAND, “SPATIAL AND TEMPORAL ANALYSIS OF IRAN EXTREME COLD DAYS' TREND,” GEOGRAPHICAL RESEARCH, vol. 27, no. 2 (105), pp. 37–56, 2012, [Online]. Available: https://sid.ir/paper/30052/en

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