| 拉萨地区夏季大气CO,SO2及NO2变化初探 |
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| 引用本文： | 周凌晞,汤 洁,于晓岚,林嘉仕,薛虎圣,石广玉,周秀骥.拉萨地区夏季大气CO,SO2及NO2变化初探[J].环境科学研究,2001,14(6):16-19. |
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| 作者姓名： | 周凌晞 汤 洁 于晓岚 林嘉仕 薛虎圣 石广玉 周秀骥 |
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| 作者单位： | 1.中国气象科学研究院,北京,100081 |
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| 基金项目： | 中国气象局大气化学开放实验室基金资助项目;
国家自然科学基金资助项目(49775275) |
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| 摘 要： | 为研究青藏高原大气臭氧的光化学过程及其与气溶胶的相互作用,1998年夏季在西藏拉萨郊区对大气CO,SO2及NO2进行了综合测量.初步分析表明,近地层CO日平均质量分数为140×10-9～750×10-9,夏末呈明显增高趋势,CO含量的日变化呈双峰型,清晨和傍晚较高,与当地人为活动排放、风向频率和大气混合层高度的日变化密切相关;SO2平均质量分数为0.15×10-9,NO2为0.39×10-9,NO2约是SO2的2.6倍,两者间存在一定的正相关,大致反映了该地区生物质燃料占主导的污染排放特征.
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| 关 键 词： | 拉萨 夏季 CO SO2 NO2 测量 |
| 文章编号： | 1001-6929(2001)06-0016-04 |
| 收稿时间： | 2000/12/15 0:00:00 |
| 修稿时间： | 2000年12月15 |
Preliminary Investigation of Atmospheric CO,SO2 and NO2Variation in Lhasa Area during Summer Time |
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| ZHOU Ling-Xi,TANG Jie,YU Xiao-lan,LAM Ka-se,XUE Hu-sheng,SHI Guang-yu and ZHOU Xiu-ji.Preliminary Investigation of Atmospheric CO,SO2 and NO2Variation in Lhasa Area during Summer Time[J].Research of Environmental Sciences,2001,14(6):16-19. |
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| Authors: | ZHOU Ling-Xi TANG Jie YU Xiao-lan LAM Ka-se XUE Hu-sheng SHI Guang-yu and ZHOU Xiu-ji |
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| Institution: | 1.Chinese Academy of Meteorological Sciences, Beijing 100081, China2.The Hong Kong Polytechnic University, Hung Hom, HK SAR, China3.Institute of Atmospheric Physics,Chinese Academy of Sciences, Beijing 100029, Chna |
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| Abstract: | In order to investigate ozone photochemistry and its interaction with aerosols over Qinghai-Tibetan Plateau,integrated measurements of atmospheric CO,SO2 and NO2 were made at Suburban Lhasa in summer 1998.Preliminary analysis showed that the daily averaged mass fraction of surface CO were in the range of 140×10-9 ～750×10-9 ,with obviously increasing trend in the late summer.The CO diurnal variation showed a two-peak pattern with one in the morning and the other in early evening.It has close correlation to the variations of local emission activities,frequency of wind direction and height of boundary layer.Averaged SO2 and NO2 mass fraction was around 0.15×10-9 and 0.39×10-9,respectively.NO2 level is about 2.6 times as that of SO2,with somewhat positive linear correlation between each other reflecting the predominant emission characteristics of biomass burning in that area. |
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