FTIR remote sensing of atmospheric species: application to global change and air pollution

Gabriel J. Vazquez

doi:10.1117/12.210824

31 May 1995 FTIR remote sensing of atmospheric species: application to global change and air pollution

Gabriel J. Vazquez

Proceedings Volume 2365, Optical Sensing for Environmental and Process Monitoring; (1995) https://doi.org/10.1117/12.210824
Event: Optical Sensing for Environmental and Process Monitoring, 1994, McLean, VA, United States

Abstract

In this contribution I describe two applications of Fourier transform infrared spectroscopy to the monitoring of atmospheric compounds. First, I present an overview of IR solar absorption spectroscopy of the atmosphere: a bit of history, environmental relevance, and its use as a tool to determine the composition of the atmosphere. I then report FTIR solar spectroscopy measurements carried out at ground level at National Center for Atmospheric Reserach and on airplanes employing a spectrometer of 0.06 cm^-1 resolution. Sample atmospheric spectra and fitting examples are presented for key species relevant to stratospheric chemistry and global change: ozone (O₃) a chlorofluorocarbon (CF₂Cl₂), a greenhouse gas (N₂O), HCl, NO and HNO₃. Second, I briefly describe urban air pollution measurements at an intersection with heavy traffic in Tucson, Arizona. Two FTIR spectrometers of 1 cm^-1 resolution were employed to carry out long-path open-path measurements of the CO/CO₂ ratio and SF₆. Two FEAT and two LPUV instruments were employed for ancillary measurements of CO, CO₂, NO, CO/CO₂ ratios obtained by FEAT exhaust emission and FTIR ambient air measurements are reported. The two-week campaign was supported by the US DOT and EPA.

Citation Download Citation

Gabriel J. Vazquez "FTIR remote sensing of atmospheric species: application to global change and air pollution", Proc. SPIE 2365, Optical Sensing for Environmental and Process Monitoring, (31 May 1995); https://doi.org/10.1117/12.210824

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