Open AccessAssessment of Surface Ozone Concentration in Northern Peninsular Malaysia
Author(s) -
Nur Izzah Mohd Hashim,
Nur Alia Izzati Mohd Yusoff,
Norazian Mohamed Noor,
Ahmad Zia Ul-Saufie
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/551/1/012100
Subject(s) - ozone , morning , environmental science , wind speed , air quality index , atmospheric sciences , correlation coefficient , pollutant , daytime , air pollutants , meteorology , air pollution , chemistry , mathematics , geography , statistics , medicine , organic chemistry , geology
This study investigate the surface ozone variations in northern Peninsular Malaysia which is Penang and Ipoh. A database with hourly air quality data and meteorological parameters covering the period of 2013 – 2016 obtained from Air Quality Division, the Department of Environment (DOE) were analysed. The association between the O 3 concentration and meteorological parameter as well as the other air pollutants were identified by using Pearson Correlation Analysis and Principle Component Analysis. In order to predict the next three hour of O 3 concentration, two models were developed which is MLR and PCAMLR. The results indicate that Ipoh has higher ozone concentration with maximum concentration of 0.124 ppm. The diurnal pattern of ozone displayed a peak during afternoon and low concentration during night-time until morning. On the other hand, the NO and NO 2 concentration shows opposite pattern from ozone concentration. Maximum concentration of O 3 reached the peak at late afternoon at approximately 2 p.m. in Penang and Ipoh while the lowest reading was recorded was at 8 a.m. A significant correlation was observed between O 3 concentration with temperature and wind speed in both urban areas. MLR was chosen as best predictive and more accurate model in predicting O 3 concentration during the peak hour compared to PCA-MLR.