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Proceedings Paper

Remote sensing the column abundance of atmospheric CH4 from ground-based IR solar spectrum
Author(s): Heli Wei; Ruizhong Rao; Zhengfang Song
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Paper 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%.

Paper Details

Date Published: 15 July 1993
PDF: 5 pages
Proc. SPIE 1874, Infrared and Millimeter-Wave Engineering, (15 July 1993); doi: 10.1117/12.148062
Show Author Affiliations
Heli Wei, Anhui Institute of Optics and Fine Mechanics (China)
Ruizhong Rao, Anhui Institute of Optics and Fine Mechanics (China)
Zhengfang Song, Anhui Institute of Optics and Fine Mechanics (China)

Published in SPIE Proceedings Vol. 1874:
Infrared and Millimeter-Wave Engineering
Harold T. Buscher, Editor(s)

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