MITIGATING CLIMATE CHANGE THROUGH THE ANALYSIS OF TROPOSPHERIC OZONE CONCENTRATIONS
AIMI NURSYAHIRAH AHMAD (a*), SAMSURI ABDULLAH (a), AMALINA ABU MANSOR (b), MARZUKI ISMAIL (b),(c)

(a) Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Terengganu, Malaysia
(b) Institute of Tropical Biodiversity and Sustainable Development, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Malaysia
(c) Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Malaysia

Abstract

Ozone is formed in the air by the photochemical reaction of sunlight and nitrogen oxide (NOX), aided by a variety of volatile organic compounds (VOCs) that are photochemically reactive hydrocarbons. This study determines the trend of ozone concentration during daytime and night-time in Kuala Terengganu. Data from 2018 to 2020 on hourly basis including ozone (O3), temperature and solar radiation were used. O3 concentration reaches a peak during the middle of the day around 14:00 hours until 15:00 hours due to reaction of ozone precursors with the present of sunlight that might come from industrial activities and traffic carrying raw materials for the industrial production process. The O3 concentration was decreasing slowly towards evening starting at 16:00 hours and night time around 21:00 hours due to the absence of sunlight and redox reactions. In conclusion, O3 concentration reaches a peak during the middle of the day (14:00 hours until 15:00 hours) while there was starting slower O3 concentration during night time (20:00 hours) due to the photochemical reaction of O3 precursors.

Keywords: ozone- air quality- trend- pollutants

Topic: Natural Disaster Mitigation and Adaptation