Source emission contributions to particulate matter and ozone, and their health impacts in Southeast Asia
Southeast Asia has been experiencing severe air pollution due to its substantial local emissions and transboundary air pollution (TAP), causing significant health impacts. While literature focused on air pollution episodes in Southeast Asia, we have yet to fully understand the contributions of local...
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sg-ntu-dr.10356-1786812024-07-08T15:30:46Z Source emission contributions to particulate matter and ozone, and their health impacts in Southeast Asia Gu, Yefu Fang, Tingting Yim, Steve Hung Lam Asian School of the Environment Lee Kong Chian School of Medicine (LKCMedicine) Earth Observatory of Singapore Earth and Environmental Sciences Source apportionment Species tagging Southeast Asia has been experiencing severe air pollution due to its substantial local emissions and transboundary air pollution (TAP), causing significant health impacts. While literature focused on air pollution episodes in Southeast Asia, we have yet to fully understand the contributions of local emission sectors and TAP to air quality in the region annually. Herein we employed air quality modeling with the species tagging method to first assess the contributions of source sectors and locations to fine particulate matter (PM2.5) and ozone (O3) in Southeast Asia and to hence quantify the resultant health impacts. Our results show that air pollutant exposure was associated with ∼ 900 thousand premature mortalities in Southeast Asia every year. Of which, 77 % and 23 % were due to local emissions and TAP in the region, respectively. ∼ 87 % of the premature mortalities due to local emissions were induced by PM2.5 exposure, whereas the remaining were due to O3 exposure. PM2.5-related health impacts were dominated by industrial (45 %) and residential (17 %) emissions, and O3-related impacts were mainly due to biogenic (40 %) and road transport (24 %) emissions. Furthermore, the health impacts of TAP were particularly adverse in Brunei, East Timor, Singapore, Laos, and border regions. Ministry of Education (MOE) Published version This research is jointly supported by the Ministry of Education, Singapore, under its MOE AcRF Tier 3 Award MOET32022-0006, the Start-up Grant (021452-00001) (LKC) and Start-up Grant (021384- 00001) for Assoc. Prof. Yim (ASE), the MOE Academic Research Fund (AcRF) Tier 1 Project (award no: RT2/22) and EOS FY2022 funding (award no: EOS MOE RCE FY 2022). 2024-07-02T06:13:34Z 2024-07-02T06:13:34Z 2024 Journal Article Gu, Y., Fang, T. & Yim, S. H. L. (2024). Source emission contributions to particulate matter and ozone, and their health impacts in Southeast Asia. Environment International, 186, 108578-. https://dx.doi.org/10.1016/j.envint.2024.108578 0160-4120 https://hdl.handle.net/10356/178681 10.1016/j.envint.2024.108578 38522230 2-s2.0-85188700758 186 108578 en MOET32022-0006 021452-00001 021384-00001 RT2/22 EOS MOE RCE FY 2022 Environment International © 2024 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). application/pdf |
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Earth and Environmental Sciences Source apportionment Species tagging Gu, Yefu Fang, Tingting Yim, Steve Hung Lam Source emission contributions to particulate matter and ozone, and their health impacts in Southeast Asia |
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Southeast Asia has been experiencing severe air pollution due to its substantial local emissions and transboundary air pollution (TAP), causing significant health impacts. While literature focused on air pollution episodes in Southeast Asia, we have yet to fully understand the contributions of local emission sectors and TAP to air quality in the region annually. Herein we employed air quality modeling with the species tagging method to first assess the contributions of source sectors and locations to fine particulate matter (PM2.5) and ozone (O3) in Southeast Asia and to hence quantify the resultant health impacts. Our results show that air pollutant exposure was associated with ∼ 900 thousand premature mortalities in Southeast Asia every year. Of which, 77 % and 23 % were due to local emissions and TAP in the region, respectively. ∼ 87 % of the premature mortalities due to local emissions were induced by PM2.5 exposure, whereas the remaining were due to O3 exposure. PM2.5-related health impacts were dominated by industrial (45 %) and residential (17 %) emissions, and O3-related impacts were mainly due to biogenic (40 %) and road transport (24 %) emissions. Furthermore, the health impacts of TAP were particularly adverse in Brunei, East Timor, Singapore, Laos, and border regions. |
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Asian School of the Environment |
author_facet |
Asian School of the Environment Gu, Yefu Fang, Tingting Yim, Steve Hung Lam |
format |
Article |
author |
Gu, Yefu Fang, Tingting Yim, Steve Hung Lam |
author_sort |
Gu, Yefu |
title |
Source emission contributions to particulate matter and ozone, and their health impacts in Southeast Asia |
title_short |
Source emission contributions to particulate matter and ozone, and their health impacts in Southeast Asia |
title_full |
Source emission contributions to particulate matter and ozone, and their health impacts in Southeast Asia |
title_fullStr |
Source emission contributions to particulate matter and ozone, and their health impacts in Southeast Asia |
title_full_unstemmed |
Source emission contributions to particulate matter and ozone, and their health impacts in Southeast Asia |
title_sort |
source emission contributions to particulate matter and ozone, and their health impacts in southeast asia |
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2024 |
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https://hdl.handle.net/10356/178681 |
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1806059928356388864 |