• Title/Summary/Keyword: Air pollution

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Regional Air Pollution Problems in East Asia and International Role of Research Exchange

  • Akimoto, Hajime
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2000.11a
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    • pp.8-8
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    • 2000
  • As economy and population have been growing, air pollution problems both in local and regional scale came to the surface in East Asia in last decades. In addition to urban problems, regional air pollution is also becoming a big issue international concern. Urban and regional air pollution issues are closely related and we have to tackle the problem by understanding underlying scientific reality and taking a strategic approach to mitigation. (omitted)

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A Study on the Air Pollution Potential in the Central Part of Korea (中部地方 各地의 大氣汚染潛在力에 관한 硏究)

  • 李鍾範
    • Journal of Korean Society for Atmospheric Environment
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    • v.7 no.1
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    • pp.41-47
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    • 1991
  • Air pollution potentials of the 7 cities in the central part of Korea were obtained with the mean wind speed within the mixed layer and the mixed layer height calculated by the Jump Model. Seasonal variation of the afternoon mixed layer height in Seoul area shows that low in winter and high in summer. Annual mean of the morning air pollution potential was lowest in Incheon and highest in Wonju. On the other hand annual mean of the afternoon air pollution potential was lowest in Incheon and highest in Chuncheon. Relatively low air pollution potential in Incheon can be explained as high mixed layer height and the effect of sea breeze.

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Development of an Air Pollution Monitoring and Forecasting System (대기오염(大氣汚染) 감시(監視) 및 예측(豫測) 시스템 개발)

  • Chang, D.I.;Lee, T.W.;Hong, W.H.;Hong, Y.
    • Journal of Biosystems Engineering
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    • v.17 no.2
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    • pp.177-191
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    • 1992
  • The MAFSAP(Monitoring and Forecasting System of Air Pollution) was developed to measure the weather and air pollution data automatically, then make them input to microcomputer and analyze them for monitoring and forecasting air pollution at all times. And the air pollution telemetering systems installed at Young-Dong Thermal Power Plant was analyzed and an ideal telemetering system utilizing MAFSAP was suggested.

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A Study on Allocation of Air Pollution Monitoring Network by Spatial Distribution Analysis of Ozone and Nitrogen Dioxide Concentrations in Busan (부산지역 오존 및 이산화질소 농도의 공간분포해석에 따른 대기오염측정망 배치연구)

  • Yoo, Eun-Chul;Park, Ok-Hyun
    • Journal of Korean Society for Atmospheric Environment
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    • v.20 no.5
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    • pp.583-591
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    • 2004
  • In this study, methodologies for the rational organization of air pollution monitoring network were examined by understanding the characteristics of temporal and spatial distribution of secondary air pollution, whose significance would increase hereafter. The data on $O_3$ and $NO_2$ concentrations during high ozone period in 1998~1999 recorded at the nine air pollution monitoring station in Busan were analysed using principal component analysis (PCA) and cumulative semivariogram. It was found that the ozone concentration was deeply associated with the daily emission characteristics or the $O_3$ precusors, and nitrogen dioxide concentration largely depends on the emission strength of regional sources. According to the spatial distribution analysis of ozone and nitrogen dioxide in Busan using cumulative semivariograms, the number of monitoring stations for the secondary air pollution can be reduced in east-west direction, but reinforced in north-south direction to explain the spacial variability. More scientific and rational relocation of air pollution monitoring network in Busan would be needed to investigate pollution status accurately and to plan and implement the pollution reduction policies effectively.

An Ecological Study of Lung Cancer Mortality and Severe Air Pollution in the 1960s in an Industrial City in Japan

  • Shima, Masayuki;Yoda, Yoshiko
    • Asian Journal of Atmospheric Environment
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    • v.3 no.1
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    • pp.9-18
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    • 2009
  • This study aimed at assessing the association between exposure to severe air pollution in the past and the subsequent transition in lung cancer mortality among persons who lived in an industrial city. Vital statistics from 1983 to 2006 and the data on air pollution measurements from 1960 to 1990 in Amagasaki City, Japan, were used. Pearson correlation coefficients were calculated between the standardized mortality ratios (SMRs) for lung cancer and the air pollution levels in 6 wards of Amagasaki City. The associations between changes in air pollution levels and the annual SMRs were also evaluated in the light of a potential latency period. The levels of air pollution were extremely high in the 1960s, and they decreased since 1970. The SMRs for lung cancer in 1989-1993 among females for 6 wards were significantly associated with the amounts of both sulfur oxides and dust fall in the past for each ward. The positive associations were observed between the annual SMRs among females and the amounts of both pollutants when the lag time of 20-30 years was taken into account. These results suggest that severe air pollution in the 1960s in an industrial city affected the subsequent increase in lung cancer mortality.

Predicting the Power Output of Solar Panels based on Weather and Air Pollution Features using Machine Learning

  • Chuluunsaikhan, Tserenpurev;Nasridinov, Aziz;Choi, Woo Seok;Choi, Da Bin;Choi, Sang Hyun;Kim, Young Myoung
    • Journal of Korea Multimedia Society
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    • v.24 no.2
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    • pp.222-232
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    • 2021
  • The power output of solar panels highly depends on environmental situations like weather and air pollution. Due to bad weather or air pollution, it is difficult for solar panels to operate at their full potential. Knowing the power output of solar panels in advance helps set up the solar panels correctly and work their possible potential. This paper presents an approach to predict the power output of solar panels based on weather and air pollution features using machine learning methods. We create machine learning models with three kinds set of features, such as weather, air pollution, and weather and air pollution. Our datasets are collected from the area of Seoul, South Korea, between 2017 and 2019. The experimental results show that the weather and air pollution features can be efficient factors to predict the power output of solar panels.

Analysis of Air Pollutant Sources Contribution by using Ratio of Sulfur Dioxide Gas to Nitrogen Oxides Gas (질산화가스와 아황산가스의 비를 이용한 대기오염 기여도 분석)

  • Wan, Cha-Ju;Cheol, Choe-Byeong;Cheon, Choe-Jae
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.05b
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    • pp.261-264
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    • 2003
  • We try to distribute air pollution sources at target area. The complex method is used to distribute air pollution sources. Most of people, However, want to simple indicator as standard for express air pollution source. In many area, air pollution is caused by different types of sources. The general type is point source, such as tall stack of power plants and oil refineries stacks. A second type is areal source, such as local industry and transportation. In this aspect, the ratio of sulfur dioxide to nitrogen oxides (RSN =SO$_2$/NOx)is an indicator of air pollution source. the role of this ratio is to show the characteristics at target area of the relationship the point and the areal source. (omitted)

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Air Pollution by Automobiles and Ways of Reduction (자동차가 대기오염에 미치는 영향과 저감방안)

  • 김대식
    • Journal of the Korean Professional Engineers Association
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    • v.34 no.4
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    • pp.69-73
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    • 2001
  • Due to the rapid increase of automobiles and daily driving distances, air pollution by automobiles is still dominant problem of large city in spite of strict emission refutation and development of reduction technologies. Among the air pollution resources of automobile , industry. electricity generation and heating. automobile keeps 51% of total nationwide air pollution in 1998 and this proportion Is increasing in large cities from 65% to 85%. To reduce these air pollution. catalytic converter and electronic engine control, exhaust gas re-circulation and evaporative emission control system have continuously developed and applied to automobiles since 1987. Also strong emission standards and emission durability warranty have enforced and monitored annually by sampling several vehicle models. But technologies and regulations are incomplete, driver should participate in reducing air pollution for himself by planning driving, avoiding unnecessary idle and air conditioning, keeping periodic maintenance and using mass transportation.

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Review of epidemiological studies on air pollution and health effects in children

  • Lee, Jong-Tae
    • Clinical and Experimental Pediatrics
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    • v.64 no.1
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    • pp.3-11
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    • 2021
  • There is a growing body of literature on the adverse health effects of ambient air pollution. Children are more adversely affected by air pollution due to their biological susceptibility and exposure patterns. This review summarized the accumulated epidemiologic evidence with emphasis on studies conducted in Korea and heterogeneity in the literature. Based on systematic reviews and meta-analyses, there is consistent evidence on the association between exposure to ambient air pollution and children's health, especially respiratory health and adverse birth outcomes, and growing evidence on neurodevelopmental outcomes. Despite these existing studies, the mechanism of the adverse health effects of air pollution and the critical window of susceptibility remain unclear. There is also a need to identify causes of heterogeneity between studies in terms of measurement of exposure/outcome, study design, and the differential characteristics of air pollutants and population.