| 大气甲烷浓度的差分吸收测量 |
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| 引用本文： | 孔琴心,王良辰.大气甲烷浓度的差分吸收测量[J].应用气象学报,1993,4(2):245-249. |
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| 作者姓名： | 孔琴心 王良辰 |
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| 作者单位： | 1.中国科学院大气物理研究所 北京100029
(孔琴心，王庚辰，刘广仁)，中国科学院大气物理研究所 北京100029(顾志芳) |
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| 摘 要： | 该文讨论了用双He-Ne激光监测环境大气中甲烷的差分吸收方法，在实验室测量了甲烷对He-Ne激光波长的吸收系数，并且用3.3922 μm和3.3912 μm线在室外进行了甲烷浓度的测量。测量获得当地近地面自然大气中的甲烷平均浓度值为1.78 ppm，标准偏差σx=0.238 ppm。
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| 关 键 词： | 差分吸收 氦氖激光 甲烷监测 |
Differential Absorption Measurements of Atmospheric Methane Concentration |
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| Kong Qinxin Wang Gengchen Liu Guangren Gu Zhifang.Differential Absorption Measurements of Atmospheric Methane Concentration[J].Quarterly Journal of Applied Meteorology,1993,4(2):245-249. |
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| Authors: | Kong Qinxin Wang Gengchen Liu Guangren Gu Zhifang |
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| Institution: | 1.(Institute of Atmospheric Physics, Academia Sinica, Beijing 100029) |
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| Abstract: | The differential absorption method with two He-Ne lasers is discussed for the monitoring of methane in the ambient atmosphere. Absorption coefficients of methane at He-Ne laser emiting wavelengths are measured in the laboratory. By using a pair of 3.3922μm laser lines, the measurements of methane concentration are made in outdoors. The average methane concentration of 1.77ppm in the natural atmosphere near the ground is obtained |
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| Keywords: | Differential absorption He-Ne laser Methane monitoring |
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