Remote sensing the column abundance of atmospheric CH4 from ground-based IR solar spectrum

Heli Wei; Ruizhong Rao; Zhengfang Song

doi:10.1117/12.148062

15 July 1993 Remote sensing the column abundance of atmospheric CH₄ from ground-based IR solar spectrum

Heli Wei, Ruizhong Rao, Zhengfang Song

Proceedings Volume 1874, Infrared and Millimeter-Wave Engineering; (1993) https://doi.org/10.1117/12.148062
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

An IR solar spectrometer (ISS), which basically consists of three components: coelstat, spectrometer and data acquiring unit, was developed. With ISS we measured the solar spectra in the wavelength range of 2915 - 2920 cm^-1 on the ground to derive the abundance of atmospheric CH₄. In this spectrum range, CH₄ is the main absorption gas and other gases' absorption can be omitted. The measurement results in the winter of 1991 show that the mixing ratio of CH₄ is around 1.6 ppm, with the mean measurement error about 10%.

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Heli Wei, Ruizhong Rao, and Zhengfang Song "Remote sensing the column abundance of atmospheric CH₄ from ground-based IR solar spectrum", Proc. SPIE 1874, Infrared and Millimeter-Wave Engineering, (15 July 1993); https://doi.org/10.1117/12.148062

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