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Proceedings Paper

FTIR remote sensing of atmospheric species: application to global change and air pollution
Author(s): Gabriel J. Vazquez
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Paper 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.

Paper Details

Date Published: 31 May 1995
PDF: 26 pages
Proc. SPIE 2365, Optical Sensing for Environmental and Process Monitoring, (31 May 1995); doi: 10.1117/12.210824
Show Author Affiliations
Gabriel J. Vazquez, National Ctr. for Atmospheric Research and Instituto de Fisica (Mexico)

Published in SPIE Proceedings Vol. 2365:
Optical Sensing for Environmental and Process Monitoring
Orman A. Simpson, Editor(s)

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