Trans-boundary air pollution in a Southeast Asian megacity: Case studies of the synoptic meteorological mechanisms and impacts on air quality

Nguyen, Ly Sy Phu; Chang, Jackson Hian Wui; Griffith, Stephen M.; Hiền, Tô Thị; Kong, Steven Soon-Kai; Le, Hoai Nam; Huang, Hsiang-Yu; Sheu, Guey Rong; Lin, Neng-Huei

doi:10.1016/j.apr.2022.101366

Cited by 14 publications

(6 citation statements)

References 68 publications

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“…Nevertheless, other regions (e.g., central, north, and northeast) of Thailand, as well neighboring countries, may have significant influences on the air quality of BMR. For example, previous studies have reported that long-range transport of biomass burning emissions from neighboring countries, such as Myanmar, Laos, and Vietnam affect the air quality of Thailand 14 . Second, despite AOD serving as a reliable indicator of air pollution, AOD has an inherent limitation as it exclusively focuses on particulate matter and does not encompass gaseous pollutants such as ozone and nitrogen dioxide.…”

Section: Discussionmentioning

confidence: 99%

“…A recent study by Nguyen et al . assessed the impact of pollution in Ho Chi Minh City (HCMC) in Vietnam and found that Indonesian biomass burning and Chinese haze are responsible for degrading HNMC’s air quality under certain meteorological conditions 14 . These studies, while providing meaningful insights into the regional spillover effects of pollution, disregarded the impact of transboundary air pollution on land surface temperature.…”

Section: Introductionmentioning

confidence: 99%

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Land surface temperature and transboundary air pollution: a case of Bangkok Metropolitan Region

Sarker,

Fan,

Messina

et al. 2024

Sci Rep

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In a rapidly urbanizing world, heavy air pollution and increasing surface temperature pose significant threats to human health and lives, especially in densely populated cities. In this study, we took an information theory perspective to investigate the causal relationship between diel land surface temperature (LST) and transboundary air pollution (TAP) from 2003 to 2020 in the Bangkok Metropolitan Region (BMR), which includes Bangkok Metropolis and its five adjacent provinces. We found an overall increasing trend of LST over the study region, with the mean daytime LST rising faster than nighttime LST. Evident seasonal variations showed high aerosol optical depth (AOD) loadings during the dry period and low loadings at the beginning of the rainy season. Our study revealed that TAP affected diel surface temperature in Bangkok Metropolis significantly. Causality tests show that air pollutants of two adjacent provinces west of Bangkok, i.e., Nakhon Pathom and Samut Sakhon, have a greater influence on the LST of Bangkok than other provinces. Also, the bidirectional relationship indicates that air pollution has a greater impact on daytime LST than nighttime LST. While LST has an insignificant influence on AOD during the daytime, it influences AOD significantly at night. Our study offers a new approach to understanding the causal impact of TAP and can help policymakers to identify the most relevant locations that cause pollution, leading to appropriate planning and management.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Land surface temperature and transboundary air pollution: a case of Bangkok Metropolitan Region

Sarker,

Fan,

Messina

et al. 2024

Sci Rep

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“…non-point source with the largest contribution to pollutant load in segment 2 of the Wai Batu Merah watershed is a domestic non-point source (settlements) with a contribution of pollutant load to the BOD parameter of 11.76 kg/day with a contribution of 42.66%, COD of 16.17 kg/day with contribution of 33.60% and TSS of 11.17 kg/day with a contribution of 89.94%. Deficiencies in domestic waste management and the prevailing human behavior indirectly dispose of organic and inorganic waste as well as solid and liquid waste into water bodies, have increased the level of water pollution and reduced water quality (Nguyen et al, 2022).…”

Section: Pollutant Load Segmentmentioning

confidence: 99%

Pollutant Burden on Pollution Sources in the Wai Batu Merah Watershed, Sirimau District, Ambon City

Matulessy,

Kunu,

Kaya

2023

IJMABER

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This study aims to identify sources of pollution and determine the magnitude of the potential pollution load from pollutant sources in the Wai Batu Merah watershed, Sirimau District, Ambon City. The method for identifying sources of pollution is carried out by using saturated or census sampling methods, calculating pollutant loads using direct methods for point source pollutant sources and indirect methods for non-point sources . The direct calculation method uses wastewater discharge data and the results of wastewater quality analysis results from measurements directly at the point source pollutant wastewater treatment plant (WWTP). The wastewater sampling technique uses the grab sampling method. While the indirect method uses effluent factors and supporting data from non-point source pollution sources that have been identified in the Wai Batu Merah watershed. The results showed that the pollutant sources found in the Wai Batu Merah watershed were point sources originating from hotel and health facility activities and non-point sources originating from domestic activities from residential areas, agricultural and livestock businesses, non-point source land (forest and open land), micro, small and medium enterprises (MSMEs), small scale industries and waste. The dominant pollutant source in the Wai Batu Merah watershed comes from domestic non-point sources. The highest point source pollution loads for BOD, COD and TSS parameters in the Wai Batu Merah watershed came from hotel activities in segment 6 with the contribution of each parameter of 17.82 kg/day, 23.82 kg/day and 0.029 kg/day. Meanwhile, the highest non-point source pollution load for BOD, COD and TSS parameters came from non-point source waste in segment 6 with the contribution of each parameter of 2825.3 kg/day, 3884.8 kg/day and 2684.03 kg/day.

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“…The world's major cities are currently facing significant challenges posed by climate change, resulting in detrimental effects on respiratory health and increased levels of air pollution. 1–4 Among the pollutants of concern are ground-level ozone, nitrogen dioxide, 5 and fine and ultrafine particles 6 originating from fuel combustion, biomass burning, and industrial emissions. 7 Modern indoor lifestyles pose a significant risk of overexposure to particulate matter under 2.5 μm (PM 2.5 or fine) and 0.1 μm (PM 0.1 or ultrafine).…”

Section: Introductionmentioning

confidence: 99%

Sustainable surgical masks: optimizing fine/ultrafine particle filtration using PVA/chitosan electrospun nanofibers

Mata

Morais

OLIVEIRA

et al. 2023

Environ. Sci.: Nano

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Trans-boundary air pollution in a Southeast Asian megacity: Case studies of the synoptic meteorological mechanisms and impacts on air quality

Cited by 14 publications

References 68 publications

Land surface temperature and transboundary air pollution: a case of Bangkok Metropolitan Region

Land surface temperature and transboundary air pollution: a case of Bangkok Metropolitan Region

Pollutant Burden on Pollution Sources in the Wai Batu Merah Watershed, Sirimau District, Ambon City

Sustainable surgical masks: optimizing fine/ultrafine particle filtration using PVA/chitosan electrospun nanofibers

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