Laser fast-scanning multipath absorption: an ultrasensitive technique for monitoring tropospheric trace gases

W. Armerding; A. Herbert; M. Spiekermann; J. Walter; Franz Josef Comes

doi:10.1117/12.140214

12 February 1993 Laser fast scanning multi-path absorption, an ultrasensitive technique for monitoring tropospheric trace gases

W. Armerding, A. Herbert, M. Spiekermann, J. Walter, Franz Josef Comes

Author Affiliations +

Proceedings Volume 1715, Optical Methods in Atmospheric Chemistry; (1993) https://doi.org/10.1117/12.140214
Event: Environmental Sensing '92, 1992, Berlin, Germany

Abstract

An absorption method for the monitoring of tropospheric trace gases is presented which is based on the fast scanning of a laser system. The 1 km absorption path is folded by a 6m White cell with an open path set up. In situ measurements of tropospheric OH have been carried out under different environmental conditions. Due to the small dimensions of the volume under study a controlled variation of the photon flux density can be realized. This 'open air laboratory' allows kinetic measurements of tropospheric photochemistry under field conditions.

Citation Download Citation

W. Armerding, A. Herbert, M. Spiekermann, J. Walter, and Franz Josef Comes "Laser fast scanning multi-path absorption, an ultrasensitive technique for monitoring tropospheric trace gases", Proc. SPIE 1715, Optical Methods in Atmospheric Chemistry, (12 February 1993); https://doi.org/10.1117/12.140214

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