Identification and analyzing of the widespread low extreme temperatures in north west region of Iran, by using NTD method

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AHMADI M.; GHAVIDEL RAHIMI Y.

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Journal: Researches in Earth Sciences Year:2011 | Volume:2 | Issue:6 Page(s): 92-77

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Title

Identification and analyzing of the widespread low extreme temperatures in north west region of Iran, by using NTD method

Author(s)

AHMADI M. | GHAVIDEL RAHIMI Y. | Issue Writer Certificate

Keywords

Low extreme temperatureQ2

Normalized of Temperature Deviations (NTD) indexQ2

North west region of IranQ2

Abstract

Extreme temperatures have been analyzed using the daily minimum temperature data from four meteorological synoptic stations including Tabriz, Orumieh, Ardabil and Zanjan, which have long term data and statistics and also the index of north west Iran. In order to identify and analyze the extreme temperatures of the north west region of the Iran, a kind of index called Normalized Temperature Deviations (NTD) is applied, where the NTD has been already introduced by Japanese meteorologist. Using the NTD and considering the intensity of the occurrence and the extent or the comprehensiveness, the 80 days of comprehensive extreme temperature have been identified in the study region. Results obtained by using the NTD index approach which is applied in this research for identification and analyzing of the extreme temperatures and in studies done by using the NTD approach, show that the NTD is a fine procedure for distinguishing, separating and analyzing the daily extreme temperatures of the climate of study region. Considering the idea that the NDT index calculates the daily temperatures changes in each day of a year based on the temperature average deviation of the day in the long term average of that day, one of the most significant advantages of the NDT approach is its usage in the synoptic studies and the selection of days for study.

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APA: Copy

AHMADI, M., & GHAVIDEL RAHIMI, Y.. (2011). Identification and analyzing of the widespread low extreme temperatures in north west region of Iran, by using NTD method. RESEARCHES IN EARTH SCIENCES, 2(6 ), 92-77. SID. https://sid.ir/paper/363613/en

Vancouver: Copy

AHMADI M., GHAVIDEL RAHIMI Y.. Identification and analyzing of the widespread low extreme temperatures in north west region of Iran, by using NTD method. RESEARCHES IN EARTH SCIENCES[Internet]. 2011;2(6 ):92-77. Available from: https://sid.ir/paper/363613/en

IEEE: Copy

M. AHMADI, and Y. GHAVIDEL RAHIMI, “Identification and analyzing of the widespread low extreme temperatures in north west region of Iran, by using NTD method,” RESEARCHES IN EARTH SCIENCES, vol. 2, no. 6 , pp. 92–77, 2011, [Online]. Available: https://sid.ir/paper/363613/en

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