A study of the effect of open biomass burning aerosol on rainfall event over Malaysia by using EOF analysis.

Chen, Y.; Chan, A.; Yenn, T.F.; Ooi, C.G.; Li, L.

Abstract

Significant biomass burning aerosols resulted from biomass burning activities from Sumatra and Kalimantan Island transported to Malaysia every year from August to October by the southeast monsoon. These transboundary haze changes the precipitation pattern by aerosol interaction with radiation and cloud which affects the solar radiation budget and cloud condensation nuclei properties. In this work, empirical orthogonal function (EOF) was used to assess the effect of biomass burning aerosol on rainfall pattern over Malaysia from both a spatial and a temporal perspective. Over Peninsular Malaysia, regional rainfall activities tend to be suppressed by concentrated biomass burning aerosols and produce another heavy rain over the downwind areas after 30-60 days (60 days) under highly (less) populated condition. Similar precipitation pattern has been indicated over Sarawak and Sabah where biomass burning aerosols suppress rainfall in the southwestern area while leads to a more intensified rainfall event in the northeast area with 30-60 days (60 days) interval under highly (less) populated condition.

Citation

CHEN, Y., CHAN, A., YENN, T.F., OOI, C.G. and LI, L. 2023. A study of the effect of open biomass burning aerosol on rainfall event over Malaysia by using EOF analysis. IOP conference series: earth and environmental science [online], 1167: proceedings of the 2022 International conference on science and technology applications in climate change (STACLIM-2022), 29-30 November 2022, [virtual event], article number 012006. Available from: https://doi.org/10.1088/1755-1315/1167/1/012006

• Journal Article Type: Conference Paper
• Conference Name: 2022 International conference on science and technology applications in climate change (STACLIM-2022)
• Conference Location: [virtual event]
• Acceptance Date: Mar 28, 2023
• Online Publication Date: May 18, 2023
• Publication Date: Dec 31, 2023
• Deposit Date: Feb 20, 2024
• Publicly Available Date: Feb 20, 2024
• Journal: IOP conference series: earth and environmental science
• Print ISSN: 1755-1307
• Electronic ISSN: 1755-1315
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 1167
• Article Number: 012006
• DOI: https://doi.org/10.1088/1755-1315/1167/1/012006
• Keywords: Biomass burning haze; EOF; Precipitation
• Public URL: https://rgu-repository.worktribe.com/output/2055050