頁籤選單縮合
題 名 | 臺中都會盆地之能見度與氣象因子及空氣污染物的關係=Relationship between Visibility, Meteorological Factors, and Air Pollutants in the Taichung Urban Area |
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作 者 | 蔡瀛逸; 鄭曼婷; | 書刊名 | 中國環境工程學刊 |
卷 期 | 7:3 1997.09[民86.09] |
頁 次 | 頁297-307 |
分類號 | 445.63 |
關鍵詞 | 盛行能見度; 風速; 風向; 空氣污染物; Prevailing visibility; Wind speed; Wind direction; Air pollutants; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究利用臺中都會盆地之1951年至1995年氣象資料及1993年九月至1995年之空 氣品質資料,探討臺中都會盆地之能見度與氣象因子及空氣污染物的關係。分析發現,1950 年代至 1995 年臺中都會盆地之年平均能見度變化從 1950 年代初期超過 20 公里的良好視 程,降至近十年來僅有 8 公里。 能見度與氣溫風速呈現正相關,與相對濕度,空氣污染物 之 SO �砥ACO,PM �煄ANO �笑�持負相關。考慮能見度與空氣品質及氣象因子關係發現,臺 中都會盆地之能見度由原先未加入空氣污染物濃度前之多變數歸迴係數 0.38, 提高至加入 SO �砥ACo,PM �煄ANO �紊@度變化後的 0.60 之中度相關。 能見度的變化以 SO �砥ACO, PM �煄ANO �秣t合大氣溫度、相對濕度與風速等三項氣象因子之變異,可得到良好的經驗模 式。利用此經驗模式模擬 1996 年之月、季、年平均小時能見度,其觀測能見度模擬能見度 之間具有良好的估算及高達 0.82 以上之高相關性。 |
英文摘要 | Meteorological data measured in the Taichung urban area from 1951 to 1995 and air quality data from September 1993 to 1995 were analyzed in order to investigate the relationship of visibility to meteorological factors and air pollutants. The analyses revealed that the visual range during the early 1950's was more than 20 km and deteriorated to 8 km over the last 10 years. Visibility increased with temperature and wind speed but decreased with relative humidity and concentrations of SO ��,CO,PM ��,and No ��. The multivariate regression coefficient of visibility with the meteorological factors was 0.38 without taking the effect of air pollutants into consideration. The coefficient increased to 0.60 after the air quality variables were considered. These analyses established an empirical equation describing the variation of visibility with concentrations of SO ��,CO,PM ��, NO ��,temperature, relative humidity, and wind speed. The monthly, seasonal, and annual average hourly visibility in 1996 were well-simulated with correlation coefficients better than 0.82. |
本系統中英文摘要資訊取自各篇刊載內容。