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KMID : 0353019730100010039
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Korean Journal of Public Health
1973 Volume.10 No. 1 p.39 ~ p.48
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A Study of the Effects of the Meteorological Conditions on Air Pollution in Seoul Area
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Abstract
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In an attempt to evaluate the air pollution in Seoul area, the levels of sulfur oxides (mg SO₃/100 cm²/day) by lead peroxide candle method and the dust falls (ton/km²/mon.) by deposit gauge method were measured monthly at 25 points(4km²) in industrial, commercial, residential and green areas for three years from 1969 to 1971.
The effect of weather factors on the pollution was studied with the meteorological data from the National Centural Meteorological Office.
The results are followings;
1. Average concentrations of sulfur oxide were 1.092mg SO₃/100cm²/day in 1969, 1.171 in 1970 and 1.333 in 1971 and the total average of three years was 1.206(S.D. 0.522).
2. Average amount of dust falls was 22.2tons/km²/mon. in 1969, 23.6 in 1970 and 25.4. in 1971 and the total average of the three years was 23.7 (S.D 11.6).
3. The above data of air pollution was matched according to season and area and their correlationship to air pollution was analyzed by computser.
(1) The ana1ysis has showed the highest concentration of sulfur oxide with 1.592mgSO₃/100cm²/day in winter and with 1.566. in industrial area.
(2) Dust falls, however, has showed the heaviest with 29.9tons/km²/mon. in spring with 33.7. in road commercial area.
(3) According to the correlationship between the air pollution concentration and the climatic elements which were checked simultaneously with pollutants, sulfur oxides were high with 1.464mg SO₃/100cm²/day when the atmospheric pressure was over 1.020 mb. and 1.592. when the air temperature was below 0.0℃.
It was found that the concentration of air pollution due to sulfur oxide was high when the weather showed high atmospheric pressure at the time there were few cloudes in the sky and many hours of sunshine.
It was natural from the view point of topography that Seoul showed the wind direction of west, west-west-north in winter and the wind direction in the winter season showed a significant effect on air pollution in the city area.
Dust falls was heavy when the atmospheric pressure and air temperature was high and when the humidity was low and amount of clouds were few.
The amount of dust falls was the highest with 26.4 tons/km²/mon. when the wind velocity was over 2.7m/sec. and was low when the amount of precipitation was almost daily and heavy.
4. Contribution rate (ESS/TSS : Explained Sum of Squares/Total Sum of Squaresx100) of climatic element effecting the air pollution during the study period was analyzed by Multiple Classification Analysis method (M.C.A) using the computer.
The results are follows;
48.8% of sulfur oxide and 45.0% of dust falls due to the weather condition.
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