| 北京城市大气N2O浓度及其变化 |
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| 引用本文： | 王长科,王跃思,郑循华,刘广仁,王明星.北京城市大气N2O浓度及其变化[J].中国环境科学,2003,23(5):557-560. |
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| 作者姓名： | 王长科 王跃思 郑循华 刘广仁 王明星 |
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| 作者单位： | 中国科学院大气物理研究所,大气边界层物理和大气化学国家重点实验室,北京,100029 |
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| 基金项目： | 中国科学院知识创新工程重大项目(KZCX1-SW-01) |
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| 摘 要： | 1993~2000年对北京大气N2O进行了连续8年的观测,结果表明,北京大气N2O浓度8年平均值为315.85.9nmol/mol;浓度由1993年的309.7nmol/mol增长到2000年的328.6nmol/mol,年平均增长率为0.9%.1995年以来增长加速,年平均增长率为1.3%.化石燃料燃烧N2O排放量的逐年增长对北京大气N2O浓度的上升趋势有促进作用.北京大气N2O浓度季节变化不十分明显,N2O浓度日变化在所有季节中也无明显规律.
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| 关 键 词： | 大气N2O 城市环境 北京市 |
| 文章编号： | 1000-6923(2003)05-0557-04 |
| 修稿时间： | 2003年2月24日 |
Concentration and its variations of atmospheric nitrous oxide in urban area of Beijing |
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| WANG Chang-ke,WANG Yue-si,ZHENG Xun-hua,LIU Guang-ren,WANG Ming-xing.Concentration and its variations of atmospheric nitrous oxide in urban area of Beijing[J].China Environmental Science,2003,23(5):557-560. |
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| Authors: | WANG Chang-ke WANG Yue-si ZHENG Xun-hua LIU Guang-ren WANG Ming-xing |
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| Abstract: | Atmospheric N2O in Beijing was measured from 1993 to 2000 continuously for 8 years. The average value of atmospheric N2O concentration of these 8 years in Beijing was 315.85.9nmol/mol; the concentration increased from 309.7nmol/mol in 1993 to 328.6nmol/mol in 2000, with an annual average rate of 0.9%. It rose more quickly at an annual average rate of 1.3%, from 1995 to 2000. The increase year after year of N2O emission from fossil fuel combustion promoted the rising trend of atmospheric N2O concentration in Beijing. Its seasonal variation was not quite obvious and its daily variation in all seasons had also no obvious rule. |
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| Keywords: | atmospheric N2O urban environment Beijing City |
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