کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5428844 | 1508691 | 2013 | 7 صفحه PDF | دانلود رایگان |
- Line intensities of eight CO2 bands in the 1.13, 1.06 and 0.87 µm regions are measured.
- Disagreement between measured line intensities and those from the databases is found.
- Global modeling of the line intensities in the studied regions is performed.
Absorption spectra of carbon dioxide, 12C16O2, have been studied in the three wavenumber ranges (8790-8860, 9340-9650 and 11,430-11,505Â cmâ1) of the near infrared region using spectrophotometric complex of V.E. Zuev Institute of Atmospheric Optics based on an Bruker IFS 125 HR and a 30Â m multipass cell with the White type optical system. The spectra were recorded at spectral resolution of 0.015Â cmâ1, path length of 613.82Â m and at pressure range from 209 to 400Â mbar. The multispectrum fittings with the Voigt profile were performed to retrieve the line positions and intensities of eight bands 5001râ00001 (r=3, 4), 2003râ00001 (r=1,2,3) 2113râ01101 (r=1,2) and 00051â00001. The uncertainty of the line position determination is estimated to be about 0.001Â cmâ1. The absolute accuracy of the line intensity measurement is 5% for 5001râ00001 (r=3,4) bands, 3% for 2003râ00001 (r=1,2,3) bands, 10% for 00051â00001 band and 15% for 2113râ01101 (r=1,2) bands. The measured line intensities were used to fit the effective dipole moment parameters of 12C16O2. The fitted parameters reproduce the measured line intensities within their experimental uncertainties. A comparison of measured positions and intensities with those contained in HITRAN, CDSD, AMES-296, and High-T databases is presented and discussed.
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 124, July 2013, Pages 21-27