摘要
对2008年3月至2009年2月本溪黑碳气溶胶浓度观测资料进行了研究分析。结果表明,本溪黑碳平均浓度值为6.877μg/m3,日平均浓度变化范围为0.592~20.577μg/m3,每小时平均浓度最大值达64.518μg/m3;黑碳浓度具有明显的季节变化,夏季的平均浓度最低,最高值出现在冬季的1月份,这与冬季取暖和近地层经常出现逆温等有关;黑碳浓度日变化有明显的峰值和谷值,黑碳浓度最高值一般出现在6：00~9：00和17：00~19：00,低值出现在2：00~4：00和12：00~15：00;与国外城市相比,本溪黑碳浓度明显偏高,与国内城市北京、四川温江和西安相比,浓度相差不大。
Black carbon （BC） aerosols concentrations observed in Benxi from March 2008 to February 2009 were analyzed. Results showed that the mean concentration of atmospheric BC aerosols in Benxi was 6.877 μg/m^2 and daily mean concentration varied from 0.592 μg/m3 to 20.577 μg/m3,with hourly concentration maximum of 64.518 μg/m3. Because of the influences of winter heating and high frequency of temperature inversion in the surface layer, the concentration of BC varied with season obviously,the concentration value was low in summer, and the highest BC concentration appeared in January. Daily variation of BC concentration was characterized by a pronounced double peak patterns, with the higher concentration during 6：00-9：00 AM and 17：00-19：00 PM, and the lower one during 2：00-4：00 AM and 12：00-5：00 PM. Compared to the domestic cities such as Beijing, Wenjiang in Sichuan, and Xi＇an, Benxi has roughly the same concentration, but the BC concentration in Benxi is obviously higher than foreign cities.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第12期22-25,共4页
Environmental Science & Technology
基金
公益性行业气象科研专项(GYHY200806020)
国家自然科学基金面上项目(40975084)
中国气象局沈阳大气环境研究所基本科研业务费项目共同资助(SYKYYW201101)
关键词
本溪
黑碳气溶胶
研究
Benxi
black carbon aerosol
study
