THE EFFECT OF NATIONAL EVENTS AND HOLIDAYS ON AMBIENT PM2. 5 CONCENTRATIONS

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NABIZADEH NODEHI RAMIN; HASHEMI SEYED YASER; Azimi Faramarz

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Journal Paper

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Journal: Journal of Air Pollution and Health Year:2018 | Volume:3 | Issue:2 Page(s): 109-118

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Title

THE EFFECT OF NATIONAL EVENTS AND HOLIDAYS ON AMBIENT PM2. 5 CONCENTRATIONS

Author(s)

NABIZADEH NODEHI RAMIN | HASHEMI SEYED YASER | Azimi Faramarz | Issue Writer Certificate

Keywords

Norooz

PM2.5

holidays

Tehran

Abstract

Introduction: The aim of this study was to evaluate the effect of national events and holidays on PM2. 5 concentrations in Tehran megacity. Materials and methods: Air quality data were collected from Tehran Air Quality Control Company (TAQCC) over a period of four years, 2012 – 2015, then data from 10 air quality monitoring stations were processed using R-3. 3. 3. The Iranian New year, Ashura and Eid al-Fitr were the national events that considered to study. To compare the daily mean PM2. 5 concentrations in Norooz holidays and other days of spring, the Mann-Whitney test and difference in PM2. 5 concentrations in each season were investigated with Kruskal-Wallis test. Results: In Norooz holidays, the daily mean PM2. 5 concentrations in comparison with other spring days were decreased significantly (Pvalue < 0. 001). The same decreasing occurred for 10 fi rst days of Muharram too (Pvalue < 0. 01) but the daily PM2. 5 concentrations during Ramadan days were signifi cantly higher than that of summer days (Pvalue < 0. 001). Based on Kruskal-Wallis test the difference in PM2. 5 concentrations between seasons was signifi cant and only between summer-autumn (Pvalue > 0. 05) and winter-summer (Pvalue > 0. 05) was not. Conclusions: The effect of holidays on PM2. 5 concentration was not observed in summer, however it was an effect in autumn. In addition the concentration of PM2. 5 was not influenced by holidays in winter regarding the thermal inversion and stability of air.

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APA: Copy

NABIZADEH NODEHI, RAMIN, HASHEMI, SEYED YASER, & Azimi, Faramarz. (2018). THE EFFECT OF NATIONAL EVENTS AND HOLIDAYS ON AMBIENT PM2. 5 CONCENTRATIONS. JOURNAL OF AIR POLLUTION AND HEALTH, 3(2), 109-118. SID. https://sid.ir/paper/763688/en

Vancouver: Copy

NABIZADEH NODEHI RAMIN, HASHEMI SEYED YASER, Azimi Faramarz. THE EFFECT OF NATIONAL EVENTS AND HOLIDAYS ON AMBIENT PM2. 5 CONCENTRATIONS. JOURNAL OF AIR POLLUTION AND HEALTH[Internet]. 2018;3(2):109-118. Available from: https://sid.ir/paper/763688/en

IEEE: Copy

RAMIN NABIZADEH NODEHI, SEYED YASER HASHEMI, and Faramarz Azimi, “THE EFFECT OF NATIONAL EVENTS AND HOLIDAYS ON AMBIENT PM2. 5 CONCENTRATIONS,” JOURNAL OF AIR POLLUTION AND HEALTH, vol. 3, no. 2, pp. 109–118, 2018, [Online]. Available: https://sid.ir/paper/763688/en

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