Observation of greenhouse gases and their impacts on atmospheric transmittance

Dandan Liu; Yinbo Huang II; Yusong Sun III; Zhensong Cao IV; Xingji Lu V

doi:10.1117/12.2533907

17 May 2019 Observation of greenhouse gases and their impacts on atmospheric transmittance

Dandan Liu, Yinbo Huang II, Yusong Sun III, Zhensong Cao IV, Xingji Lu V

Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 111703D (2019) https://doi.org/10.1117/12.2533907
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China

Abstract

A ground-based Fourier transform spectrometer has been established in Hefei, China to remotely measure H₂O, CO₂, CH₄ and CO based on near-infrared solar spectra. The continuously retrieved time series of total column results for H2O, CO2, CH4 and CO are presented on April 2nd, 2018. The observation results show the variation of total column of CO², CH₄ and CO. The total columns of H₂O, CO₂, CH₄ and CO are 1.35×10 ²³, 8.91×10¹¹, 4.08×10 ¹⁹ and 4.09×10 ¹⁸ molecules/cm², respectively. In order to reduce the systematic error of the instrument, we also calculate the column-averaged dry air mole fraction by the oxygen molecule as the internal standard. The column-averaged dry air mole fraction of H₂O, CO₂, CH₄ and CO are 5289.43, 415.04, 1.907 and 0.178ppm, respectively. Furthermore, we analyze the atmospheric transmittance by using MODTRAN 5.0 based on the retrieved results. The comparison results show that the atmospheric transmittance has gaps in the absorption band

Citation Download Citation

Dandan Liu, Yinbo Huang II, Yusong Sun III, Zhensong Cao IV, and Xingji Lu V "Observation of greenhouse gases and their impacts on atmospheric transmittance", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111703D (17 May 2019); https://doi.org/10.1117/12.2533907

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