Pollution Research Paper

Vol 38, Issue 3, 2019; Page No.(812-819)

AIR QUALITY HISTORICAL OVER MALAYSIA AND NEARBY AREA: 1980-2018

ABD RAHMAN MAT AMIN, ADIDA MUHAMMUD, WAN FARAHIYAH WAN KAMARUDDIN, FATHINUL NAJIB AHMAD SA’AD, RIVAIE ALI AND ASMALA AHMAD

Abstract

Lately Malaysia, located at the South East Asia region are prone to the haze events that regularly occurs during the dry season which starts from late May to late September. This event could reduce visibility and affects human health. The haze is highly related to the widespread open burning for agriculture purposes in Indonesia. One of the physical parameters that can be used to monitor this event is aerosol optical depth (AOD). AOD is the degree to which aerosols prevent the transmission of light by absorption or scattering of light. The AOD value that are greater than 0.4 is considered hazy meanwhile AOD greater than 1.0 is associated with very heavy haze due to fires. The main objective of this study is to investigate haze events over this area for the period of 1980 to 2018. This study has utilized MERRA-2 AOD dataset that is available through Giovanni, a web based tool for access visualization and analysis of satellite remote sensing products. The result shows that the highest haze event starts in late July and endsin late September. Almost all the haze events originated from Sumatera and Kalimantan and transported to Malaysia by the Southwest monsoon wind. The worst haze events are observed in 1997 whereas this event lasted for 5 months.

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