PM10 and PM2.5 from Haze Smog and Visibility Effect in Chiang Mai Province Thailand

Jeensorn, Thitaporn; Apichartwiwat, Pornphan; Jinsart, Wanida

doi:10.35762/aer.2018.40.3.1

Cited by 11 publications

(4 citation statements)

References 15 publications

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“…Epidemiological studies have revealed a robust correlation between PM 2.5 levels and the morbidity of cardiovascular and respiratory diseases [1,2]. In addition, PM 2.5 has strong extinction abilities, and therefore, reduces atmospheric visibility and affects traffic safety [3,4]. Tropospheric ozone (O 3 ), as another air pollutant, has adverse effects on human health, ecosystems, and crop growth [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Correlations between PM2.5 and Ozone over China and Associated Underlying Reasons

et al. 2019

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We investigated the spatial-temporal characteristics of the correlations between observed PM2.5 and O3 over China at a national-scale level, and examined the underlying reasons for the varying PM2.5–O3 correlations by using a chemical transport model. The PM2.5 concentrations were positively correlated with O3 concentrations for most regions and seasons over China, while negative correlations were mainly observed in northern China during winter. The strongest positive PM2.5–O3 correlations with correlation coefficients (r) larger than +0.7 existed in southern China during July, and the strongest negative correlations (r < −0.5) were observed in northern China during January. It was a very interesting phenomenon that the positive PM2.5–O3 correlations prevailed for high air temperature samples, while the negative correlations were generally found in cold environments. Together, the effective inhibitory effect of PM2.5 on O3 generation by reducing photolysis rates and the strong titration effect of freshly emitted NO with O3 contributed to the strongest negative PM2.5–O3 correlations in northern China during January (i.e., in cold environments). The strongest positive correlations in southern China during July (i.e., at high temperature), however, were mainly attributed to the promoting effect of high O3 concentration and active photochemical activity on secondary particle formation.

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Section: Introductionmentioning

confidence: 99%

Correlations between PM2.5 and Ozone over China and Associated Underlying Reasons

et al. 2019

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“…It also varies greatly with altitude; while the visibility on Doi Inthanon or Doi Suthep can be above 10km, at the same time, Chiang Mai city centre has a visibility below 3 km. As the altitude decreases, the correlation between visibility and PM2.5 becomes stronger with R 2 >0.96 in low level basins (Pengchai et al, 2009;Jeensorn et al, 2018) (Fig. 5.10).…”

Section: Atmospheric Effects At Ground Levelmentioning

confidence: 94%

Comprehensive review of the annual haze episode in Northern Thailand

Pirard,

Charoenpanwutikul

2023

Preprint

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The mountainous part of northern Thailand is subject to an intense haze episode occurring almost every year between January and May. In the last couple of decades, this atmospheric phenomenon has been extensively covered in the media and is now a main concern for the population living in this area. In this review, we synthesized the information available from hundreds of publications on air pollution in Northern Thailand and surrounding regions. The review is tentatively comprehensive, including physical and chemical characteristics of air pollution, their emission sources and meteorological and climatological factors playing in the onset of haze. The effect on human health, the environment and development of agricultural, conservationist and technological practices is also covered. A significant part also focus on the socio-economical causes and solutions that have been brought by successive governments and organizations to solve this issue.

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“…There are many health problems from exposure to particulate matter with a diameter of less than 10 µm (PM10). Exposure to PM10 can affect the heart and lungs, causing chronic bronchitis and emphysema [5][6]. Also, other pollutants that bound to PM10, such as PAHs, should be a concern.…”

Section: Applied Environmental Researchmentioning

confidence: 99%

Ambient and Indoor PM10 and PM10-bound PAHs around the Vicinity of an Industrial Estate in Rayong, Thailand: Concentration and Source Identification

2021

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The ambient and indoor air concentrations of PM10 and PM10-bound PAHs (16 priority PAHs) were investigated in Rayong Province, Thailand. The locations of the selected study areas were Map Ta Phut Industrial Estate and its vicinity comprising six sampling sites (four industrial areas and two vicinity areas). The indoor and ambient air samples of were collected in March 2017. The sampling sites located close to the road were detected the greatest ambient average concentrations of PM10, with an average value of 56.06 µg m-3 (Map Chalut Area or MC). The levels of indoor PM10 were mostly dependent on the resident activities and the highest mean level of PM10 was 31.29 µg m-3 detected at Huai Pong. The Benzo(b)fluoranthene and acenaphthylene were the major PAHs found to have the highest 24-h average concentrations for both indoor and ambient air. The highest mean ambient and indoor air levels of benzo(b)fluoranthene were 49.18 and 30.88 ng m-3, respectively, found at MC. In terms of 16 total PAHs, MC was found to have the greatest level. Analysis of the diagnostic ratios determined that the traffic density was the major source of influence on particle-bound PAH concentrations for both ambient and indoor air samples, which indicated that the greater the traffic volume, the higher the level of PAHs.

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PM10 and PM2.5 from Haze Smog and Visibility Effect in Chiang Mai Province Thailand

Cited by 11 publications

References 15 publications

Correlations between PM2.5 and Ozone over China and Associated Underlying Reasons

Correlations between PM2.5 and Ozone over China and Associated Underlying Reasons

Comprehensive review of the annual haze episode in Northern Thailand

Ambient and Indoor PM10 and PM10-bound PAHs around the Vicinity of an Industrial Estate in Rayong, Thailand: Concentration and Source Identification

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