| 光谱学与光谱分析 |
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| Atmospheric CH4 Concentrations and the Correlation between CH4 and CO Concentrations |
| WEI Xiu-li, LU Yi-huai, GAO Min-guang, LIU Jian-guo, LIU Wen-qing, XU Liang, ZHANG Tian-shu, ZHU Jun, CHEN Jun |
| Chinese Academy of Sciences, Anhui Institute of Optics and Fine Machanics, Hefei 230031, China |
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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.
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Received: 2006-01-16
Accepted: 2006-05-06
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Corresponding Authors:
WEI Xiu-li
E-mail: xlwei@aiofm.ac.cn
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| Cite this article: |
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WEI Xiu-li,LU Yi-huai,GAO Min-guang, et al. Atmospheric CH4 Concentrations and the Correlation between CH4 and CO Concentrations [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(04): 668-670.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I04/668 |
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