Abstract：Methane (CH4) is an important greenhouse gas and a key molecule in tropospheric photochemistry, some more potent than CO2. The remote-sensing experiments of CH4 were carried out in the fall of 2 000 in Beijng. The 6-day records of the atmospheric CH4 concentrations were examined by means of a time-series analysis using a fast Fourier transform with a low-pass filter to elucidate the seasonal cycles and the long-term trends. The variation in the long-time trends of the CH4 concentrations in Beijing may be ascribed to the emission changes in the CH4 sources due to the human activities such as waste dumping and landfills and the emission from motor vehicles. The correlation between the CH4 and CO concentrations was analyzed.
Key words：Greenhouse gas;FTIR;Emission from the motor vehicles;Correlation between CH4 and CO concentrations
魏秀丽,陆亦怀,高闽光,刘建国,刘文清,徐亮,张天舒,朱军,陈军 . 空气CH4浓度变化及其与CO的相关性[J]. 光谱学与光谱分析, 2007, 27(04): 668-670.
WEI Xiu-li, LU Yi-huai, GAO Min-guang, LIU Jian-guo, LIU Wen-qing, XU Liang, ZHANG Tian-shu, ZHU Jun, CHEN Jun. Atmospheric CH4 Concentrations and the Correlation between CH4 and CO Concentrations . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(04): 668-670.
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