Identifying the correlation between rainfall, traffic flow performance and air pollution concentration in Seoul using a path analysis

Kwak, Ha-Young; Ko, Joonho; Lee, Seungho; Joh, Chang‐Hyeon

doi:10.1016/j.trpro.2017.05.288

Cited by 35 publications

(21 citation statements)

References 9 publications

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“…These inversions trapped pollution and restricted vertical mixing, making pollution stagnant, thus increasing PM 2.5 concentrations [ 38 , 39 ]. Increased rainfall reduced PM 2.5 concentration through wet deposition by washing out the particles from the atmosphere [ 40 ]. Stagnation was perpetuated by lower wind speeds, although a decrease in wind speed did not cause an immediate increase in PM 2.5 concentration because there was a brief lag period in which PM 2.5 concentrations would build up.…”

Section: Resultsmentioning

confidence: 99%

An Assessment of Annual Mortality Attributable to Ambient PM2.5 in Bangkok, Thailand

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et al. 2020

IJERPH

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Multiple studies indicate that PM2.5 is the most deleterious air pollutant for which there are ambient air quality standards. Daily concentrations of PM2.5 in Bangkok, Thailand, continuously exceed the World Health Organization (WHO) and the Thai National Ambient Air Quality Standards (NAAQSs). Bangkok has only recently begun to measure concentrations of PM2.5. To overcome this paucity of data, daily PM2.5/PM10 ratios were generated over the period 2012–2018 to interpolate missing values. Concentration-response coefficients (β values) for PM2.5 versus non-accidental, cardiopulmonary, and lung cancer mortalities were derived from the literature. Values were also estimated and were found to be comparable to those reported in the literature for a Chinese population, but considerably lower than those reported in the literature from the United States. These findings strongly suggest that specific regional β values should be used to accurately quantify the number of premature deaths attributable to PM2.5 in Asian populations. Health burden analysis using the Environmental Benefits Mapping and Analysis Program (BenMAP) showed that PM2.5 concentration in Bangkok contributes to 4240 non-accidental, 1317 cardiopulmonary, and 370 lung cancer mortalities annually. Further analysis showed that the attainment of PM2.5 levels to the NAAQSs and WHO guideline would reduce annual premature mortality in Bangkok by 33%and 75%, respectively.

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Section: Resultsmentioning

confidence: 99%

An Assessment of Annual Mortality Attributable to Ambient PM2.5 in Bangkok, Thailand

Fold

Allison

Wood

et al. 2020

IJERPH

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“…Moreover, Bengaluru and Mumbai have witnessed heavy rains during the considered time frame. Generally, O 3 production is limited during cool or rainy weather conditions ( Kwak et al, 2017 ).…”

Section: Discussionmentioning

confidence: 99%

Impact of lockdown on air quality over major cities across the globe during COVID-19 pandemic

2020

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In present study, the variation in concentration of key air pollutants such as PM 2.5 , PM 10 , NO 2 , SO 2 and O 3 during the pre-lockdown and post-lockdown phase has been investigated. In addition, the monthly concentration of air pollutants in March, April and May of 2020 is also compared with that of 2019 to unfold the effect of restricted emissions under similar meteorological conditions. To evaluate the global impact of COVID-19 on the air quality, ground-based data from 162 monitoring stations from 12 cities across the globe are analysed for the first time. The concentration of PM 2.5 , PM 10 and NO 2 were reduced by 20–34%, 24–47% and 32–64%, respectively, due to restriction on anthropogenic emission sources during lockdown. However, a lower reduction in SO 2 was observed due to functional power plants. O 3 concentration was found to be increased due to the declined emission of NO. Nevertheless, the achieved improvements were temporary as the pollution level has gone up again in cities where lockdown was lifted. The study might assist the environmentalist, government and policymakers to curb down the air pollution in future by implementing the strategic lockdowns at the pollution hotspots with minimal economic loss.

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“…Curah hujan memiliki korelasi negatif terhadap konsentrasi NO 2 . Hal ini disebabkan karena hujan memberikan efek "washing" terhadap polutan NO 2 di udara [20]. Faktor meteorologi lain yang berpotensi mempengaruhi pencemaran udara oleh NO 2 adalah angin.…”

Section: Pendahuluanunclassified

“…Hal ini sesuai dengan Ref. [20] yang menunjukkan korelasi negatif antara rainfall dan konsentrasi NO 2 terukur. Hal tersebut terjadi akibat efek "washing" oleh air hujan terhadap NO 2 di udara.…”

Section: Gambar 3 Konsentrasi Gas No 2 DI Stasiun Pemantauan Dki-1 Punclassified

Pengaruh Faktor Meteorologi Terhadap Konsentrasi NO2 di Udara Ambien (Studi Kasus Bundaran Hotel Indonesia DKI Jakarta)

Serlina

2020

JSE

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A combustion process in power plants, industry and transportation can cause air pollution problems, one of which is the pollutant of Nitrogen Dioxide (NO2) gas. One of the stages of air quality management is monitoring. In monitoring air quality, there are several factors that need to be considered because they can affect the measurement, there are meteorological factors. This study analyzes how temperature, humidity, rainfall and wind speed affect the measured NO2 concentration. NO2 and meteorological concentration data were taken at the same time at the location of the DKI-1 air quality monitoring station (Bundaran Hotel Indonesia, DKI Jakarta). Analysis of the relationship between measured NO2 concentrations with temperature, humidity, rainfall and wind speed was performed using multiple linear regression analysis. The analysis showed that there was a strong relationship between NO2 concentration and four meteorological factors. The R2 value indicates the effect of the four meteorological factors on NO2 concentrations is 38.3% and the remaining 61.7% is influenced by other factors not included in the measurements in this study.

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Identifying the correlation between rainfall, traffic flow performance and air pollution concentration in Seoul using a path analysis

Cited by 35 publications

References 9 publications

An Assessment of Annual Mortality Attributable to Ambient PM2.5 in Bangkok, Thailand

An Assessment of Annual Mortality Attributable to Ambient PM2.5 in Bangkok, Thailand

Impact of lockdown on air quality over major cities across the globe during COVID-19 pandemic

Pengaruh Faktor Meteorologi Terhadap Konsentrasi NO2 di Udara Ambien (Studi Kasus Bundaran Hotel Indonesia DKI Jakarta)

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