Y^^SO^^2 : SO^^2 concentration 로 나타나 大氣安定度의 構成期素인 風速, 雲量, 日射量 이외에도 氣溫, 濕度등 다른 氣象要素와도 關係가 있는 것으로 思料되었다.
6) Pasquill-Gifford 大氣安定度의 變化에 따른 Hanna-Gifford Model의 豫測値와 亞黃酸(SO^^2)가스의 實測 汚染度間의 相關性을 比較 그 整合度를 評價한 結果 相關係數 r(correlation of coefficient)과 直線回歸方程式(equation of linear regression)이
大氣安定度가 A等級일 때,
Y=0.38X + 16.30 (r=0.28)
大氣安定度가 B等級일 때,
Y=1.25X + 19.48 (r=0.32)
大氣安定度가 C等級일 때,
Y=1.30X + 0.40 (r=0.58)
大氣安定度가 D等級일 때,
Y=0.59X + 14.53 (r=0.29)
大氣安定度가 E等級일 때,
Y=0.25X - 9.46 (r=0.76)
大氣安定度가 F等級일 때,
Y=0.06X + 27.36 (r=0.37)
※ X : predicted value
Y : observed value 로 나타나 Hanna-Gifford Model을 利用한 大氣汚染豫測時 實測 氣象資料를 使用한 Pasquill-Gifford 大氣安定度의 出現分布中 最多出現頻度를 나타낸 F等級보다 E等級이 豫測値와 實測汚染度間의 整合度 評價結果 整合度가 더욱 높게 나타
났다.
[영문]
This study was carried out to assess validation of Pasquill-Gifford's atmospheric stability in the application to predicting of SO^^2 concentration using the Hanna-Gifford model. One-hour SO^2 concentration data observed at 5 sites in Seoul (Sungsu, Kuro, Mapo, Banpo, Jamsil) and meteorological data (wind speed, solar radiation, amount of cloud, temperature, relative humidity) were analyzed on the relationships between atmospheric stability and pollution degree.
The results were as follows ;
1. The total frequency of Pasquill-Gifford's atmospheric stability in Autumn, occured 6.1% of A class, occured 15.5% of B class, occured 8.2% of C class, occured 29.1% of D class, occured 7.9% of E class and occured 33.2% of F class respectively.
2. The daily frequency of Lasquill-Gifford' atmospheric stability class represented 11.3% of A class, 28.65% of B class, 15.09% of C class, and 44.94% of D class in daytime (06:00-18:00 hr), and 10.36% of D class, 17.22% of E class, 72.41% of F class in night time (19:00-24:00 hr, 01:00-05:00 hr)repectively.
3. The more atmosphere stable was, the night concentration of sulfur dioxide was ; at A class of the stability, concentration of SO^^2 represented 16.05±21.59 ppb, at B class, 16.14±23.98 ppb, ar C class, 16.14±23.98 ppb, at D class, 20.06±31.38 ppb, at E class, 20.06±31.389 ppb, at F class, 30.54±37.96 ppb, in
average and standard deviation respectively.
4. From the result of the stepwise regression analysis, SO^^2 concentration was much influenced by temperature, than factors of Pasquill-Gifford's atmospheric stability.
5. According to the observed data of sulfur dioxide and the predicted using the Hanna-Gifford model, it was validated that, at class of atmospheric stability, the regression showed in
Y^^A = 0.38x^^A + 16.30 (r= 0.28)
Y^^B = 1.25x^^B + 19.48 (r= 0.58)
Y^^C = 1.30x^^C + 0.40 (r= 0.58)
Y^^D = 0.59x^^D + 14.53 (r= 0.29)
Y^^E = 0.25x^^E - 9.46 (r= 0.76)
Y^^F = 0.06x^^F + 27.36 (r= 0.37)
where Y : the observed concentration of SO^^2
X : the predicted concentration of SO^^2
with the results, more valid at E class the observed SO^^2 data and the predicated was than the data at F class.