Mohd Talib LatifLim Shun HueyLiew Juneng2024-05-102024-05-102012Latif, M. T., Huey, L. S., & Juneng, L. (2012). Variations of surface ozone concentration across the Klang Valley, Malaysia. Atmospheric environment, 61, 434-445.https://repoemc.ukm.my/handle/123456789/471Hourly air quality data covering the period 2004-2008 was obtained from the Air Quality Division, the Department of Environment (DOE) through long-term monitoring by Alam Sekitar Sdn. Bhd. (ASMA) were analysed to investigate the variations of surface ozone (O3) in the Klang Valley, Malaysia. A total of nine monitoring stations were selected for analysis in this study and the results show that there are distinct seasonal patterns in the surface O3 across the Klang Valley. A high surface O3 concentration is usually observed between January and April, while a low surface O3 concentration is found between June and August.enOzone temporal variationSpatial variationPrecursorsHYSPLIT trajectory analysisJournal