Compact measurement system for the simultaneous determination of NO, NO2, NOy, and O3 using a small aircraft

James G. Walega; James E. Dye; Frank E. Grahek; Brian K. Ridley

doi:10.1117/12.46167

1 May 1991 Compact measurement system for the simultaneous determination of NO, NO₂, NOy, and O₃ using a small aircraft

James G. Walega, James E. Dye, Frank E. Grahek, Brian K. Ridley

Proceedings Volume 1433, Measurement of Atmospheric Gases; (1991) https://doi.org/10.1117/12.46167
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

A high performance measurement system based upon NO/O3 chemiluminescence has been developed for simultaneous measurements of the title species using smaller aircraft such as the NCAR Sabreliner. NO is determined directly, NO2 is converted to NO by broad-band photolysis, NO(y) is converted to NO using gold-catalyzed reduction in the presence of CO, and O3 is determined using excess NO as the reagent. The system is capable of measurements of the odd nitrogen species at levels below 10 pptv. A description of the instrument and its application to some flights within a thunderstorm are presented.

Citation Download Citation

James G. Walega, James E. Dye, Frank E. Grahek, and Brian K. Ridley "Compact measurement system for the simultaneous determination of NO, NO₂, NOy, and O₃ using a small aircraft", Proc. SPIE 1433, Measurement of Atmospheric Gases, (1 May 1991); https://doi.org/10.1117/12.46167

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