Key Laboratory for Atmospheric Optics of National High Technology Research and Development Plan,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031 E-mail:hlwei@naol.hfcas.ac.cn; Key Laboratory for Atmospheric Optics of National High Technology Research and Development Plan,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031 E-mail:hlwei@naol.hfcas.ac.cn; Key Laboratory for Atmospheric Optics of National High Technology Research and Development Plan,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031 E-mail:hlwei@naol.hfcas.ac.cn; Key Laboratory for Atmospheric Optics of National High Technology Research and Development Plan,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031 E-mail:hlwei@naol.hfcas.ac.cn; Key Laboratory for Atmospheric Optics of National High Technology Research and Development Plan,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031 E-mail:hlwei@naol.hfcas.ac.cn
Infrared solar spectra on clear days were measured automatically by an infrared solar spectrometer(ISS) with 0.4 cm-1 resolution developed by us.A line-by line(LBL) computation method was used to calculate theoretical atmospheric absorption.In the wavelength range of 3.410-3.438 μm.the absorption is mainly due to atmospheric methane and water vapor.Columnatmospheric methane was retrieved from the recorded infrared solar spectra.The seasonal variation of column atmospheric methane in Hefei has been obtained from the measuremental data of nearly 18 months since the April of 1997.and found that it is similar to that of background data.The instruments.principles of measurement and some of results were introduced,and the results are also discussed briefly in the paper.
WEI Heli, LIU Qinghong, XU Qingshan, ZHAO Fengsheng, SONG Zhengfang. 2001: REMOTE SENSING OF THE SEASONAL VARIATION IN COLUMN ABUNDANCE OF ATMOSPHERIC CH4*. Journal of Meteorological Research, 15(2): 249-256.
WEI Heli, LIU Qinghong, XU Qingshan, ZHAO Fengsheng, SONG Zhengfang. 2001: REMOTE SENSING OF THE SEASONAL VARIATION IN COLUMN ABUNDANCE OF ATMOSPHERIC CH4*. Journal of Meteorological Research, 15(2): 249-256.
WEI Heli, LIU Qinghong, XU Qingshan, ZHAO Fengsheng, SONG Zhengfang. 2001: REMOTE SENSING OF THE SEASONAL VARIATION IN COLUMN ABUNDANCE OF ATMOSPHERIC CH4*. Journal of Meteorological Research, 15(2): 249-256.
Citation:
WEI Heli, LIU Qinghong, XU Qingshan, ZHAO Fengsheng, SONG Zhengfang. 2001: REMOTE SENSING OF THE SEASONAL VARIATION IN COLUMN ABUNDANCE OF ATMOSPHERIC CH4*. Journal of Meteorological Research, 15(2): 249-256.
DownLoad: