Abstract
The main environmental risk factor that need regular monitoring and analysis for efficient air quality management is particulate matter (PM). This paper analyzes the effect of gaseous air pollutants (SO2, CO, Ozone, NOx) on PM concentration in the coastal city of Thiruvananthapuram, India using Wavelet coherence (WTC). The study was conducted using the data from Plammoodu station of the city for the period of 2018 to 2021. The teleconnections of air pollutants with PMs are analysed using WTC for the data of different time spells of 2018-2021, 2018 and 2020. Results showed that among the air pollutants, Ozone (AWC of 0.4713 & PoSC of 23.0234 for PM10, AWC of 0.4814 & PoSC of 26.2261 for PM2.5) have most dominant influence on irrespective of the particulate matter type and time spells. The secondary influencing factors were found to be different with respect to the time spells chosen, indicating the dynamics of local variables on PM concentrations of the city.
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