서울시 대기오염측정소의 중복가능성 평가 (An Evaluation on Redundancy of Air Pollution Monitoring Stations in Seoul)

서지정보

· 발행기관 : 한국도시행정학회
· 수록지 정보 : 도시행정학보 / 24권 / 4호 / 299 ~ 313페이지
· 저자명 : 유재환, 김학열

초록

This paper presents a method to evaluate redundancy in 33 Air Pollution Monitoring Stations (APMS) during 2007 and 2008 at Seoul Metropolitan Area by comparing daily average concentrations of one station to the other among APMS for the cases of air pollutant NO_2, SO_2, and O_3. The criteria to be tested for redundancy are as follows: 1) to check if two stations are within 3㎞ distance, 2) by one-way ANOVA, to test whether the air pollution levels from the different station are statistically different, 3) by paired comparisons, to test whether the mean difference is significantly different from zero, 4) by estimating a simple linear regression model, to figure out whether the concentration level of one station is considered as being statistically equal to that of the other at any day.
The results show that no redundancy has been detected in daily average concentrations of both NO_2 and SO_2 during the two years. However, in the case of concentrations, Beon-dong and Banghak-dong station are identified to be possibly redundant since the test result gives the following conditions: 1) distance criterion is met between the two stations, 2) there is a statistical indication that the means of the concentrations at the two stations are equal, and 3) there is a strong evidence that the concentration of one station is able to be predicted by the other.
Therefore, the two stations can be recommended to remove one station or to move one station to a new location so that they may cover two exclusive areas

영어초록

This paper presents a method to evaluate redundancy in 33 Air Pollution Monitoring Stations (APMS) during 2007 and 2008 at Seoul Metropolitan Area by comparing daily average concentrations of one station to the other among APMS for the cases of air pollutant NO_2, SO_2, and O_3. The criteria to be tested for redundancy are as follows: 1) to check if two stations are within 3㎞ distance, 2) by one-way ANOVA, to test whether the air pollution levels from the different station are statistically different, 3) by paired comparisons, to test whether the mean difference is significantly different from zero, 4) by estimating a simple linear regression model, to figure out whether the concentration level of one station is considered as being statistically equal to that of the other at any day.
The results show that no redundancy has been detected in daily average concentrations of both NO_2 and SO_2 during the two years. However, in the case of concentrations, Beon-dong and Banghak-dong station are identified to be possibly redundant since the test result gives the following conditions: 1) distance criterion is met between the two stations, 2) there is a statistical indication that the means of the concentrations at the two stations are equal, and 3) there is a strong evidence that the concentration of one station is able to be predicted by the other.
Therefore, the two stations can be recommended to remove one station or to move one station to a new location so that they may cover two exclusive areas

참고자료

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